Commit | Line | Data |
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7921925c | 1 | /* Primitive operations on Lisp data types for GNU Emacs Lisp interpreter. |
0220c518 | 2 | Copyright (C) 1985, 86, 88, 93, 94, 95 Free Software Foundation, Inc. |
7921925c JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7c938215 | 8 | the Free Software Foundation; either version 2, or (at your option) |
7921925c JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
7921925c JB |
20 | |
21 | ||
22 | #include <signal.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
523e9291 RS |
25 | |
26 | /* Put this before lisp.h so that lisp.h can define DBL_DIG if not defined. */ | |
27 | #ifdef LISP_FLOAT_TYPE | |
28 | #ifdef STDC_HEADERS | |
29 | #include <float.h> | |
30 | #endif | |
31 | #endif | |
32 | ||
7921925c | 33 | #include "lisp.h" |
29eab336 | 34 | #include "puresize.h" |
8313c4e7 | 35 | #include "charset.h" |
7921925c JB |
36 | |
37 | #ifndef standalone | |
38 | #include "buffer.h" | |
077d751f | 39 | #include "keyboard.h" |
7921925c JB |
40 | #endif |
41 | ||
a44804c2 | 42 | #include "syssignal.h" |
fb8e9847 | 43 | |
7921925c | 44 | #ifdef LISP_FLOAT_TYPE |
defa77b5 | 45 | |
93b91208 JB |
46 | #ifdef STDC_HEADERS |
47 | #include <stdlib.h> | |
48 | #endif | |
defa77b5 | 49 | |
ad8d56b9 PE |
50 | /* If IEEE_FLOATING_POINT isn't defined, default it from FLT_*. */ |
51 | #ifndef IEEE_FLOATING_POINT | |
52 | #if (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \ | |
53 | && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128) | |
54 | #define IEEE_FLOATING_POINT 1 | |
55 | #else | |
56 | #define IEEE_FLOATING_POINT 0 | |
57 | #endif | |
58 | #endif | |
59 | ||
defa77b5 RS |
60 | /* Work around a problem that happens because math.h on hpux 7 |
61 | defines two static variables--which, in Emacs, are not really static, | |
62 | because `static' is defined as nothing. The problem is that they are | |
63 | here, in floatfns.c, and in lread.c. | |
64 | These macros prevent the name conflict. */ | |
65 | #if defined (HPUX) && !defined (HPUX8) | |
66 | #define _MAXLDBL data_c_maxldbl | |
67 | #define _NMAXLDBL data_c_nmaxldbl | |
68 | #endif | |
69 | ||
7921925c JB |
70 | #include <math.h> |
71 | #endif /* LISP_FLOAT_TYPE */ | |
72 | ||
024ec58f BF |
73 | #if !defined (atof) |
74 | extern double atof (); | |
75 | #endif /* !atof */ | |
76 | ||
7921925c JB |
77 | Lisp_Object Qnil, Qt, Qquote, Qlambda, Qsubr, Qunbound; |
78 | Lisp_Object Qerror_conditions, Qerror_message, Qtop_level; | |
79 | Lisp_Object Qerror, Qquit, Qwrong_type_argument, Qargs_out_of_range; | |
ffd56f97 | 80 | Lisp_Object Qvoid_variable, Qvoid_function, Qcyclic_function_indirection; |
7921925c JB |
81 | Lisp_Object Qsetting_constant, Qinvalid_read_syntax; |
82 | Lisp_Object Qinvalid_function, Qwrong_number_of_arguments, Qno_catch; | |
3b8819d6 | 83 | Lisp_Object Qend_of_file, Qarith_error, Qmark_inactive; |
7921925c | 84 | Lisp_Object Qbeginning_of_buffer, Qend_of_buffer, Qbuffer_read_only; |
8e86942b | 85 | Lisp_Object Qintegerp, Qnatnump, Qwholenump, Qsymbolp, Qlistp, Qconsp; |
7921925c JB |
86 | Lisp_Object Qstringp, Qarrayp, Qsequencep, Qbufferp; |
87 | Lisp_Object Qchar_or_string_p, Qmarkerp, Qinteger_or_marker_p, Qvectorp; | |
07bd8472 | 88 | Lisp_Object Qbuffer_or_string_p; |
7921925c | 89 | Lisp_Object Qboundp, Qfboundp; |
7f0edce7 | 90 | Lisp_Object Qchar_table_p, Qvector_or_char_table_p; |
39bcc759 | 91 | |
7921925c | 92 | Lisp_Object Qcdr; |
ab297811 | 93 | Lisp_Object Qad_advice_info, Qad_activate; |
7921925c | 94 | |
6315e761 RS |
95 | Lisp_Object Qrange_error, Qdomain_error, Qsingularity_error; |
96 | Lisp_Object Qoverflow_error, Qunderflow_error; | |
97 | ||
7921925c | 98 | #ifdef LISP_FLOAT_TYPE |
464f8898 | 99 | Lisp_Object Qfloatp; |
7921925c JB |
100 | Lisp_Object Qnumberp, Qnumber_or_marker_p; |
101 | #endif | |
102 | ||
39bcc759 | 103 | static Lisp_Object Qinteger, Qsymbol, Qstring, Qcons, Qmarker, Qoverlay; |
8313c4e7 KH |
104 | static Lisp_Object Qfloat, Qwindow_configuration, Qwindow; |
105 | Lisp_Object Qprocess; | |
39bcc759 | 106 | static Lisp_Object Qcompiled_function, Qbuffer, Qframe, Qvector; |
fc67d5be | 107 | static Lisp_Object Qchar_table, Qbool_vector; |
39bcc759 | 108 | |
7921925c JB |
109 | static Lisp_Object swap_in_symval_forwarding (); |
110 | ||
d02eeab3 KH |
111 | Lisp_Object set_internal (); |
112 | ||
7921925c JB |
113 | Lisp_Object |
114 | wrong_type_argument (predicate, value) | |
115 | register Lisp_Object predicate, value; | |
116 | { | |
117 | register Lisp_Object tem; | |
118 | do | |
119 | { | |
120 | if (!EQ (Vmocklisp_arguments, Qt)) | |
121 | { | |
e9ebc175 | 122 | if (STRINGP (value) && |
7921925c | 123 | (EQ (predicate, Qintegerp) || EQ (predicate, Qinteger_or_marker_p))) |
3883fbeb | 124 | return Fstring_to_number (value, Qnil); |
e9ebc175 | 125 | if (INTEGERP (value) && EQ (predicate, Qstringp)) |
f2980264 | 126 | return Fnumber_to_string (value); |
7921925c | 127 | } |
e1351ff7 RS |
128 | |
129 | /* If VALUE is not even a valid Lisp object, abort here | |
130 | where we can get a backtrace showing where it came from. */ | |
04be3993 | 131 | if ((unsigned int) XGCTYPE (value) >= Lisp_Type_Limit) |
e1351ff7 RS |
132 | abort (); |
133 | ||
7921925c JB |
134 | value = Fsignal (Qwrong_type_argument, Fcons (predicate, Fcons (value, Qnil))); |
135 | tem = call1 (predicate, value); | |
136 | } | |
a33ef3ab | 137 | while (NILP (tem)); |
7921925c JB |
138 | return value; |
139 | } | |
140 | ||
141 | pure_write_error () | |
142 | { | |
143 | error ("Attempt to modify read-only object"); | |
144 | } | |
145 | ||
146 | void | |
147 | args_out_of_range (a1, a2) | |
148 | Lisp_Object a1, a2; | |
149 | { | |
150 | while (1) | |
151 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Qnil))); | |
152 | } | |
153 | ||
154 | void | |
155 | args_out_of_range_3 (a1, a2, a3) | |
156 | Lisp_Object a1, a2, a3; | |
157 | { | |
158 | while (1) | |
159 | Fsignal (Qargs_out_of_range, Fcons (a1, Fcons (a2, Fcons (a3, Qnil)))); | |
160 | } | |
161 | ||
7921925c JB |
162 | /* On some machines, XINT needs a temporary location. |
163 | Here it is, in case it is needed. */ | |
164 | ||
165 | int sign_extend_temp; | |
166 | ||
167 | /* On a few machines, XINT can only be done by calling this. */ | |
168 | ||
169 | int | |
170 | sign_extend_lisp_int (num) | |
a0ed95ea | 171 | EMACS_INT num; |
7921925c | 172 | { |
a0ed95ea RS |
173 | if (num & (((EMACS_INT) 1) << (VALBITS - 1))) |
174 | return num | (((EMACS_INT) (-1)) << VALBITS); | |
7921925c | 175 | else |
a0ed95ea | 176 | return num & ((((EMACS_INT) 1) << VALBITS) - 1); |
7921925c JB |
177 | } |
178 | \f | |
179 | /* Data type predicates */ | |
180 | ||
181 | DEFUN ("eq", Feq, Seq, 2, 2, 0, | |
c2124165 | 182 | "Return t if the two args are the same Lisp object.") |
7921925c JB |
183 | (obj1, obj2) |
184 | Lisp_Object obj1, obj2; | |
185 | { | |
186 | if (EQ (obj1, obj2)) | |
187 | return Qt; | |
188 | return Qnil; | |
189 | } | |
190 | ||
c2124165 | 191 | DEFUN ("null", Fnull, Snull, 1, 1, 0, "Return t if OBJECT is nil.") |
39bcc759 RS |
192 | (object) |
193 | Lisp_Object object; | |
7921925c | 194 | { |
39bcc759 | 195 | if (NILP (object)) |
7921925c JB |
196 | return Qt; |
197 | return Qnil; | |
198 | } | |
199 | ||
39bcc759 RS |
200 | DEFUN ("type-of", Ftype_of, Stype_of, 1, 1, 0, |
201 | "Return a symbol representing the type of OBJECT.\n\ | |
202 | The symbol returned names the object's basic type;\n\ | |
203 | for example, (type-of 1) returns `integer'.") | |
204 | (object) | |
205 | Lisp_Object object; | |
206 | { | |
207 | switch (XGCTYPE (object)) | |
208 | { | |
209 | case Lisp_Int: | |
210 | return Qinteger; | |
211 | ||
212 | case Lisp_Symbol: | |
213 | return Qsymbol; | |
214 | ||
215 | case Lisp_String: | |
216 | return Qstring; | |
217 | ||
218 | case Lisp_Cons: | |
219 | return Qcons; | |
220 | ||
221 | case Lisp_Misc: | |
324a6eef | 222 | switch (XMISCTYPE (object)) |
39bcc759 RS |
223 | { |
224 | case Lisp_Misc_Marker: | |
225 | return Qmarker; | |
226 | case Lisp_Misc_Overlay: | |
227 | return Qoverlay; | |
228 | case Lisp_Misc_Float: | |
229 | return Qfloat; | |
230 | } | |
231 | abort (); | |
232 | ||
233 | case Lisp_Vectorlike: | |
234 | if (GC_WINDOW_CONFIGURATIONP (object)) | |
235 | return Qwindow_configuration; | |
236 | if (GC_PROCESSP (object)) | |
237 | return Qprocess; | |
238 | if (GC_WINDOWP (object)) | |
239 | return Qwindow; | |
240 | if (GC_SUBRP (object)) | |
241 | return Qsubr; | |
242 | if (GC_COMPILEDP (object)) | |
243 | return Qcompiled_function; | |
244 | if (GC_BUFFERP (object)) | |
245 | return Qbuffer; | |
fc67d5be KH |
246 | if (GC_CHAR_TABLE_P (object)) |
247 | return Qchar_table; | |
248 | if (GC_BOOL_VECTOR_P (object)) | |
249 | return Qbool_vector; | |
39bcc759 RS |
250 | if (GC_FRAMEP (object)) |
251 | return Qframe; | |
39bcc759 RS |
252 | return Qvector; |
253 | ||
254 | #ifdef LISP_FLOAT_TYPE | |
255 | case Lisp_Float: | |
256 | return Qfloat; | |
257 | #endif | |
258 | ||
259 | default: | |
260 | abort (); | |
261 | } | |
262 | } | |
263 | ||
c2124165 | 264 | DEFUN ("consp", Fconsp, Sconsp, 1, 1, 0, "Return t if OBJECT is a cons cell.") |
39bcc759 RS |
265 | (object) |
266 | Lisp_Object object; | |
7921925c | 267 | { |
39bcc759 | 268 | if (CONSP (object)) |
7921925c JB |
269 | return Qt; |
270 | return Qnil; | |
271 | } | |
272 | ||
c2124165 | 273 | DEFUN ("atom", Fatom, Satom, 1, 1, 0, "Return t if OBJECT is not a cons cell. This includes nil.") |
39bcc759 RS |
274 | (object) |
275 | Lisp_Object object; | |
7921925c | 276 | { |
39bcc759 | 277 | if (CONSP (object)) |
7921925c JB |
278 | return Qnil; |
279 | return Qt; | |
280 | } | |
281 | ||
c2124165 | 282 | DEFUN ("listp", Flistp, Slistp, 1, 1, 0, "Return t if OBJECT is a list. This includes nil.") |
39bcc759 RS |
283 | (object) |
284 | Lisp_Object object; | |
7921925c | 285 | { |
39bcc759 | 286 | if (CONSP (object) || NILP (object)) |
7921925c JB |
287 | return Qt; |
288 | return Qnil; | |
289 | } | |
290 | ||
c2124165 | 291 | DEFUN ("nlistp", Fnlistp, Snlistp, 1, 1, 0, "Return t if OBJECT is not a list. Lists include nil.") |
39bcc759 RS |
292 | (object) |
293 | Lisp_Object object; | |
7921925c | 294 | { |
39bcc759 | 295 | if (CONSP (object) || NILP (object)) |
7921925c JB |
296 | return Qnil; |
297 | return Qt; | |
298 | } | |
299 | \f | |
c2124165 | 300 | DEFUN ("symbolp", Fsymbolp, Ssymbolp, 1, 1, 0, "Return t if OBJECT is a symbol.") |
39bcc759 RS |
301 | (object) |
302 | Lisp_Object object; | |
7921925c | 303 | { |
39bcc759 | 304 | if (SYMBOLP (object)) |
7921925c JB |
305 | return Qt; |
306 | return Qnil; | |
307 | } | |
308 | ||
c2124165 | 309 | DEFUN ("vectorp", Fvectorp, Svectorp, 1, 1, 0, "Return t if OBJECT is a vector.") |
39bcc759 RS |
310 | (object) |
311 | Lisp_Object object; | |
7921925c | 312 | { |
39bcc759 | 313 | if (VECTORP (object)) |
7921925c JB |
314 | return Qt; |
315 | return Qnil; | |
316 | } | |
317 | ||
c2124165 | 318 | DEFUN ("stringp", Fstringp, Sstringp, 1, 1, 0, "Return t if OBJECT is a string.") |
39bcc759 RS |
319 | (object) |
320 | Lisp_Object object; | |
7921925c | 321 | { |
39bcc759 | 322 | if (STRINGP (object)) |
7921925c JB |
323 | return Qt; |
324 | return Qnil; | |
325 | } | |
326 | ||
c2124165 | 327 | DEFUN ("char-table-p", Fchar_table_p, Schar_table_p, 1, 1, 0, "Return t if OBJECT is a char-table.") |
4d276982 RS |
328 | (object) |
329 | Lisp_Object object; | |
330 | { | |
331 | if (CHAR_TABLE_P (object)) | |
332 | return Qt; | |
333 | return Qnil; | |
334 | } | |
335 | ||
7f0edce7 RS |
336 | DEFUN ("vector-or-char-table-p", Fvector_or_char_table_p, |
337 | Svector_or_char_table_p, 1, 1, 0, | |
c2124165 | 338 | "Return t if OBJECT is a char-table or vector.") |
7f0edce7 RS |
339 | (object) |
340 | Lisp_Object object; | |
341 | { | |
342 | if (VECTORP (object) || CHAR_TABLE_P (object)) | |
343 | return Qt; | |
344 | return Qnil; | |
345 | } | |
346 | ||
c2124165 | 347 | DEFUN ("bool-vector-p", Fbool_vector_p, Sbool_vector_p, 1, 1, 0, "Return t if OBJECT is a bool-vector.") |
4d276982 RS |
348 | (object) |
349 | Lisp_Object object; | |
350 | { | |
351 | if (BOOL_VECTOR_P (object)) | |
352 | return Qt; | |
353 | return Qnil; | |
354 | } | |
355 | ||
c2124165 | 356 | DEFUN ("arrayp", Farrayp, Sarrayp, 1, 1, 0, "Return t if OBJECT is an array (string or vector).") |
39bcc759 RS |
357 | (object) |
358 | Lisp_Object object; | |
7921925c | 359 | { |
a9729926 RS |
360 | if (VECTORP (object) || STRINGP (object) |
361 | || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object)) | |
7921925c JB |
362 | return Qt; |
363 | return Qnil; | |
364 | } | |
365 | ||
366 | DEFUN ("sequencep", Fsequencep, Ssequencep, 1, 1, 0, | |
c2124165 | 367 | "Return t if OBJECT is a sequence (list or array).") |
39bcc759 RS |
368 | (object) |
369 | register Lisp_Object object; | |
7921925c | 370 | { |
4d276982 RS |
371 | if (CONSP (object) || NILP (object) || VECTORP (object) || STRINGP (object) |
372 | || CHAR_TABLE_P (object) || BOOL_VECTOR_P (object)) | |
7921925c JB |
373 | return Qt; |
374 | return Qnil; | |
375 | } | |
376 | ||
c2124165 | 377 | DEFUN ("bufferp", Fbufferp, Sbufferp, 1, 1, 0, "Return t if OBJECT is an editor buffer.") |
39bcc759 RS |
378 | (object) |
379 | Lisp_Object object; | |
7921925c | 380 | { |
39bcc759 | 381 | if (BUFFERP (object)) |
7921925c JB |
382 | return Qt; |
383 | return Qnil; | |
384 | } | |
385 | ||
c2124165 | 386 | DEFUN ("markerp", Fmarkerp, Smarkerp, 1, 1, 0, "Return t if OBJECT is a marker (editor pointer).") |
39bcc759 RS |
387 | (object) |
388 | Lisp_Object object; | |
7921925c | 389 | { |
39bcc759 | 390 | if (MARKERP (object)) |
7921925c JB |
391 | return Qt; |
392 | return Qnil; | |
393 | } | |
394 | ||
c2124165 | 395 | DEFUN ("subrp", Fsubrp, Ssubrp, 1, 1, 0, "Return t if OBJECT is a built-in function.") |
39bcc759 RS |
396 | (object) |
397 | Lisp_Object object; | |
7921925c | 398 | { |
39bcc759 | 399 | if (SUBRP (object)) |
7921925c JB |
400 | return Qt; |
401 | return Qnil; | |
402 | } | |
403 | ||
dbc4e1c1 | 404 | DEFUN ("byte-code-function-p", Fbyte_code_function_p, Sbyte_code_function_p, |
c2124165 | 405 | 1, 1, 0, "Return t if OBJECT is a byte-compiled function object.") |
39bcc759 RS |
406 | (object) |
407 | Lisp_Object object; | |
7921925c | 408 | { |
39bcc759 | 409 | if (COMPILEDP (object)) |
7921925c JB |
410 | return Qt; |
411 | return Qnil; | |
412 | } | |
413 | ||
0321d75c | 414 | DEFUN ("char-or-string-p", Fchar_or_string_p, Schar_or_string_p, 1, 1, 0, |
c2124165 | 415 | "Return t if OBJECT is a character (an integer) or a string.") |
39bcc759 RS |
416 | (object) |
417 | register Lisp_Object object; | |
7921925c | 418 | { |
39bcc759 | 419 | if (INTEGERP (object) || STRINGP (object)) |
7921925c JB |
420 | return Qt; |
421 | return Qnil; | |
422 | } | |
423 | \f | |
c2124165 | 424 | DEFUN ("integerp", Fintegerp, Sintegerp, 1, 1, 0, "Return t if OBJECT is an integer.") |
39bcc759 RS |
425 | (object) |
426 | Lisp_Object object; | |
7921925c | 427 | { |
39bcc759 | 428 | if (INTEGERP (object)) |
7921925c JB |
429 | return Qt; |
430 | return Qnil; | |
431 | } | |
432 | ||
464f8898 | 433 | DEFUN ("integer-or-marker-p", Finteger_or_marker_p, Sinteger_or_marker_p, 1, 1, 0, |
c2124165 | 434 | "Return t if OBJECT is an integer or a marker (editor pointer).") |
39bcc759 RS |
435 | (object) |
436 | register Lisp_Object object; | |
7921925c | 437 | { |
39bcc759 | 438 | if (MARKERP (object) || INTEGERP (object)) |
7921925c JB |
439 | return Qt; |
440 | return Qnil; | |
441 | } | |
442 | ||
0321d75c | 443 | DEFUN ("natnump", Fnatnump, Snatnump, 1, 1, 0, |
c2124165 | 444 | "Return t if OBJECT is a nonnegative integer.") |
39bcc759 RS |
445 | (object) |
446 | Lisp_Object object; | |
7921925c | 447 | { |
39bcc759 | 448 | if (NATNUMP (object)) |
7921925c JB |
449 | return Qt; |
450 | return Qnil; | |
451 | } | |
452 | ||
453 | DEFUN ("numberp", Fnumberp, Snumberp, 1, 1, 0, | |
c2124165 | 454 | "Return t if OBJECT is a number (floating point or integer).") |
39bcc759 RS |
455 | (object) |
456 | Lisp_Object object; | |
7921925c | 457 | { |
39bcc759 | 458 | if (NUMBERP (object)) |
7921925c | 459 | return Qt; |
dbc4e1c1 JB |
460 | else |
461 | return Qnil; | |
7921925c JB |
462 | } |
463 | ||
464 | DEFUN ("number-or-marker-p", Fnumber_or_marker_p, | |
465 | Snumber_or_marker_p, 1, 1, 0, | |
c2124165 | 466 | "Return t if OBJECT is a number or a marker.") |
39bcc759 RS |
467 | (object) |
468 | Lisp_Object object; | |
7921925c | 469 | { |
39bcc759 | 470 | if (NUMBERP (object) || MARKERP (object)) |
7921925c JB |
471 | return Qt; |
472 | return Qnil; | |
473 | } | |
464f8898 RS |
474 | |
475 | #ifdef LISP_FLOAT_TYPE | |
476 | DEFUN ("floatp", Ffloatp, Sfloatp, 1, 1, 0, | |
c2124165 | 477 | "Return t if OBJECT is a floating point number.") |
39bcc759 RS |
478 | (object) |
479 | Lisp_Object object; | |
464f8898 | 480 | { |
39bcc759 | 481 | if (FLOATP (object)) |
464f8898 RS |
482 | return Qt; |
483 | return Qnil; | |
484 | } | |
7921925c JB |
485 | #endif /* LISP_FLOAT_TYPE */ |
486 | \f | |
487 | /* Extract and set components of lists */ | |
488 | ||
489 | DEFUN ("car", Fcar, Scar, 1, 1, 0, | |
e1960a18 | 490 | "Return the car of LIST. If arg is nil, return nil.\n\ |
7921925c JB |
491 | Error if arg is not nil and not a cons cell. See also `car-safe'.") |
492 | (list) | |
493 | register Lisp_Object list; | |
494 | { | |
495 | while (1) | |
496 | { | |
e9ebc175 | 497 | if (CONSP (list)) |
7921925c JB |
498 | return XCONS (list)->car; |
499 | else if (EQ (list, Qnil)) | |
500 | return Qnil; | |
501 | else | |
502 | list = wrong_type_argument (Qlistp, list); | |
503 | } | |
504 | } | |
505 | ||
506 | DEFUN ("car-safe", Fcar_safe, Scar_safe, 1, 1, 0, | |
507 | "Return the car of OBJECT if it is a cons cell, or else nil.") | |
508 | (object) | |
509 | Lisp_Object object; | |
510 | { | |
e9ebc175 | 511 | if (CONSP (object)) |
7921925c JB |
512 | return XCONS (object)->car; |
513 | else | |
514 | return Qnil; | |
515 | } | |
516 | ||
517 | DEFUN ("cdr", Fcdr, Scdr, 1, 1, 0, | |
e1960a18 | 518 | "Return the cdr of LIST. If arg is nil, return nil.\n\ |
7921925c JB |
519 | Error if arg is not nil and not a cons cell. See also `cdr-safe'.") |
520 | ||
521 | (list) | |
522 | register Lisp_Object list; | |
523 | { | |
524 | while (1) | |
525 | { | |
e9ebc175 | 526 | if (CONSP (list)) |
7921925c JB |
527 | return XCONS (list)->cdr; |
528 | else if (EQ (list, Qnil)) | |
529 | return Qnil; | |
530 | else | |
531 | list = wrong_type_argument (Qlistp, list); | |
532 | } | |
533 | } | |
534 | ||
535 | DEFUN ("cdr-safe", Fcdr_safe, Scdr_safe, 1, 1, 0, | |
b7abc8fa | 536 | "Return the cdr of OBJECT if it is a cons cell, or else nil.") |
7921925c JB |
537 | (object) |
538 | Lisp_Object object; | |
539 | { | |
e9ebc175 | 540 | if (CONSP (object)) |
7921925c JB |
541 | return XCONS (object)->cdr; |
542 | else | |
543 | return Qnil; | |
544 | } | |
545 | ||
546 | DEFUN ("setcar", Fsetcar, Ssetcar, 2, 2, 0, | |
e1960a18 | 547 | "Set the car of CELL to be NEWCAR. Returns NEWCAR.") |
7921925c JB |
548 | (cell, newcar) |
549 | register Lisp_Object cell, newcar; | |
550 | { | |
e9ebc175 | 551 | if (!CONSP (cell)) |
7921925c JB |
552 | cell = wrong_type_argument (Qconsp, cell); |
553 | ||
554 | CHECK_IMPURE (cell); | |
555 | XCONS (cell)->car = newcar; | |
556 | return newcar; | |
557 | } | |
558 | ||
559 | DEFUN ("setcdr", Fsetcdr, Ssetcdr, 2, 2, 0, | |
e1960a18 | 560 | "Set the cdr of CELL to be NEWCDR. Returns NEWCDR.") |
7921925c JB |
561 | (cell, newcdr) |
562 | register Lisp_Object cell, newcdr; | |
563 | { | |
e9ebc175 | 564 | if (!CONSP (cell)) |
7921925c JB |
565 | cell = wrong_type_argument (Qconsp, cell); |
566 | ||
567 | CHECK_IMPURE (cell); | |
568 | XCONS (cell)->cdr = newcdr; | |
569 | return newcdr; | |
570 | } | |
571 | \f | |
572 | /* Extract and set components of symbols */ | |
573 | ||
c2124165 | 574 | DEFUN ("boundp", Fboundp, Sboundp, 1, 1, 0, "Return t if SYMBOL's value is not void.") |
d9c2a0f2 EN |
575 | (symbol) |
576 | register Lisp_Object symbol; | |
7921925c JB |
577 | { |
578 | Lisp_Object valcontents; | |
d9c2a0f2 | 579 | CHECK_SYMBOL (symbol, 0); |
7921925c | 580 | |
d9c2a0f2 | 581 | valcontents = XSYMBOL (symbol)->value; |
7921925c | 582 | |
aabf6bec KH |
583 | if (BUFFER_LOCAL_VALUEP (valcontents) |
584 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 585 | valcontents = swap_in_symval_forwarding (symbol, valcontents); |
7921925c | 586 | |
1bfcade3 | 587 | return (EQ (valcontents, Qunbound) ? Qnil : Qt); |
7921925c JB |
588 | } |
589 | ||
c2124165 | 590 | DEFUN ("fboundp", Ffboundp, Sfboundp, 1, 1, 0, "Return t if SYMBOL's function definition is not void.") |
d9c2a0f2 EN |
591 | (symbol) |
592 | register Lisp_Object symbol; | |
7921925c | 593 | { |
d9c2a0f2 EN |
594 | CHECK_SYMBOL (symbol, 0); |
595 | return (EQ (XSYMBOL (symbol)->function, Qunbound) ? Qnil : Qt); | |
7921925c JB |
596 | } |
597 | ||
598 | DEFUN ("makunbound", Fmakunbound, Smakunbound, 1, 1, 0, "Make SYMBOL's value be void.") | |
d9c2a0f2 EN |
599 | (symbol) |
600 | register Lisp_Object symbol; | |
7921925c | 601 | { |
d9c2a0f2 EN |
602 | CHECK_SYMBOL (symbol, 0); |
603 | if (NILP (symbol) || EQ (symbol, Qt)) | |
604 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
605 | Fset (symbol, Qunbound); | |
606 | return symbol; | |
7921925c JB |
607 | } |
608 | ||
609 | DEFUN ("fmakunbound", Ffmakunbound, Sfmakunbound, 1, 1, 0, "Make SYMBOL's function definition be void.") | |
d9c2a0f2 EN |
610 | (symbol) |
611 | register Lisp_Object symbol; | |
7921925c | 612 | { |
d9c2a0f2 EN |
613 | CHECK_SYMBOL (symbol, 0); |
614 | if (NILP (symbol) || EQ (symbol, Qt)) | |
615 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
616 | XSYMBOL (symbol)->function = Qunbound; | |
617 | return symbol; | |
7921925c JB |
618 | } |
619 | ||
620 | DEFUN ("symbol-function", Fsymbol_function, Ssymbol_function, 1, 1, 0, | |
621 | "Return SYMBOL's function definition. Error if that is void.") | |
ffd56f97 JB |
622 | (symbol) |
623 | register Lisp_Object symbol; | |
7921925c | 624 | { |
ffd56f97 JB |
625 | CHECK_SYMBOL (symbol, 0); |
626 | if (EQ (XSYMBOL (symbol)->function, Qunbound)) | |
627 | return Fsignal (Qvoid_function, Fcons (symbol, Qnil)); | |
628 | return XSYMBOL (symbol)->function; | |
7921925c JB |
629 | } |
630 | ||
631 | DEFUN ("symbol-plist", Fsymbol_plist, Ssymbol_plist, 1, 1, 0, "Return SYMBOL's property list.") | |
d9c2a0f2 EN |
632 | (symbol) |
633 | register Lisp_Object symbol; | |
7921925c | 634 | { |
d9c2a0f2 EN |
635 | CHECK_SYMBOL (symbol, 0); |
636 | return XSYMBOL (symbol)->plist; | |
7921925c JB |
637 | } |
638 | ||
639 | DEFUN ("symbol-name", Fsymbol_name, Ssymbol_name, 1, 1, 0, "Return SYMBOL's name, a string.") | |
d9c2a0f2 EN |
640 | (symbol) |
641 | register Lisp_Object symbol; | |
7921925c JB |
642 | { |
643 | register Lisp_Object name; | |
644 | ||
d9c2a0f2 EN |
645 | CHECK_SYMBOL (symbol, 0); |
646 | XSETSTRING (name, XSYMBOL (symbol)->name); | |
7921925c JB |
647 | return name; |
648 | } | |
649 | ||
650 | DEFUN ("fset", Ffset, Sfset, 2, 2, 0, | |
8c0b5540 RS |
651 | "Set SYMBOL's function definition to DEFINITION, and return DEFINITION.") |
652 | (symbol, definition) | |
653 | register Lisp_Object symbol, definition; | |
d9c2a0f2 EN |
654 | { |
655 | CHECK_SYMBOL (symbol, 0); | |
656 | if (NILP (symbol) || EQ (symbol, Qt)) | |
657 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
658 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (symbol)->function, Qunbound)) | |
659 | Vautoload_queue = Fcons (Fcons (symbol, XSYMBOL (symbol)->function), | |
7921925c | 660 | Vautoload_queue); |
8c0b5540 | 661 | XSYMBOL (symbol)->function = definition; |
f845f2c9 | 662 | /* Handle automatic advice activation */ |
d9c2a0f2 | 663 | if (CONSP (XSYMBOL (symbol)->plist) && !NILP (Fget (symbol, Qad_advice_info))) |
f845f2c9 | 664 | { |
d9c2a0f2 | 665 | call2 (Qad_activate, symbol, Qnil); |
8c0b5540 | 666 | definition = XSYMBOL (symbol)->function; |
f845f2c9 | 667 | } |
8c0b5540 | 668 | return definition; |
7921925c JB |
669 | } |
670 | ||
80df38a2 | 671 | DEFUN ("defalias", Fdefalias, Sdefalias, 2, 2, 0, |
73e0d965 | 672 | "Set SYMBOL's function definition to DEFINITION, and return DEFINITION.\n\ |
fc08c367 | 673 | Associates the function with the current load file, if any.") |
73e0d965 RS |
674 | (symbol, definition) |
675 | register Lisp_Object symbol, definition; | |
fc08c367 | 676 | { |
d9c2a0f2 EN |
677 | CHECK_SYMBOL (symbol, 0); |
678 | if (!NILP (Vautoload_queue) && !EQ (XSYMBOL (symbol)->function, Qunbound)) | |
679 | Vautoload_queue = Fcons (Fcons (symbol, XSYMBOL (symbol)->function), | |
fc08c367 | 680 | Vautoload_queue); |
73e0d965 | 681 | XSYMBOL (symbol)->function = definition; |
ab297811 | 682 | /* Handle automatic advice activation */ |
d9c2a0f2 | 683 | if (CONSP (XSYMBOL (symbol)->plist) && !NILP (Fget (symbol, Qad_advice_info))) |
ab297811 | 684 | { |
d9c2a0f2 | 685 | call2 (Qad_activate, symbol, Qnil); |
73e0d965 | 686 | definition = XSYMBOL (symbol)->function; |
ab297811 | 687 | } |
d9c2a0f2 | 688 | LOADHIST_ATTACH (symbol); |
73e0d965 | 689 | return definition; |
fc08c367 RS |
690 | } |
691 | ||
7921925c JB |
692 | DEFUN ("setplist", Fsetplist, Ssetplist, 2, 2, 0, |
693 | "Set SYMBOL's property list to NEWVAL, and return NEWVAL.") | |
d9c2a0f2 EN |
694 | (symbol, newplist) |
695 | register Lisp_Object symbol, newplist; | |
7921925c | 696 | { |
d9c2a0f2 EN |
697 | CHECK_SYMBOL (symbol, 0); |
698 | XSYMBOL (symbol)->plist = newplist; | |
7921925c JB |
699 | return newplist; |
700 | } | |
ffd56f97 | 701 | |
7921925c JB |
702 | \f |
703 | /* Getting and setting values of symbols */ | |
704 | ||
705 | /* Given the raw contents of a symbol value cell, | |
706 | return the Lisp value of the symbol. | |
707 | This does not handle buffer-local variables; use | |
708 | swap_in_symval_forwarding for that. */ | |
709 | ||
710 | Lisp_Object | |
711 | do_symval_forwarding (valcontents) | |
712 | register Lisp_Object valcontents; | |
713 | { | |
714 | register Lisp_Object val; | |
46b2ac21 KH |
715 | int offset; |
716 | if (MISCP (valcontents)) | |
324a6eef | 717 | switch (XMISCTYPE (valcontents)) |
46b2ac21 KH |
718 | { |
719 | case Lisp_Misc_Intfwd: | |
720 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
721 | return val; | |
7921925c | 722 | |
46b2ac21 KH |
723 | case Lisp_Misc_Boolfwd: |
724 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
7921925c | 725 | |
46b2ac21 KH |
726 | case Lisp_Misc_Objfwd: |
727 | return *XOBJFWD (valcontents)->objvar; | |
7921925c | 728 | |
46b2ac21 KH |
729 | case Lisp_Misc_Buffer_Objfwd: |
730 | offset = XBUFFER_OBJFWD (valcontents)->offset; | |
731 | return *(Lisp_Object *)(offset + (char *)current_buffer); | |
7403b5c8 | 732 | |
e5f8af9e KH |
733 | case Lisp_Misc_Kboard_Objfwd: |
734 | offset = XKBOARD_OBJFWD (valcontents)->offset; | |
735 | return *(Lisp_Object *)(offset + (char *)current_kboard); | |
46b2ac21 | 736 | } |
7921925c JB |
737 | return valcontents; |
738 | } | |
739 | ||
d9c2a0f2 EN |
740 | /* Store NEWVAL into SYMBOL, where VALCONTENTS is found in the value cell |
741 | of SYMBOL. If SYMBOL is buffer-local, VALCONTENTS should be the | |
7921925c JB |
742 | buffer-independent contents of the value cell: forwarded just one |
743 | step past the buffer-localness. */ | |
744 | ||
745 | void | |
d9c2a0f2 EN |
746 | store_symval_forwarding (symbol, valcontents, newval) |
747 | Lisp_Object symbol; | |
7921925c JB |
748 | register Lisp_Object valcontents, newval; |
749 | { | |
0220c518 | 750 | switch (SWITCH_ENUM_CAST (XTYPE (valcontents))) |
7921925c | 751 | { |
46b2ac21 | 752 | case Lisp_Misc: |
324a6eef | 753 | switch (XMISCTYPE (valcontents)) |
46b2ac21 KH |
754 | { |
755 | case Lisp_Misc_Intfwd: | |
756 | CHECK_NUMBER (newval, 1); | |
757 | *XINTFWD (valcontents)->intvar = XINT (newval); | |
e6c82a8d RS |
758 | if (*XINTFWD (valcontents)->intvar != XINT (newval)) |
759 | error ("Value out of range for variable `%s'", | |
d9c2a0f2 | 760 | XSYMBOL (symbol)->name->data); |
46b2ac21 KH |
761 | break; |
762 | ||
763 | case Lisp_Misc_Boolfwd: | |
764 | *XBOOLFWD (valcontents)->boolvar = NILP (newval) ? 0 : 1; | |
765 | break; | |
766 | ||
767 | case Lisp_Misc_Objfwd: | |
768 | *XOBJFWD (valcontents)->objvar = newval; | |
769 | break; | |
770 | ||
771 | case Lisp_Misc_Buffer_Objfwd: | |
772 | { | |
773 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
774 | Lisp_Object type; | |
775 | ||
776 | type = *(Lisp_Object *)(offset + (char *)&buffer_local_types); | |
777 | if (! NILP (type) && ! NILP (newval) | |
778 | && XTYPE (newval) != XINT (type)) | |
779 | buffer_slot_type_mismatch (offset); | |
780 | ||
781 | *(Lisp_Object *)(offset + (char *)current_buffer) = newval; | |
46b2ac21 | 782 | } |
7403b5c8 KH |
783 | break; |
784 | ||
e5f8af9e KH |
785 | case Lisp_Misc_Kboard_Objfwd: |
786 | (*(Lisp_Object *)((char *)current_kboard | |
787 | + XKBOARD_OBJFWD (valcontents)->offset)) | |
7403b5c8 KH |
788 | = newval; |
789 | break; | |
790 | ||
46b2ac21 KH |
791 | default: |
792 | goto def; | |
793 | } | |
7921925c JB |
794 | break; |
795 | ||
7921925c | 796 | default: |
46b2ac21 | 797 | def: |
d9c2a0f2 | 798 | valcontents = XSYMBOL (symbol)->value; |
e9ebc175 KH |
799 | if (BUFFER_LOCAL_VALUEP (valcontents) |
800 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
8d4afcac | 801 | XBUFFER_LOCAL_VALUE (valcontents)->car = newval; |
7921925c | 802 | else |
d9c2a0f2 | 803 | XSYMBOL (symbol)->value = newval; |
7921925c JB |
804 | } |
805 | } | |
806 | ||
d9c2a0f2 | 807 | /* Set up the buffer-local symbol SYMBOL for validity in the current |
7921925c JB |
808 | buffer. VALCONTENTS is the contents of its value cell. |
809 | Return the value forwarded one step past the buffer-local indicator. */ | |
810 | ||
811 | static Lisp_Object | |
d9c2a0f2 EN |
812 | swap_in_symval_forwarding (symbol, valcontents) |
813 | Lisp_Object symbol, valcontents; | |
7921925c | 814 | { |
7403b5c8 | 815 | /* valcontents is a pointer to a struct resembling the cons |
7921925c | 816 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE)). |
7403b5c8 | 817 | |
7921925c | 818 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's |
533984a8 JB |
819 | local_var_alist, that being the element whose car is this |
820 | variable. Or it can be a pointer to the | |
821 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not have | |
822 | an element in its alist for this variable. | |
823 | ||
824 | If the current buffer is not BUFFER, we store the current | |
825 | REALVALUE value into CURRENT-ALIST-ELEMENT, then find the | |
826 | appropriate alist element for the buffer now current and set up | |
827 | CURRENT-ALIST-ELEMENT. Then we set REALVALUE out of that | |
828 | element, and store into BUFFER. | |
829 | ||
7921925c JB |
830 | Note that REALVALUE can be a forwarding pointer. */ |
831 | ||
832 | register Lisp_Object tem1; | |
8d4afcac | 833 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
7921925c | 834 | |
a33ef3ab | 835 | if (NILP (tem1) || current_buffer != XBUFFER (tem1)) |
7921925c | 836 | { |
8d4afcac KH |
837 | tem1 = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
838 | Fsetcdr (tem1, | |
839 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car)); | |
d9c2a0f2 | 840 | tem1 = assq_no_quit (symbol, current_buffer->local_var_alist); |
a33ef3ab | 841 | if (NILP (tem1)) |
8d4afcac KH |
842 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr; |
843 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car = tem1; | |
844 | XSETBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car, | |
845 | current_buffer); | |
d9c2a0f2 | 846 | store_symval_forwarding (symbol, XBUFFER_LOCAL_VALUE (valcontents)->car, |
8d4afcac | 847 | Fcdr (tem1)); |
7921925c | 848 | } |
8d4afcac | 849 | return XBUFFER_LOCAL_VALUE (valcontents)->car; |
7921925c JB |
850 | } |
851 | \f | |
14e76af9 JB |
852 | /* Find the value of a symbol, returning Qunbound if it's not bound. |
853 | This is helpful for code which just wants to get a variable's value | |
8e6208c5 | 854 | if it has one, without signaling an error. |
14e76af9 JB |
855 | Note that it must not be possible to quit |
856 | within this function. Great care is required for this. */ | |
7921925c | 857 | |
14e76af9 | 858 | Lisp_Object |
d9c2a0f2 EN |
859 | find_symbol_value (symbol) |
860 | Lisp_Object symbol; | |
7921925c JB |
861 | { |
862 | register Lisp_Object valcontents, tem1; | |
863 | register Lisp_Object val; | |
d9c2a0f2 EN |
864 | CHECK_SYMBOL (symbol, 0); |
865 | valcontents = XSYMBOL (symbol)->value; | |
7921925c | 866 | |
aabf6bec KH |
867 | if (BUFFER_LOCAL_VALUEP (valcontents) |
868 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 869 | valcontents = swap_in_symval_forwarding (symbol, valcontents); |
7921925c | 870 | |
536b772a KH |
871 | if (MISCP (valcontents)) |
872 | { | |
324a6eef | 873 | switch (XMISCTYPE (valcontents)) |
46b2ac21 KH |
874 | { |
875 | case Lisp_Misc_Intfwd: | |
876 | XSETINT (val, *XINTFWD (valcontents)->intvar); | |
877 | return val; | |
7921925c | 878 | |
46b2ac21 KH |
879 | case Lisp_Misc_Boolfwd: |
880 | return (*XBOOLFWD (valcontents)->boolvar ? Qt : Qnil); | |
7921925c | 881 | |
46b2ac21 KH |
882 | case Lisp_Misc_Objfwd: |
883 | return *XOBJFWD (valcontents)->objvar; | |
7921925c | 884 | |
46b2ac21 KH |
885 | case Lisp_Misc_Buffer_Objfwd: |
886 | return *(Lisp_Object *)(XBUFFER_OBJFWD (valcontents)->offset | |
887 | + (char *)current_buffer); | |
7403b5c8 | 888 | |
e5f8af9e KH |
889 | case Lisp_Misc_Kboard_Objfwd: |
890 | return *(Lisp_Object *)(XKBOARD_OBJFWD (valcontents)->offset | |
891 | + (char *)current_kboard); | |
46b2ac21 | 892 | } |
7921925c JB |
893 | } |
894 | ||
895 | return valcontents; | |
896 | } | |
897 | ||
14e76af9 JB |
898 | DEFUN ("symbol-value", Fsymbol_value, Ssymbol_value, 1, 1, 0, |
899 | "Return SYMBOL's value. Error if that is void.") | |
d9c2a0f2 EN |
900 | (symbol) |
901 | Lisp_Object symbol; | |
14e76af9 | 902 | { |
0671d7c0 | 903 | Lisp_Object val; |
14e76af9 | 904 | |
d9c2a0f2 | 905 | val = find_symbol_value (symbol); |
14e76af9 | 906 | if (EQ (val, Qunbound)) |
d9c2a0f2 | 907 | return Fsignal (Qvoid_variable, Fcons (symbol, Qnil)); |
14e76af9 JB |
908 | else |
909 | return val; | |
910 | } | |
911 | ||
7921925c JB |
912 | DEFUN ("set", Fset, Sset, 2, 2, 0, |
913 | "Set SYMBOL's value to NEWVAL, and return NEWVAL.") | |
d9c2a0f2 EN |
914 | (symbol, newval) |
915 | register Lisp_Object symbol, newval; | |
05ef7169 RS |
916 | { |
917 | return set_internal (symbol, newval, 0); | |
918 | } | |
919 | ||
920 | /* Stpre the value NEWVAL into SYMBOL. | |
921 | If BINDFLAG is zero, then if this symbol is supposed to become | |
922 | local in every buffer where it is set, then we make it local. | |
923 | If BINDFLAG is nonzero, we don't do that. */ | |
924 | ||
925 | Lisp_Object | |
926 | set_internal (symbol, newval, bindflag) | |
927 | register Lisp_Object symbol, newval; | |
928 | int bindflag; | |
7921925c | 929 | { |
1bfcade3 | 930 | int voide = EQ (newval, Qunbound); |
7921925c | 931 | |
7921925c | 932 | register Lisp_Object valcontents, tem1, current_alist_element; |
7921925c | 933 | |
d9c2a0f2 EN |
934 | CHECK_SYMBOL (symbol, 0); |
935 | if (NILP (symbol) || EQ (symbol, Qt)) | |
936 | return Fsignal (Qsetting_constant, Fcons (symbol, Qnil)); | |
937 | valcontents = XSYMBOL (symbol)->value; | |
7921925c | 938 | |
e9ebc175 | 939 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 940 | { |
46b2ac21 | 941 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
865c050f KH |
942 | register int mask = XINT (*((Lisp_Object *) |
943 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
944 | if (mask > 0) |
945 | current_buffer->local_var_flags |= mask; | |
946 | } | |
947 | ||
e9ebc175 KH |
948 | else if (BUFFER_LOCAL_VALUEP (valcontents) |
949 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c | 950 | { |
8d4afcac KH |
951 | /* valcontents is actually a pointer to a struct resembling a cons, |
952 | with contents something like: | |
d8cafeb5 JB |
953 | (REALVALUE BUFFER CURRENT-ALIST-ELEMENT . DEFAULT-VALUE). |
954 | ||
955 | BUFFER is the last buffer for which this symbol's value was | |
956 | made up to date. | |
957 | ||
958 | CURRENT-ALIST-ELEMENT is a pointer to an element of BUFFER's | |
959 | local_var_alist, that being the element whose car is this | |
960 | variable. Or it can be a pointer to the | |
961 | (CURRENT-ALIST-ELEMENT . DEFAULT-VALUE), if BUFFER does not | |
962 | have an element in its alist for this variable (that is, if | |
963 | BUFFER sees the default value of this variable). | |
964 | ||
965 | If we want to examine or set the value and BUFFER is current, | |
966 | we just examine or set REALVALUE. If BUFFER is not current, we | |
967 | store the current REALVALUE value into CURRENT-ALIST-ELEMENT, | |
968 | then find the appropriate alist element for the buffer now | |
969 | current and set up CURRENT-ALIST-ELEMENT. Then we set | |
970 | REALVALUE out of that element, and store into BUFFER. | |
971 | ||
972 | If we are setting the variable and the current buffer does | |
973 | not have an alist entry for this variable, an alist entry is | |
974 | created. | |
975 | ||
976 | Note that REALVALUE can be a forwarding pointer. Each time | |
977 | it is examined or set, forwarding must be done. */ | |
978 | ||
979 | /* What value are we caching right now? */ | |
980 | current_alist_element = | |
8d4afcac | 981 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
d8cafeb5 JB |
982 | |
983 | /* If the current buffer is not the buffer whose binding is | |
984 | currently cached, or if it's a Lisp_Buffer_Local_Value and | |
985 | we're looking at the default value, the cache is invalid; we | |
986 | need to write it out, and find the new CURRENT-ALIST-ELEMENT. */ | |
987 | if ((current_buffer | |
8d4afcac | 988 | != XBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car)) |
e9ebc175 | 989 | || (BUFFER_LOCAL_VALUEP (valcontents) |
b06faa91 JB |
990 | && EQ (XCONS (current_alist_element)->car, |
991 | current_alist_element))) | |
7921925c | 992 | { |
d8cafeb5 JB |
993 | /* Write out the cached value for the old buffer; copy it |
994 | back to its alist element. This works if the current | |
995 | buffer only sees the default value, too. */ | |
996 | Fsetcdr (current_alist_element, | |
8d4afcac | 997 | do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car)); |
7921925c | 998 | |
d8cafeb5 | 999 | /* Find the new value for CURRENT-ALIST-ELEMENT. */ |
d9c2a0f2 | 1000 | tem1 = Fassq (symbol, current_buffer->local_var_alist); |
a33ef3ab | 1001 | if (NILP (tem1)) |
d8cafeb5 JB |
1002 | { |
1003 | /* This buffer still sees the default value. */ | |
1004 | ||
1005 | /* If the variable is a Lisp_Some_Buffer_Local_Value, | |
05ef7169 | 1006 | or if this is `let' rather than `set', |
d8cafeb5 JB |
1007 | make CURRENT-ALIST-ELEMENT point to itself, |
1008 | indicating that we're seeing the default value. */ | |
05ef7169 | 1009 | if (bindflag || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
8d4afcac | 1010 | tem1 = XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr; |
d8cafeb5 | 1011 | |
05ef7169 RS |
1012 | /* If it's a Lisp_Buffer_Local_Value, being set not bound, |
1013 | give this buffer a new assoc for a local value and set | |
d8cafeb5 JB |
1014 | CURRENT-ALIST-ELEMENT to point to that. */ |
1015 | else | |
1016 | { | |
d9c2a0f2 | 1017 | tem1 = Fcons (symbol, Fcdr (current_alist_element)); |
d8cafeb5 JB |
1018 | current_buffer->local_var_alist = |
1019 | Fcons (tem1, current_buffer->local_var_alist); | |
1020 | } | |
1021 | } | |
1022 | /* Cache the new buffer's assoc in CURRENT-ALIST-ELEMENT. */ | |
8d4afcac KH |
1023 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car |
1024 | = tem1; | |
d8cafeb5 JB |
1025 | |
1026 | /* Set BUFFER, now that CURRENT-ALIST-ELEMENT is accurate. */ | |
8d4afcac KH |
1027 | XSETBUFFER (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car, |
1028 | current_buffer); | |
7921925c | 1029 | } |
8d4afcac | 1030 | valcontents = XBUFFER_LOCAL_VALUE (valcontents)->car; |
7921925c | 1031 | } |
d8cafeb5 | 1032 | |
7921925c JB |
1033 | /* If storing void (making the symbol void), forward only through |
1034 | buffer-local indicator, not through Lisp_Objfwd, etc. */ | |
1035 | if (voide) | |
d9c2a0f2 | 1036 | store_symval_forwarding (symbol, Qnil, newval); |
7921925c | 1037 | else |
d9c2a0f2 | 1038 | store_symval_forwarding (symbol, valcontents, newval); |
d8cafeb5 | 1039 | |
7921925c JB |
1040 | return newval; |
1041 | } | |
1042 | \f | |
1043 | /* Access or set a buffer-local symbol's default value. */ | |
1044 | ||
d9c2a0f2 | 1045 | /* Return the default value of SYMBOL, but don't check for voidness. |
1bfcade3 | 1046 | Return Qunbound if it is void. */ |
7921925c JB |
1047 | |
1048 | Lisp_Object | |
d9c2a0f2 EN |
1049 | default_value (symbol) |
1050 | Lisp_Object symbol; | |
7921925c JB |
1051 | { |
1052 | register Lisp_Object valcontents; | |
1053 | ||
d9c2a0f2 EN |
1054 | CHECK_SYMBOL (symbol, 0); |
1055 | valcontents = XSYMBOL (symbol)->value; | |
7921925c JB |
1056 | |
1057 | /* For a built-in buffer-local variable, get the default value | |
1058 | rather than letting do_symval_forwarding get the current value. */ | |
e9ebc175 | 1059 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1060 | { |
46b2ac21 | 1061 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
7921925c | 1062 | |
865c050f | 1063 | if (XINT (*(Lisp_Object *) (idx + (char *) &buffer_local_flags)) != 0) |
7921925c JB |
1064 | return *(Lisp_Object *)(idx + (char *) &buffer_defaults); |
1065 | } | |
1066 | ||
1067 | /* Handle user-created local variables. */ | |
e9ebc175 KH |
1068 | if (BUFFER_LOCAL_VALUEP (valcontents) |
1069 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
7921925c JB |
1070 | { |
1071 | /* If var is set up for a buffer that lacks a local value for it, | |
1072 | the current value is nominally the default value. | |
1073 | But the current value slot may be more up to date, since | |
1074 | ordinary setq stores just that slot. So use that. */ | |
1075 | Lisp_Object current_alist_element, alist_element_car; | |
1076 | current_alist_element | |
8d4afcac | 1077 | = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; |
7921925c JB |
1078 | alist_element_car = XCONS (current_alist_element)->car; |
1079 | if (EQ (alist_element_car, current_alist_element)) | |
8d4afcac | 1080 | return do_symval_forwarding (XBUFFER_LOCAL_VALUE (valcontents)->car); |
7921925c | 1081 | else |
8d4afcac | 1082 | return XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->cdr; |
7921925c JB |
1083 | } |
1084 | /* For other variables, get the current value. */ | |
1085 | return do_symval_forwarding (valcontents); | |
1086 | } | |
1087 | ||
1088 | DEFUN ("default-boundp", Fdefault_boundp, Sdefault_boundp, 1, 1, 0, | |
c2124165 | 1089 | "Return t if SYMBOL has a non-void default value.\n\ |
7921925c JB |
1090 | This is the value that is seen in buffers that do not have their own values\n\ |
1091 | for this variable.") | |
d9c2a0f2 EN |
1092 | (symbol) |
1093 | Lisp_Object symbol; | |
7921925c JB |
1094 | { |
1095 | register Lisp_Object value; | |
1096 | ||
d9c2a0f2 | 1097 | value = default_value (symbol); |
1bfcade3 | 1098 | return (EQ (value, Qunbound) ? Qnil : Qt); |
7921925c JB |
1099 | } |
1100 | ||
1101 | DEFUN ("default-value", Fdefault_value, Sdefault_value, 1, 1, 0, | |
1102 | "Return SYMBOL's default value.\n\ | |
1103 | This is the value that is seen in buffers that do not have their own values\n\ | |
1104 | for this variable. The default value is meaningful for variables with\n\ | |
1105 | local bindings in certain buffers.") | |
d9c2a0f2 EN |
1106 | (symbol) |
1107 | Lisp_Object symbol; | |
7921925c JB |
1108 | { |
1109 | register Lisp_Object value; | |
1110 | ||
d9c2a0f2 | 1111 | value = default_value (symbol); |
1bfcade3 | 1112 | if (EQ (value, Qunbound)) |
d9c2a0f2 | 1113 | return Fsignal (Qvoid_variable, Fcons (symbol, Qnil)); |
7921925c JB |
1114 | return value; |
1115 | } | |
1116 | ||
1117 | DEFUN ("set-default", Fset_default, Sset_default, 2, 2, 0, | |
1118 | "Set SYMBOL's default value to VAL. SYMBOL and VAL are evaluated.\n\ | |
1119 | The default value is seen in buffers that do not have their own values\n\ | |
1120 | for this variable.") | |
d9c2a0f2 EN |
1121 | (symbol, value) |
1122 | Lisp_Object symbol, value; | |
7921925c JB |
1123 | { |
1124 | register Lisp_Object valcontents, current_alist_element, alist_element_buffer; | |
1125 | ||
d9c2a0f2 EN |
1126 | CHECK_SYMBOL (symbol, 0); |
1127 | valcontents = XSYMBOL (symbol)->value; | |
7921925c JB |
1128 | |
1129 | /* Handle variables like case-fold-search that have special slots | |
1130 | in the buffer. Make them work apparently like Lisp_Buffer_Local_Value | |
1131 | variables. */ | |
e9ebc175 | 1132 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1133 | { |
46b2ac21 | 1134 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
7921925c | 1135 | register struct buffer *b; |
865c050f KH |
1136 | register int mask = XINT (*((Lisp_Object *) |
1137 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
1138 | |
1139 | if (mask > 0) | |
1140 | { | |
1141 | *(Lisp_Object *)(idx + (char *) &buffer_defaults) = value; | |
1142 | for (b = all_buffers; b; b = b->next) | |
1143 | if (!(b->local_var_flags & mask)) | |
1144 | *(Lisp_Object *)(idx + (char *) b) = value; | |
1145 | } | |
1146 | return value; | |
1147 | } | |
1148 | ||
e9ebc175 KH |
1149 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
1150 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 1151 | return Fset (symbol, value); |
7921925c JB |
1152 | |
1153 | /* Store new value into the DEFAULT-VALUE slot */ | |
8d4afcac | 1154 | XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->cdr = value; |
7921925c JB |
1155 | |
1156 | /* If that slot is current, we must set the REALVALUE slot too */ | |
8d4afcac KH |
1157 | current_alist_element |
1158 | = XCONS (XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->cdr)->car; | |
7921925c JB |
1159 | alist_element_buffer = Fcar (current_alist_element); |
1160 | if (EQ (alist_element_buffer, current_alist_element)) | |
d9c2a0f2 | 1161 | store_symval_forwarding (symbol, XBUFFER_LOCAL_VALUE (valcontents)->car, |
8d4afcac | 1162 | value); |
7921925c JB |
1163 | |
1164 | return value; | |
1165 | } | |
1166 | ||
1167 | DEFUN ("setq-default", Fsetq_default, Ssetq_default, 2, UNEVALLED, 0, | |
0412bf67 RS |
1168 | "Set the default value of variable VAR to VALUE.\n\ |
1169 | VAR, the variable name, is literal (not evaluated);\n\ | |
1170 | VALUE is an expression and it is evaluated.\n\ | |
1171 | The default value of a variable is seen in buffers\n\ | |
1172 | that do not have their own values for the variable.\n\ | |
1173 | \n\ | |
1174 | More generally, you can use multiple variables and values, as in\n\ | |
d9c2a0f2 EN |
1175 | (setq-default SYMBOL VALUE SYMBOL VALUE...)\n\ |
1176 | This sets each SYMBOL's default value to the corresponding VALUE.\n\ | |
1177 | The VALUE for the Nth SYMBOL can refer to the new default values\n\ | |
0412bf67 | 1178 | of previous SYMs.") |
7921925c JB |
1179 | (args) |
1180 | Lisp_Object args; | |
1181 | { | |
1182 | register Lisp_Object args_left; | |
d9c2a0f2 | 1183 | register Lisp_Object val, symbol; |
7921925c JB |
1184 | struct gcpro gcpro1; |
1185 | ||
a33ef3ab | 1186 | if (NILP (args)) |
7921925c JB |
1187 | return Qnil; |
1188 | ||
1189 | args_left = args; | |
1190 | GCPRO1 (args); | |
1191 | ||
1192 | do | |
1193 | { | |
1194 | val = Feval (Fcar (Fcdr (args_left))); | |
d9c2a0f2 EN |
1195 | symbol = Fcar (args_left); |
1196 | Fset_default (symbol, val); | |
7921925c JB |
1197 | args_left = Fcdr (Fcdr (args_left)); |
1198 | } | |
a33ef3ab | 1199 | while (!NILP (args_left)); |
7921925c JB |
1200 | |
1201 | UNGCPRO; | |
1202 | return val; | |
1203 | } | |
1204 | \f | |
a5ca2b75 JB |
1205 | /* Lisp functions for creating and removing buffer-local variables. */ |
1206 | ||
7921925c JB |
1207 | DEFUN ("make-variable-buffer-local", Fmake_variable_buffer_local, Smake_variable_buffer_local, |
1208 | 1, 1, "vMake Variable Buffer Local: ", | |
1209 | "Make VARIABLE have a separate value for each buffer.\n\ | |
1210 | At any time, the value for the current buffer is in effect.\n\ | |
1211 | There is also a default value which is seen in any buffer which has not yet\n\ | |
1212 | set its own value.\n\ | |
1213 | Using `set' or `setq' to set the variable causes it to have a separate value\n\ | |
1214 | for the current buffer if it was previously using the default value.\n\ | |
1215 | The function `default-value' gets the default value and `set-default' sets it.") | |
d9c2a0f2 EN |
1216 | (variable) |
1217 | register Lisp_Object variable; | |
7921925c | 1218 | { |
8d4afcac | 1219 | register Lisp_Object tem, valcontents, newval; |
7921925c | 1220 | |
d9c2a0f2 | 1221 | CHECK_SYMBOL (variable, 0); |
7921925c | 1222 | |
d9c2a0f2 EN |
1223 | valcontents = XSYMBOL (variable)->value; |
1224 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)) | |
1225 | error ("Symbol %s may not be buffer-local", XSYMBOL (variable)->name->data); | |
7921925c | 1226 | |
e9ebc175 | 1227 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
d9c2a0f2 | 1228 | return variable; |
e9ebc175 | 1229 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
7921925c | 1230 | { |
d9c2a0f2 EN |
1231 | XMISCTYPE (XSYMBOL (variable)->value) = Lisp_Misc_Buffer_Local_Value; |
1232 | return variable; | |
7921925c JB |
1233 | } |
1234 | if (EQ (valcontents, Qunbound)) | |
d9c2a0f2 EN |
1235 | XSYMBOL (variable)->value = Qnil; |
1236 | tem = Fcons (Qnil, Fsymbol_value (variable)); | |
7921925c | 1237 | XCONS (tem)->car = tem; |
8d4afcac | 1238 | newval = allocate_misc (); |
324a6eef | 1239 | XMISCTYPE (newval) = Lisp_Misc_Buffer_Local_Value; |
d9c2a0f2 | 1240 | XBUFFER_LOCAL_VALUE (newval)->car = XSYMBOL (variable)->value; |
8d4afcac | 1241 | XBUFFER_LOCAL_VALUE (newval)->cdr = Fcons (Fcurrent_buffer (), tem); |
d9c2a0f2 EN |
1242 | XSYMBOL (variable)->value = newval; |
1243 | return variable; | |
7921925c JB |
1244 | } |
1245 | ||
1246 | DEFUN ("make-local-variable", Fmake_local_variable, Smake_local_variable, | |
1247 | 1, 1, "vMake Local Variable: ", | |
1248 | "Make VARIABLE have a separate value in the current buffer.\n\ | |
1249 | Other buffers will continue to share a common default value.\n\ | |
a782f0d5 RS |
1250 | \(The buffer-local value of VARIABLE starts out as the same value\n\ |
1251 | VARIABLE previously had. If VARIABLE was void, it remains void.\)\n\ | |
7921925c JB |
1252 | See also `make-variable-buffer-local'.\n\n\ |
1253 | If the variable is already arranged to become local when set,\n\ | |
1254 | this function causes a local value to exist for this buffer,\n\ | |
62476adc RS |
1255 | just as setting the variable would do.\n\ |
1256 | \n\ | |
1257 | Do not use `make-local-variable' to make a hook variable buffer-local.\n\ | |
1258 | Use `make-local-hook' instead.") | |
d9c2a0f2 EN |
1259 | (variable) |
1260 | register Lisp_Object variable; | |
7921925c JB |
1261 | { |
1262 | register Lisp_Object tem, valcontents; | |
1263 | ||
d9c2a0f2 | 1264 | CHECK_SYMBOL (variable, 0); |
7921925c | 1265 | |
d9c2a0f2 EN |
1266 | valcontents = XSYMBOL (variable)->value; |
1267 | if (EQ (variable, Qnil) || EQ (variable, Qt) || KBOARD_OBJFWDP (valcontents)) | |
1268 | error ("Symbol %s may not be buffer-local", XSYMBOL (variable)->name->data); | |
7921925c | 1269 | |
e9ebc175 | 1270 | if (BUFFER_LOCAL_VALUEP (valcontents) || BUFFER_OBJFWDP (valcontents)) |
7921925c | 1271 | { |
d9c2a0f2 | 1272 | tem = Fboundp (variable); |
7403b5c8 | 1273 | |
7921925c JB |
1274 | /* Make sure the symbol has a local value in this particular buffer, |
1275 | by setting it to the same value it already has. */ | |
d9c2a0f2 EN |
1276 | Fset (variable, (EQ (tem, Qt) ? Fsymbol_value (variable) : Qunbound)); |
1277 | return variable; | |
7921925c | 1278 | } |
d9c2a0f2 | 1279 | /* Make sure symbol is set up to hold per-buffer values */ |
e9ebc175 | 1280 | if (!SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
7921925c | 1281 | { |
8d4afcac | 1282 | Lisp_Object newval; |
7921925c JB |
1283 | tem = Fcons (Qnil, do_symval_forwarding (valcontents)); |
1284 | XCONS (tem)->car = tem; | |
8d4afcac | 1285 | newval = allocate_misc (); |
324a6eef | 1286 | XMISCTYPE (newval) = Lisp_Misc_Some_Buffer_Local_Value; |
d9c2a0f2 | 1287 | XBUFFER_LOCAL_VALUE (newval)->car = XSYMBOL (variable)->value; |
8d4afcac | 1288 | XBUFFER_LOCAL_VALUE (newval)->cdr = Fcons (Qnil, tem); |
d9c2a0f2 | 1289 | XSYMBOL (variable)->value = newval; |
7921925c | 1290 | } |
d9c2a0f2 EN |
1291 | /* Make sure this buffer has its own value of symbol */ |
1292 | tem = Fassq (variable, current_buffer->local_var_alist); | |
a33ef3ab | 1293 | if (NILP (tem)) |
7921925c | 1294 | { |
a5d004a1 RS |
1295 | /* Swap out any local binding for some other buffer, and make |
1296 | sure the current value is permanently recorded, if it's the | |
1297 | default value. */ | |
d9c2a0f2 | 1298 | find_symbol_value (variable); |
a5d004a1 | 1299 | |
7921925c | 1300 | current_buffer->local_var_alist |
d9c2a0f2 | 1301 | = Fcons (Fcons (variable, XCONS (XCONS (XBUFFER_LOCAL_VALUE (XSYMBOL (variable)->value)->cdr)->cdr)->cdr), |
7921925c JB |
1302 | current_buffer->local_var_alist); |
1303 | ||
1304 | /* Make sure symbol does not think it is set up for this buffer; | |
1305 | force it to look once again for this buffer's value */ | |
1306 | { | |
8d4afcac | 1307 | Lisp_Object *pvalbuf; |
a5d004a1 | 1308 | |
d9c2a0f2 | 1309 | valcontents = XSYMBOL (variable)->value; |
a5d004a1 | 1310 | |
8d4afcac KH |
1311 | pvalbuf = &XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
1312 | if (current_buffer == XBUFFER (*pvalbuf)) | |
1313 | *pvalbuf = Qnil; | |
7921925c | 1314 | } |
7921925c | 1315 | } |
a5ca2b75 JB |
1316 | |
1317 | /* If the symbol forwards into a C variable, then swap in the | |
1318 | variable for this buffer immediately. If C code modifies the | |
1319 | variable before we swap in, then that new value will clobber the | |
1320 | default value the next time we swap. */ | |
d9c2a0f2 | 1321 | valcontents = XBUFFER_LOCAL_VALUE (XSYMBOL (variable)->value)->car; |
e9ebc175 | 1322 | if (INTFWDP (valcontents) || BOOLFWDP (valcontents) || OBJFWDP (valcontents)) |
d9c2a0f2 | 1323 | swap_in_symval_forwarding (variable, XSYMBOL (variable)->value); |
a5ca2b75 | 1324 | |
d9c2a0f2 | 1325 | return variable; |
7921925c JB |
1326 | } |
1327 | ||
1328 | DEFUN ("kill-local-variable", Fkill_local_variable, Skill_local_variable, | |
1329 | 1, 1, "vKill Local Variable: ", | |
1330 | "Make VARIABLE no longer have a separate value in the current buffer.\n\ | |
1331 | From now on the default value will apply in this buffer.") | |
d9c2a0f2 EN |
1332 | (variable) |
1333 | register Lisp_Object variable; | |
7921925c JB |
1334 | { |
1335 | register Lisp_Object tem, valcontents; | |
1336 | ||
d9c2a0f2 | 1337 | CHECK_SYMBOL (variable, 0); |
7921925c | 1338 | |
d9c2a0f2 | 1339 | valcontents = XSYMBOL (variable)->value; |
7921925c | 1340 | |
e9ebc175 | 1341 | if (BUFFER_OBJFWDP (valcontents)) |
7921925c | 1342 | { |
46b2ac21 | 1343 | register int idx = XBUFFER_OBJFWD (valcontents)->offset; |
865c050f KH |
1344 | register int mask = XINT (*((Lisp_Object*) |
1345 | (idx + (char *)&buffer_local_flags))); | |
7921925c JB |
1346 | |
1347 | if (mask > 0) | |
1348 | { | |
1349 | *(Lisp_Object *)(idx + (char *) current_buffer) | |
1350 | = *(Lisp_Object *)(idx + (char *) &buffer_defaults); | |
1351 | current_buffer->local_var_flags &= ~mask; | |
1352 | } | |
d9c2a0f2 | 1353 | return variable; |
7921925c JB |
1354 | } |
1355 | ||
e9ebc175 KH |
1356 | if (!BUFFER_LOCAL_VALUEP (valcontents) |
1357 | && !SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
d9c2a0f2 | 1358 | return variable; |
7921925c JB |
1359 | |
1360 | /* Get rid of this buffer's alist element, if any */ | |
1361 | ||
d9c2a0f2 | 1362 | tem = Fassq (variable, current_buffer->local_var_alist); |
a33ef3ab | 1363 | if (!NILP (tem)) |
8d4afcac KH |
1364 | current_buffer->local_var_alist |
1365 | = Fdelq (tem, current_buffer->local_var_alist); | |
7921925c | 1366 | |
79c83e03 KH |
1367 | /* If the symbol is set up for the current buffer, recompute its |
1368 | value. We have to do it now, or else forwarded objects won't | |
1369 | work right. */ | |
7921925c | 1370 | { |
8d4afcac | 1371 | Lisp_Object *pvalbuf; |
d9c2a0f2 | 1372 | valcontents = XSYMBOL (variable)->value; |
8d4afcac KH |
1373 | pvalbuf = &XCONS (XBUFFER_LOCAL_VALUE (valcontents)->cdr)->car; |
1374 | if (current_buffer == XBUFFER (*pvalbuf)) | |
79c83e03 KH |
1375 | { |
1376 | *pvalbuf = Qnil; | |
978dd578 | 1377 | find_symbol_value (variable); |
79c83e03 | 1378 | } |
7921925c JB |
1379 | } |
1380 | ||
d9c2a0f2 | 1381 | return variable; |
7921925c | 1382 | } |
62476adc RS |
1383 | |
1384 | DEFUN ("local-variable-p", Flocal_variable_p, Slocal_variable_p, | |
c48ead86 KH |
1385 | 1, 2, 0, |
1386 | "Non-nil if VARIABLE has a local binding in buffer BUFFER.\n\ | |
1387 | BUFFER defaults to the current buffer.") | |
d9c2a0f2 EN |
1388 | (variable, buffer) |
1389 | register Lisp_Object variable, buffer; | |
62476adc RS |
1390 | { |
1391 | Lisp_Object valcontents; | |
c48ead86 KH |
1392 | register struct buffer *buf; |
1393 | ||
1394 | if (NILP (buffer)) | |
1395 | buf = current_buffer; | |
1396 | else | |
1397 | { | |
1398 | CHECK_BUFFER (buffer, 0); | |
1399 | buf = XBUFFER (buffer); | |
1400 | } | |
62476adc | 1401 | |
d9c2a0f2 | 1402 | CHECK_SYMBOL (variable, 0); |
62476adc | 1403 | |
d9c2a0f2 | 1404 | valcontents = XSYMBOL (variable)->value; |
c48ead86 | 1405 | if (BUFFER_LOCAL_VALUEP (valcontents) |
1e5f16fa | 1406 | || SOME_BUFFER_LOCAL_VALUEP (valcontents)) |
c48ead86 KH |
1407 | { |
1408 | Lisp_Object tail, elt; | |
1409 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1410 | { | |
1411 | elt = XCONS (tail)->car; | |
d9c2a0f2 | 1412 | if (EQ (variable, XCONS (elt)->car)) |
c48ead86 KH |
1413 | return Qt; |
1414 | } | |
1415 | } | |
1416 | if (BUFFER_OBJFWDP (valcontents)) | |
1417 | { | |
1418 | int offset = XBUFFER_OBJFWD (valcontents)->offset; | |
1419 | int mask = XINT (*(Lisp_Object *)(offset + (char *)&buffer_local_flags)); | |
1420 | if (mask == -1 || (buf->local_var_flags & mask)) | |
1421 | return Qt; | |
1422 | } | |
1423 | return Qnil; | |
62476adc | 1424 | } |
f4f04cee RS |
1425 | |
1426 | DEFUN ("local-variable-if-set-p", Flocal_variable_if_set_p, Slocal_variable_if_set_p, | |
1427 | 1, 2, 0, | |
1428 | "Non-nil if VARIABLE will be local in buffer BUFFER if it is set there.\n\ | |
1429 | BUFFER defaults to the current buffer.") | |
d9c2a0f2 EN |
1430 | (variable, buffer) |
1431 | register Lisp_Object variable, buffer; | |
f4f04cee RS |
1432 | { |
1433 | Lisp_Object valcontents; | |
1434 | register struct buffer *buf; | |
1435 | ||
1436 | if (NILP (buffer)) | |
1437 | buf = current_buffer; | |
1438 | else | |
1439 | { | |
1440 | CHECK_BUFFER (buffer, 0); | |
1441 | buf = XBUFFER (buffer); | |
1442 | } | |
1443 | ||
d9c2a0f2 | 1444 | CHECK_SYMBOL (variable, 0); |
f4f04cee | 1445 | |
d9c2a0f2 | 1446 | valcontents = XSYMBOL (variable)->value; |
f4f04cee RS |
1447 | |
1448 | /* This means that make-variable-buffer-local was done. */ | |
1449 | if (BUFFER_LOCAL_VALUEP (valcontents)) | |
1450 | return Qt; | |
1451 | /* All these slots become local if they are set. */ | |
1452 | if (BUFFER_OBJFWDP (valcontents)) | |
1453 | return Qt; | |
1454 | if (SOME_BUFFER_LOCAL_VALUEP (valcontents)) | |
1455 | { | |
1456 | Lisp_Object tail, elt; | |
1457 | for (tail = buf->local_var_alist; CONSP (tail); tail = XCONS (tail)->cdr) | |
1458 | { | |
1459 | elt = XCONS (tail)->car; | |
d9c2a0f2 | 1460 | if (EQ (variable, XCONS (elt)->car)) |
f4f04cee RS |
1461 | return Qt; |
1462 | } | |
1463 | } | |
1464 | return Qnil; | |
1465 | } | |
7921925c | 1466 | \f |
ffd56f97 JB |
1467 | /* Find the function at the end of a chain of symbol function indirections. */ |
1468 | ||
1469 | /* If OBJECT is a symbol, find the end of its function chain and | |
1470 | return the value found there. If OBJECT is not a symbol, just | |
1471 | return it. If there is a cycle in the function chain, signal a | |
1472 | cyclic-function-indirection error. | |
1473 | ||
1474 | This is like Findirect_function, except that it doesn't signal an | |
1475 | error if the chain ends up unbound. */ | |
1476 | Lisp_Object | |
a2932990 | 1477 | indirect_function (object) |
62476adc | 1478 | register Lisp_Object object; |
ffd56f97 | 1479 | { |
eb8c3be9 | 1480 | Lisp_Object tortoise, hare; |
ffd56f97 | 1481 | |
eb8c3be9 | 1482 | hare = tortoise = object; |
ffd56f97 JB |
1483 | |
1484 | for (;;) | |
1485 | { | |
e9ebc175 | 1486 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
ffd56f97 JB |
1487 | break; |
1488 | hare = XSYMBOL (hare)->function; | |
e9ebc175 | 1489 | if (!SYMBOLP (hare) || EQ (hare, Qunbound)) |
ffd56f97 JB |
1490 | break; |
1491 | hare = XSYMBOL (hare)->function; | |
1492 | ||
eb8c3be9 | 1493 | tortoise = XSYMBOL (tortoise)->function; |
ffd56f97 | 1494 | |
eb8c3be9 | 1495 | if (EQ (hare, tortoise)) |
ffd56f97 JB |
1496 | Fsignal (Qcyclic_function_indirection, Fcons (object, Qnil)); |
1497 | } | |
1498 | ||
1499 | return hare; | |
1500 | } | |
1501 | ||
1502 | DEFUN ("indirect-function", Findirect_function, Sindirect_function, 1, 1, 0, | |
1503 | "Return the function at the end of OBJECT's function chain.\n\ | |
1504 | If OBJECT is a symbol, follow all function indirections and return the final\n\ | |
1505 | function binding.\n\ | |
1506 | If OBJECT is not a symbol, just return it.\n\ | |
1507 | Signal a void-function error if the final symbol is unbound.\n\ | |
1508 | Signal a cyclic-function-indirection error if there is a loop in the\n\ | |
1509 | function chain of symbols.") | |
1510 | (object) | |
1511 | register Lisp_Object object; | |
1512 | { | |
1513 | Lisp_Object result; | |
1514 | ||
1515 | result = indirect_function (object); | |
1516 | ||
1517 | if (EQ (result, Qunbound)) | |
1518 | return Fsignal (Qvoid_function, Fcons (object, Qnil)); | |
1519 | return result; | |
1520 | } | |
1521 | \f | |
7921925c JB |
1522 | /* Extract and set vector and string elements */ |
1523 | ||
1524 | DEFUN ("aref", Faref, Saref, 2, 2, 0, | |
d9c2a0f2 | 1525 | "Return the element of ARRAY at index IDX.\n\ |
4d276982 | 1526 | ARRAY may be a vector, a string, a char-table, a bool-vector,\n\ |
d9c2a0f2 | 1527 | or a byte-code object. IDX starts at 0.") |
7921925c JB |
1528 | (array, idx) |
1529 | register Lisp_Object array; | |
1530 | Lisp_Object idx; | |
1531 | { | |
1532 | register int idxval; | |
1533 | ||
1534 | CHECK_NUMBER (idx, 1); | |
1535 | idxval = XINT (idx); | |
e9ebc175 | 1536 | if (STRINGP (array)) |
7921925c JB |
1537 | { |
1538 | Lisp_Object val; | |
c24e4efe KH |
1539 | if (idxval < 0 || idxval >= XSTRING (array)->size) |
1540 | args_out_of_range (array, idx); | |
1b42cf2e | 1541 | XSETFASTINT (val, (unsigned char) XSTRING (array)->data[idxval]); |
7921925c JB |
1542 | return val; |
1543 | } | |
4d276982 RS |
1544 | else if (BOOL_VECTOR_P (array)) |
1545 | { | |
1546 | int val; | |
4d276982 RS |
1547 | |
1548 | if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size) | |
1549 | args_out_of_range (array, idx); | |
1550 | ||
68be917d KH |
1551 | val = (unsigned char) XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR]; |
1552 | return (val & (1 << (idxval % BITS_PER_CHAR)) ? Qt : Qnil); | |
4d276982 RS |
1553 | } |
1554 | else if (CHAR_TABLE_P (array)) | |
1555 | { | |
1556 | Lisp_Object val; | |
1557 | ||
1558 | if (idxval < 0) | |
1559 | args_out_of_range (array, idx); | |
3a6cf6bd | 1560 | if (idxval < CHAR_TABLE_SINGLE_BYTE_SLOTS) |
8313c4e7 | 1561 | { |
39e16e51 | 1562 | /* For ASCII and 8-bit European characters, the element is |
3a6cf6bd | 1563 | stored in the top table. */ |
8313c4e7 KH |
1564 | val = XCHAR_TABLE (array)->contents[idxval]; |
1565 | if (NILP (val)) | |
1566 | val = XCHAR_TABLE (array)->defalt; | |
1567 | while (NILP (val)) /* Follow parents until we find some value. */ | |
1568 | { | |
1569 | array = XCHAR_TABLE (array)->parent; | |
1570 | if (NILP (array)) | |
1571 | return Qnil; | |
1572 | val = XCHAR_TABLE (array)->contents[idxval]; | |
1573 | if (NILP (val)) | |
1574 | val = XCHAR_TABLE (array)->defalt; | |
1575 | } | |
1576 | return val; | |
1577 | } | |
4d276982 RS |
1578 | else |
1579 | { | |
39e16e51 KH |
1580 | int code[4], i; |
1581 | Lisp_Object sub_table; | |
8313c4e7 | 1582 | |
39e16e51 KH |
1583 | SPLIT_NON_ASCII_CHAR (idxval, code[0], code[1], code[2]); |
1584 | if (code[0] != CHARSET_COMPOSITION) | |
1585 | { | |
1586 | if (code[1] < 32) code[1] = -1; | |
1587 | else if (code[2] < 32) code[2] = -1; | |
1588 | } | |
1589 | /* Here, the possible range of CODE[0] (== charset ID) is | |
1590 | 128..MAX_CHARSET. Since the top level char table contains | |
1591 | data for multibyte characters after 256th element, we must | |
1592 | increment CODE[0] by 128 to get a correct index. */ | |
1593 | code[0] += 128; | |
1594 | code[3] = -1; /* anchor */ | |
4d276982 RS |
1595 | |
1596 | try_parent_char_table: | |
39e16e51 KH |
1597 | sub_table = array; |
1598 | for (i = 0; code[i] >= 0; i++) | |
4d276982 | 1599 | { |
39e16e51 KH |
1600 | val = XCHAR_TABLE (sub_table)->contents[code[i]]; |
1601 | if (SUB_CHAR_TABLE_P (val)) | |
1602 | sub_table = val; | |
1603 | else | |
8313c4e7 | 1604 | { |
39e16e51 KH |
1605 | if (NILP (val)) |
1606 | val = XCHAR_TABLE (sub_table)->defalt; | |
1607 | if (NILP (val)) | |
1608 | { | |
1609 | array = XCHAR_TABLE (array)->parent; | |
1610 | if (!NILP (array)) | |
1611 | goto try_parent_char_table; | |
1612 | } | |
1613 | return val; | |
8313c4e7 | 1614 | } |
4d276982 | 1615 | } |
39e16e51 KH |
1616 | /* Here, VAL is a sub char table. We try the default value |
1617 | and parent. */ | |
1618 | val = XCHAR_TABLE (val)->defalt; | |
8313c4e7 | 1619 | if (NILP (val)) |
4d276982 RS |
1620 | { |
1621 | array = XCHAR_TABLE (array)->parent; | |
39e16e51 KH |
1622 | if (!NILP (array)) |
1623 | goto try_parent_char_table; | |
4d276982 | 1624 | } |
4d276982 RS |
1625 | return val; |
1626 | } | |
4d276982 | 1627 | } |
7921925c | 1628 | else |
c24e4efe | 1629 | { |
7f358972 RS |
1630 | int size; |
1631 | if (VECTORP (array)) | |
1632 | size = XVECTOR (array)->size; | |
1633 | else if (COMPILEDP (array)) | |
1634 | size = XVECTOR (array)->size & PSEUDOVECTOR_SIZE_MASK; | |
1635 | else | |
1636 | wrong_type_argument (Qarrayp, array); | |
1637 | ||
1638 | if (idxval < 0 || idxval >= size) | |
c24e4efe KH |
1639 | args_out_of_range (array, idx); |
1640 | return XVECTOR (array)->contents[idxval]; | |
1641 | } | |
7921925c JB |
1642 | } |
1643 | ||
1644 | DEFUN ("aset", Faset, Saset, 3, 3, 0, | |
73d40355 | 1645 | "Store into the element of ARRAY at index IDX the value NEWELT.\n\ |
9346f507 RS |
1646 | ARRAY may be a vector, a string, a char-table or a bool-vector.\n\ |
1647 | IDX starts at 0.") | |
7921925c JB |
1648 | (array, idx, newelt) |
1649 | register Lisp_Object array; | |
1650 | Lisp_Object idx, newelt; | |
1651 | { | |
1652 | register int idxval; | |
1653 | ||
1654 | CHECK_NUMBER (idx, 1); | |
1655 | idxval = XINT (idx); | |
4d276982 RS |
1656 | if (!VECTORP (array) && !STRINGP (array) && !BOOL_VECTOR_P (array) |
1657 | && ! CHAR_TABLE_P (array)) | |
7921925c | 1658 | array = wrong_type_argument (Qarrayp, array); |
7921925c JB |
1659 | CHECK_IMPURE (array); |
1660 | ||
e9ebc175 | 1661 | if (VECTORP (array)) |
c24e4efe KH |
1662 | { |
1663 | if (idxval < 0 || idxval >= XVECTOR (array)->size) | |
1664 | args_out_of_range (array, idx); | |
1665 | XVECTOR (array)->contents[idxval] = newelt; | |
1666 | } | |
4d276982 RS |
1667 | else if (BOOL_VECTOR_P (array)) |
1668 | { | |
1669 | int val; | |
4d276982 RS |
1670 | |
1671 | if (idxval < 0 || idxval >= XBOOL_VECTOR (array)->size) | |
1672 | args_out_of_range (array, idx); | |
1673 | ||
68be917d | 1674 | val = (unsigned char) XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR]; |
4d276982 RS |
1675 | |
1676 | if (! NILP (newelt)) | |
68be917d | 1677 | val |= 1 << (idxval % BITS_PER_CHAR); |
4d276982 | 1678 | else |
68be917d KH |
1679 | val &= ~(1 << (idxval % BITS_PER_CHAR)); |
1680 | XBOOL_VECTOR (array)->data[idxval / BITS_PER_CHAR] = val; | |
4d276982 RS |
1681 | } |
1682 | else if (CHAR_TABLE_P (array)) | |
1683 | { | |
1684 | Lisp_Object val; | |
1685 | ||
1686 | if (idxval < 0) | |
1687 | args_out_of_range (array, idx); | |
3a6cf6bd | 1688 | if (idxval < CHAR_TABLE_SINGLE_BYTE_SLOTS) |
8313c4e7 | 1689 | XCHAR_TABLE (array)->contents[idxval] = newelt; |
4d276982 RS |
1690 | else |
1691 | { | |
39e16e51 | 1692 | int code[4], i; |
8313c4e7 | 1693 | Lisp_Object val; |
4d276982 | 1694 | |
39e16e51 KH |
1695 | SPLIT_NON_ASCII_CHAR (idxval, code[0], code[1], code[2]); |
1696 | if (code[0] != CHARSET_COMPOSITION) | |
1697 | { | |
1698 | if (code[1] < 32) code[1] = -1; | |
1699 | else if (code[2] < 32) code[2] = -1; | |
1700 | } | |
1701 | /* See the comment of the corresponding part in Faref. */ | |
1702 | code[0] += 128; | |
1703 | code[3] = -1; /* anchor */ | |
1704 | for (i = 0; code[i + 1] >= 0; i++) | |
8313c4e7 | 1705 | { |
39e16e51 KH |
1706 | val = XCHAR_TABLE (array)->contents[code[i]]; |
1707 | if (SUB_CHAR_TABLE_P (val)) | |
8313c4e7 KH |
1708 | array = val; |
1709 | else | |
39e16e51 | 1710 | /* VAL is a leaf. Create a sub char table with the |
c8823c61 KH |
1711 | default value VAL or XCHAR_TABLE (array)->defalt |
1712 | and look into it. */ | |
39e16e51 | 1713 | array = (XCHAR_TABLE (array)->contents[code[i]] |
c8823c61 KH |
1714 | = make_sub_char_table (NILP (val) |
1715 | ? XCHAR_TABLE (array)->defalt | |
1716 | : val)); | |
8313c4e7 | 1717 | } |
39e16e51 | 1718 | XCHAR_TABLE (array)->contents[code[i]] = newelt; |
4d276982 | 1719 | } |
4d276982 | 1720 | } |
7921925c JB |
1721 | else |
1722 | { | |
c24e4efe KH |
1723 | if (idxval < 0 || idxval >= XSTRING (array)->size) |
1724 | args_out_of_range (array, idx); | |
7921925c JB |
1725 | CHECK_NUMBER (newelt, 2); |
1726 | XSTRING (array)->data[idxval] = XINT (newelt); | |
1727 | } | |
1728 | ||
1729 | return newelt; | |
1730 | } | |
7921925c JB |
1731 | \f |
1732 | /* Arithmetic functions */ | |
1733 | ||
1734 | enum comparison { equal, notequal, less, grtr, less_or_equal, grtr_or_equal }; | |
1735 | ||
1736 | Lisp_Object | |
1737 | arithcompare (num1, num2, comparison) | |
1738 | Lisp_Object num1, num2; | |
1739 | enum comparison comparison; | |
1740 | { | |
1741 | double f1, f2; | |
1742 | int floatp = 0; | |
1743 | ||
1744 | #ifdef LISP_FLOAT_TYPE | |
1745 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num1, 0); | |
1746 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (num2, 0); | |
1747 | ||
e9ebc175 | 1748 | if (FLOATP (num1) || FLOATP (num2)) |
7921925c JB |
1749 | { |
1750 | floatp = 1; | |
e9ebc175 KH |
1751 | f1 = (FLOATP (num1)) ? XFLOAT (num1)->data : XINT (num1); |
1752 | f2 = (FLOATP (num2)) ? XFLOAT (num2)->data : XINT (num2); | |
7921925c JB |
1753 | } |
1754 | #else | |
1755 | CHECK_NUMBER_COERCE_MARKER (num1, 0); | |
1756 | CHECK_NUMBER_COERCE_MARKER (num2, 0); | |
1757 | #endif /* LISP_FLOAT_TYPE */ | |
1758 | ||
1759 | switch (comparison) | |
1760 | { | |
1761 | case equal: | |
1762 | if (floatp ? f1 == f2 : XINT (num1) == XINT (num2)) | |
1763 | return Qt; | |
1764 | return Qnil; | |
1765 | ||
1766 | case notequal: | |
1767 | if (floatp ? f1 != f2 : XINT (num1) != XINT (num2)) | |
1768 | return Qt; | |
1769 | return Qnil; | |
1770 | ||
1771 | case less: | |
1772 | if (floatp ? f1 < f2 : XINT (num1) < XINT (num2)) | |
1773 | return Qt; | |
1774 | return Qnil; | |
1775 | ||
1776 | case less_or_equal: | |
1777 | if (floatp ? f1 <= f2 : XINT (num1) <= XINT (num2)) | |
1778 | return Qt; | |
1779 | return Qnil; | |
1780 | ||
1781 | case grtr: | |
1782 | if (floatp ? f1 > f2 : XINT (num1) > XINT (num2)) | |
1783 | return Qt; | |
1784 | return Qnil; | |
1785 | ||
1786 | case grtr_or_equal: | |
1787 | if (floatp ? f1 >= f2 : XINT (num1) >= XINT (num2)) | |
1788 | return Qt; | |
1789 | return Qnil; | |
25e40a4b JB |
1790 | |
1791 | default: | |
1792 | abort (); | |
7921925c JB |
1793 | } |
1794 | } | |
1795 | ||
1796 | DEFUN ("=", Feqlsign, Seqlsign, 2, 2, 0, | |
c2124165 | 1797 | "Return t if two args, both numbers or markers, are equal.") |
7921925c JB |
1798 | (num1, num2) |
1799 | register Lisp_Object num1, num2; | |
1800 | { | |
1801 | return arithcompare (num1, num2, equal); | |
1802 | } | |
1803 | ||
1804 | DEFUN ("<", Flss, Slss, 2, 2, 0, | |
c2124165 | 1805 | "Return t if first arg is less than second arg. Both must be numbers or markers.") |
7921925c JB |
1806 | (num1, num2) |
1807 | register Lisp_Object num1, num2; | |
1808 | { | |
1809 | return arithcompare (num1, num2, less); | |
1810 | } | |
1811 | ||
1812 | DEFUN (">", Fgtr, Sgtr, 2, 2, 0, | |
c2124165 | 1813 | "Return t if first arg is greater than second arg. Both must be numbers or markers.") |
7921925c JB |
1814 | (num1, num2) |
1815 | register Lisp_Object num1, num2; | |
1816 | { | |
1817 | return arithcompare (num1, num2, grtr); | |
1818 | } | |
1819 | ||
1820 | DEFUN ("<=", Fleq, Sleq, 2, 2, 0, | |
c2124165 | 1821 | "Return t if first arg is less than or equal to second arg.\n\ |
7921925c JB |
1822 | Both must be numbers or markers.") |
1823 | (num1, num2) | |
1824 | register Lisp_Object num1, num2; | |
1825 | { | |
1826 | return arithcompare (num1, num2, less_or_equal); | |
1827 | } | |
1828 | ||
1829 | DEFUN (">=", Fgeq, Sgeq, 2, 2, 0, | |
c2124165 | 1830 | "Return t if first arg is greater than or equal to second arg.\n\ |
7921925c JB |
1831 | Both must be numbers or markers.") |
1832 | (num1, num2) | |
1833 | register Lisp_Object num1, num2; | |
1834 | { | |
1835 | return arithcompare (num1, num2, grtr_or_equal); | |
1836 | } | |
1837 | ||
1838 | DEFUN ("/=", Fneq, Sneq, 2, 2, 0, | |
c2124165 | 1839 | "Return t if first arg is not equal to second arg. Both must be numbers or markers.") |
7921925c JB |
1840 | (num1, num2) |
1841 | register Lisp_Object num1, num2; | |
1842 | { | |
1843 | return arithcompare (num1, num2, notequal); | |
1844 | } | |
1845 | ||
c2124165 | 1846 | DEFUN ("zerop", Fzerop, Szerop, 1, 1, 0, "Return t if NUMBER is zero.") |
d9c2a0f2 EN |
1847 | (number) |
1848 | register Lisp_Object number; | |
7921925c JB |
1849 | { |
1850 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 | 1851 | CHECK_NUMBER_OR_FLOAT (number, 0); |
7921925c | 1852 | |
d9c2a0f2 | 1853 | if (FLOATP (number)) |
7921925c | 1854 | { |
d9c2a0f2 | 1855 | if (XFLOAT(number)->data == 0.0) |
7921925c JB |
1856 | return Qt; |
1857 | return Qnil; | |
1858 | } | |
1859 | #else | |
d9c2a0f2 | 1860 | CHECK_NUMBER (number, 0); |
7921925c JB |
1861 | #endif /* LISP_FLOAT_TYPE */ |
1862 | ||
d9c2a0f2 | 1863 | if (!XINT (number)) |
7921925c JB |
1864 | return Qt; |
1865 | return Qnil; | |
1866 | } | |
1867 | \f | |
34f4f6c6 | 1868 | /* Convert between long values and pairs of Lisp integers. */ |
51cf3e31 JB |
1869 | |
1870 | Lisp_Object | |
1871 | long_to_cons (i) | |
1872 | unsigned long i; | |
1873 | { | |
1874 | unsigned int top = i >> 16; | |
1875 | unsigned int bot = i & 0xFFFF; | |
1876 | if (top == 0) | |
1877 | return make_number (bot); | |
b42cfa11 | 1878 | if (top == (unsigned long)-1 >> 16) |
51cf3e31 JB |
1879 | return Fcons (make_number (-1), make_number (bot)); |
1880 | return Fcons (make_number (top), make_number (bot)); | |
1881 | } | |
1882 | ||
1883 | unsigned long | |
1884 | cons_to_long (c) | |
1885 | Lisp_Object c; | |
1886 | { | |
878a80cc | 1887 | Lisp_Object top, bot; |
51cf3e31 JB |
1888 | if (INTEGERP (c)) |
1889 | return XINT (c); | |
1890 | top = XCONS (c)->car; | |
1891 | bot = XCONS (c)->cdr; | |
1892 | if (CONSP (bot)) | |
1893 | bot = XCONS (bot)->car; | |
1894 | return ((XINT (top) << 16) | XINT (bot)); | |
1895 | } | |
1896 | \f | |
f2980264 | 1897 | DEFUN ("number-to-string", Fnumber_to_string, Snumber_to_string, 1, 1, 0, |
d9c2a0f2 | 1898 | "Convert NUMBER to a string by printing it in decimal.\n\ |
25e40a4b | 1899 | Uses a minus sign if negative.\n\ |
d9c2a0f2 EN |
1900 | NUMBER may be an integer or a floating point number.") |
1901 | (number) | |
1902 | Lisp_Object number; | |
7921925c | 1903 | { |
6030ce64 | 1904 | char buffer[VALBITS]; |
7921925c JB |
1905 | |
1906 | #ifndef LISP_FLOAT_TYPE | |
d9c2a0f2 | 1907 | CHECK_NUMBER (number, 0); |
7921925c | 1908 | #else |
d9c2a0f2 | 1909 | CHECK_NUMBER_OR_FLOAT (number, 0); |
7921925c | 1910 | |
d9c2a0f2 | 1911 | if (FLOATP (number)) |
7921925c JB |
1912 | { |
1913 | char pigbuf[350]; /* see comments in float_to_string */ | |
1914 | ||
d9c2a0f2 | 1915 | float_to_string (pigbuf, XFLOAT(number)->data); |
7403b5c8 | 1916 | return build_string (pigbuf); |
7921925c JB |
1917 | } |
1918 | #endif /* LISP_FLOAT_TYPE */ | |
1919 | ||
e6c82a8d | 1920 | if (sizeof (int) == sizeof (EMACS_INT)) |
d9c2a0f2 | 1921 | sprintf (buffer, "%d", XINT (number)); |
e6c82a8d | 1922 | else if (sizeof (long) == sizeof (EMACS_INT)) |
d9c2a0f2 | 1923 | sprintf (buffer, "%ld", XINT (number)); |
e6c82a8d RS |
1924 | else |
1925 | abort (); | |
7921925c JB |
1926 | return build_string (buffer); |
1927 | } | |
1928 | ||
3883fbeb RS |
1929 | INLINE static int |
1930 | digit_to_number (character, base) | |
1931 | int character, base; | |
1932 | { | |
1933 | int digit; | |
1934 | ||
1935 | if (character >= '0' && character <= '9') | |
1936 | digit = character - '0'; | |
1937 | else if (character >= 'a' && character <= 'z') | |
1938 | digit = character - 'a' + 10; | |
1939 | else if (character >= 'A' && character <= 'Z') | |
1940 | digit = character - 'A' + 10; | |
1941 | else | |
1942 | return -1; | |
1943 | ||
1944 | if (digit >= base) | |
1945 | return -1; | |
1946 | else | |
1947 | return digit; | |
1948 | } | |
1949 | ||
1950 | DEFUN ("string-to-number", Fstring_to_number, Sstring_to_number, 1, 2, 0, | |
25e40a4b | 1951 | "Convert STRING to a number by parsing it as a decimal number.\n\ |
1c1c17eb | 1952 | This parses both integers and floating point numbers.\n\ |
3883fbeb RS |
1953 | It ignores leading spaces and tabs.\n\ |
1954 | \n\ | |
1955 | If BASE, interpret STRING as a number in that base. If BASE isn't\n\ | |
1956 | present, base 10 is used. BASE must be between 2 and 16 (inclusive).\n\ | |
1957 | Floating point numbers always use base 10.") | |
1958 | (string, base) | |
1959 | register Lisp_Object string, base; | |
7921925c | 1960 | { |
3883fbeb RS |
1961 | register unsigned char *p; |
1962 | register int b, digit, v = 0; | |
1963 | int negative = 1; | |
25e40a4b | 1964 | |
d9c2a0f2 | 1965 | CHECK_STRING (string, 0); |
7921925c | 1966 | |
3883fbeb RS |
1967 | if (NILP (base)) |
1968 | b = 10; | |
1969 | else | |
1970 | { | |
1971 | CHECK_NUMBER (base, 1); | |
1972 | b = XINT (base); | |
1973 | if (b < 2 || b > 16) | |
1974 | Fsignal (Qargs_out_of_range, Fcons (base, Qnil)); | |
1975 | } | |
1976 | ||
d9c2a0f2 | 1977 | p = XSTRING (string)->data; |
25e40a4b JB |
1978 | |
1979 | /* Skip any whitespace at the front of the number. Some versions of | |
1980 | atoi do this anyway, so we might as well make Emacs lisp consistent. */ | |
0a3e4d65 | 1981 | while (*p == ' ' || *p == '\t') |
25e40a4b JB |
1982 | p++; |
1983 | ||
3883fbeb RS |
1984 | if (*p == '-') |
1985 | { | |
1986 | negative = -1; | |
1987 | p++; | |
1988 | } | |
1989 | else if (*p == '+') | |
1990 | p++; | |
1991 | ||
7921925c | 1992 | #ifdef LISP_FLOAT_TYPE |
25e40a4b JB |
1993 | if (isfloat_string (p)) |
1994 | return make_float (atof (p)); | |
7921925c JB |
1995 | #endif /* LISP_FLOAT_TYPE */ |
1996 | ||
3883fbeb RS |
1997 | while (1) |
1998 | { | |
1999 | int digit = digit_to_number (*p++, b); | |
2000 | if (digit < 0) | |
2001 | break; | |
2002 | v = v * b + digit; | |
2003 | } | |
2004 | ||
2005 | return make_number (negative * v); | |
7921925c | 2006 | } |
3883fbeb | 2007 | |
7403b5c8 | 2008 | \f |
7921925c JB |
2009 | enum arithop |
2010 | { Aadd, Asub, Amult, Adiv, Alogand, Alogior, Alogxor, Amax, Amin }; | |
2011 | ||
b06faa91 | 2012 | extern Lisp_Object float_arith_driver (); |
ad8d56b9 | 2013 | extern Lisp_Object fmod_float (); |
b06faa91 | 2014 | |
7921925c | 2015 | Lisp_Object |
87fbf902 | 2016 | arith_driver (code, nargs, args) |
7921925c JB |
2017 | enum arithop code; |
2018 | int nargs; | |
2019 | register Lisp_Object *args; | |
2020 | { | |
2021 | register Lisp_Object val; | |
2022 | register int argnum; | |
5260234d RS |
2023 | register EMACS_INT accum; |
2024 | register EMACS_INT next; | |
7921925c | 2025 | |
0220c518 | 2026 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
2027 | { |
2028 | case Alogior: | |
2029 | case Alogxor: | |
2030 | case Aadd: | |
2031 | case Asub: | |
2032 | accum = 0; break; | |
2033 | case Amult: | |
2034 | accum = 1; break; | |
2035 | case Alogand: | |
2036 | accum = -1; break; | |
2037 | } | |
2038 | ||
2039 | for (argnum = 0; argnum < nargs; argnum++) | |
2040 | { | |
2041 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
2042 | #ifdef LISP_FLOAT_TYPE | |
2043 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
2044 | ||
e9ebc175 | 2045 | if (FLOATP (val)) /* time to do serious math */ |
7921925c JB |
2046 | return (float_arith_driver ((double) accum, argnum, code, |
2047 | nargs, args)); | |
2048 | #else | |
2049 | CHECK_NUMBER_COERCE_MARKER (val, argnum); | |
2050 | #endif /* LISP_FLOAT_TYPE */ | |
2051 | args[argnum] = val; /* runs into a compiler bug. */ | |
2052 | next = XINT (args[argnum]); | |
0220c518 | 2053 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
2054 | { |
2055 | case Aadd: accum += next; break; | |
2056 | case Asub: | |
2057 | if (!argnum && nargs != 1) | |
2058 | next = - next; | |
2059 | accum -= next; | |
2060 | break; | |
2061 | case Amult: accum *= next; break; | |
2062 | case Adiv: | |
2063 | if (!argnum) accum = next; | |
87fbf902 RS |
2064 | else |
2065 | { | |
2066 | if (next == 0) | |
2067 | Fsignal (Qarith_error, Qnil); | |
2068 | accum /= next; | |
2069 | } | |
7921925c JB |
2070 | break; |
2071 | case Alogand: accum &= next; break; | |
2072 | case Alogior: accum |= next; break; | |
2073 | case Alogxor: accum ^= next; break; | |
2074 | case Amax: if (!argnum || next > accum) accum = next; break; | |
2075 | case Amin: if (!argnum || next < accum) accum = next; break; | |
2076 | } | |
2077 | } | |
2078 | ||
f187f1f7 | 2079 | XSETINT (val, accum); |
7921925c JB |
2080 | return val; |
2081 | } | |
2082 | ||
1a2f2d33 KH |
2083 | #undef isnan |
2084 | #define isnan(x) ((x) != (x)) | |
2085 | ||
bc1c9d7e PE |
2086 | #ifdef LISP_FLOAT_TYPE |
2087 | ||
7921925c JB |
2088 | Lisp_Object |
2089 | float_arith_driver (accum, argnum, code, nargs, args) | |
2090 | double accum; | |
2091 | register int argnum; | |
2092 | enum arithop code; | |
2093 | int nargs; | |
2094 | register Lisp_Object *args; | |
2095 | { | |
2096 | register Lisp_Object val; | |
2097 | double next; | |
7403b5c8 | 2098 | |
7921925c JB |
2099 | for (; argnum < nargs; argnum++) |
2100 | { | |
2101 | val = args[argnum]; /* using args[argnum] as argument to CHECK_NUMBER_... */ | |
2102 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (val, argnum); | |
2103 | ||
e9ebc175 | 2104 | if (FLOATP (val)) |
7921925c JB |
2105 | { |
2106 | next = XFLOAT (val)->data; | |
2107 | } | |
2108 | else | |
2109 | { | |
2110 | args[argnum] = val; /* runs into a compiler bug. */ | |
2111 | next = XINT (args[argnum]); | |
2112 | } | |
0220c518 | 2113 | switch (SWITCH_ENUM_CAST (code)) |
7921925c JB |
2114 | { |
2115 | case Aadd: | |
2116 | accum += next; | |
2117 | break; | |
2118 | case Asub: | |
2119 | if (!argnum && nargs != 1) | |
2120 | next = - next; | |
2121 | accum -= next; | |
2122 | break; | |
2123 | case Amult: | |
2124 | accum *= next; | |
2125 | break; | |
2126 | case Adiv: | |
2127 | if (!argnum) | |
2128 | accum = next; | |
2129 | else | |
87fbf902 | 2130 | { |
ad8d56b9 | 2131 | if (! IEEE_FLOATING_POINT && next == 0) |
87fbf902 RS |
2132 | Fsignal (Qarith_error, Qnil); |
2133 | accum /= next; | |
2134 | } | |
7921925c JB |
2135 | break; |
2136 | case Alogand: | |
2137 | case Alogior: | |
2138 | case Alogxor: | |
2139 | return wrong_type_argument (Qinteger_or_marker_p, val); | |
2140 | case Amax: | |
1a2f2d33 | 2141 | if (!argnum || isnan (next) || next > accum) |
7921925c JB |
2142 | accum = next; |
2143 | break; | |
2144 | case Amin: | |
1a2f2d33 | 2145 | if (!argnum || isnan (next) || next < accum) |
7921925c JB |
2146 | accum = next; |
2147 | break; | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | return make_float (accum); | |
2152 | } | |
2153 | #endif /* LISP_FLOAT_TYPE */ | |
2154 | ||
2155 | DEFUN ("+", Fplus, Splus, 0, MANY, 0, | |
2156 | "Return sum of any number of arguments, which are numbers or markers.") | |
2157 | (nargs, args) | |
2158 | int nargs; | |
2159 | Lisp_Object *args; | |
2160 | { | |
2161 | return arith_driver (Aadd, nargs, args); | |
2162 | } | |
2163 | ||
2164 | DEFUN ("-", Fminus, Sminus, 0, MANY, 0, | |
2165 | "Negate number or subtract numbers or markers.\n\ | |
2166 | With one arg, negates it. With more than one arg,\n\ | |
2167 | subtracts all but the first from the first.") | |
2168 | (nargs, args) | |
2169 | int nargs; | |
2170 | Lisp_Object *args; | |
2171 | { | |
2172 | return arith_driver (Asub, nargs, args); | |
2173 | } | |
2174 | ||
2175 | DEFUN ("*", Ftimes, Stimes, 0, MANY, 0, | |
2176 | "Returns product of any number of arguments, which are numbers or markers.") | |
2177 | (nargs, args) | |
2178 | int nargs; | |
2179 | Lisp_Object *args; | |
2180 | { | |
2181 | return arith_driver (Amult, nargs, args); | |
2182 | } | |
2183 | ||
2184 | DEFUN ("/", Fquo, Squo, 2, MANY, 0, | |
2185 | "Returns first argument divided by all the remaining arguments.\n\ | |
2186 | The arguments must be numbers or markers.") | |
2187 | (nargs, args) | |
2188 | int nargs; | |
2189 | Lisp_Object *args; | |
2190 | { | |
2191 | return arith_driver (Adiv, nargs, args); | |
2192 | } | |
2193 | ||
2194 | DEFUN ("%", Frem, Srem, 2, 2, 0, | |
d9c2a0f2 | 2195 | "Returns remainder of X divided by Y.\n\ |
aa29f9b9 | 2196 | Both must be integers or markers.") |
d9c2a0f2 EN |
2197 | (x, y) |
2198 | register Lisp_Object x, y; | |
7921925c JB |
2199 | { |
2200 | Lisp_Object val; | |
2201 | ||
d9c2a0f2 EN |
2202 | CHECK_NUMBER_COERCE_MARKER (x, 0); |
2203 | CHECK_NUMBER_COERCE_MARKER (y, 1); | |
7921925c | 2204 | |
d9c2a0f2 | 2205 | if (XFASTINT (y) == 0) |
87fbf902 RS |
2206 | Fsignal (Qarith_error, Qnil); |
2207 | ||
d9c2a0f2 | 2208 | XSETINT (val, XINT (x) % XINT (y)); |
7921925c JB |
2209 | return val; |
2210 | } | |
2211 | ||
1d66a5fa KH |
2212 | #ifndef HAVE_FMOD |
2213 | double | |
2214 | fmod (f1, f2) | |
2215 | double f1, f2; | |
2216 | { | |
bc1c9d7e PE |
2217 | double r = f1; |
2218 | ||
fa43b1e8 KH |
2219 | if (f2 < 0.0) |
2220 | f2 = -f2; | |
bc1c9d7e PE |
2221 | |
2222 | /* If the magnitude of the result exceeds that of the divisor, or | |
2223 | the sign of the result does not agree with that of the dividend, | |
2224 | iterate with the reduced value. This does not yield a | |
2225 | particularly accurate result, but at least it will be in the | |
2226 | range promised by fmod. */ | |
2227 | do | |
2228 | r -= f2 * floor (r / f2); | |
2229 | while (f2 <= (r < 0 ? -r : r) || ((r < 0) != (f1 < 0) && ! isnan (r))); | |
2230 | ||
2231 | return r; | |
1d66a5fa KH |
2232 | } |
2233 | #endif /* ! HAVE_FMOD */ | |
2234 | ||
44fa9da5 PE |
2235 | DEFUN ("mod", Fmod, Smod, 2, 2, 0, |
2236 | "Returns X modulo Y.\n\ | |
2237 | The result falls between zero (inclusive) and Y (exclusive).\n\ | |
2238 | Both X and Y must be numbers or markers.") | |
d9c2a0f2 EN |
2239 | (x, y) |
2240 | register Lisp_Object x, y; | |
44fa9da5 PE |
2241 | { |
2242 | Lisp_Object val; | |
5260234d | 2243 | EMACS_INT i1, i2; |
44fa9da5 PE |
2244 | |
2245 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 EN |
2246 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (x, 0); |
2247 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (y, 1); | |
44fa9da5 | 2248 | |
d9c2a0f2 | 2249 | if (FLOATP (x) || FLOATP (y)) |
ad8d56b9 PE |
2250 | return fmod_float (x, y); |
2251 | ||
44fa9da5 | 2252 | #else /* not LISP_FLOAT_TYPE */ |
d9c2a0f2 EN |
2253 | CHECK_NUMBER_COERCE_MARKER (x, 0); |
2254 | CHECK_NUMBER_COERCE_MARKER (y, 1); | |
44fa9da5 PE |
2255 | #endif /* not LISP_FLOAT_TYPE */ |
2256 | ||
d9c2a0f2 EN |
2257 | i1 = XINT (x); |
2258 | i2 = XINT (y); | |
44fa9da5 PE |
2259 | |
2260 | if (i2 == 0) | |
2261 | Fsignal (Qarith_error, Qnil); | |
7403b5c8 | 2262 | |
44fa9da5 PE |
2263 | i1 %= i2; |
2264 | ||
2265 | /* If the "remainder" comes out with the wrong sign, fix it. */ | |
04f7ec69 | 2266 | if (i2 < 0 ? i1 > 0 : i1 < 0) |
44fa9da5 PE |
2267 | i1 += i2; |
2268 | ||
f187f1f7 | 2269 | XSETINT (val, i1); |
44fa9da5 PE |
2270 | return val; |
2271 | } | |
2272 | ||
7921925c JB |
2273 | DEFUN ("max", Fmax, Smax, 1, MANY, 0, |
2274 | "Return largest of all the arguments (which must be numbers or markers).\n\ | |
2275 | The value is always a number; markers are converted to numbers.") | |
2276 | (nargs, args) | |
2277 | int nargs; | |
2278 | Lisp_Object *args; | |
2279 | { | |
2280 | return arith_driver (Amax, nargs, args); | |
2281 | } | |
2282 | ||
2283 | DEFUN ("min", Fmin, Smin, 1, MANY, 0, | |
2284 | "Return smallest of all the arguments (which must be numbers or markers).\n\ | |
2285 | The value is always a number; markers are converted to numbers.") | |
2286 | (nargs, args) | |
2287 | int nargs; | |
2288 | Lisp_Object *args; | |
2289 | { | |
2290 | return arith_driver (Amin, nargs, args); | |
2291 | } | |
2292 | ||
2293 | DEFUN ("logand", Flogand, Slogand, 0, MANY, 0, | |
2294 | "Return bitwise-and of all the arguments.\n\ | |
2295 | Arguments may be integers, or markers converted to integers.") | |
2296 | (nargs, args) | |
2297 | int nargs; | |
2298 | Lisp_Object *args; | |
2299 | { | |
2300 | return arith_driver (Alogand, nargs, args); | |
2301 | } | |
2302 | ||
2303 | DEFUN ("logior", Flogior, Slogior, 0, MANY, 0, | |
2304 | "Return bitwise-or of all the arguments.\n\ | |
2305 | Arguments may be integers, or markers converted to integers.") | |
2306 | (nargs, args) | |
2307 | int nargs; | |
2308 | Lisp_Object *args; | |
2309 | { | |
2310 | return arith_driver (Alogior, nargs, args); | |
2311 | } | |
2312 | ||
2313 | DEFUN ("logxor", Flogxor, Slogxor, 0, MANY, 0, | |
2314 | "Return bitwise-exclusive-or of all the arguments.\n\ | |
2315 | Arguments may be integers, or markers converted to integers.") | |
2316 | (nargs, args) | |
2317 | int nargs; | |
2318 | Lisp_Object *args; | |
2319 | { | |
2320 | return arith_driver (Alogxor, nargs, args); | |
2321 | } | |
2322 | ||
2323 | DEFUN ("ash", Fash, Sash, 2, 2, 0, | |
2324 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
2325 | If COUNT is negative, shifting is actually to the right.\n\ | |
2326 | In this case, the sign bit is duplicated.") | |
3b9f7964 RS |
2327 | (value, count) |
2328 | register Lisp_Object value, count; | |
7921925c JB |
2329 | { |
2330 | register Lisp_Object val; | |
2331 | ||
3d9652eb RS |
2332 | CHECK_NUMBER (value, 0); |
2333 | CHECK_NUMBER (count, 1); | |
7921925c | 2334 | |
3d9652eb RS |
2335 | if (XINT (count) > 0) |
2336 | XSETINT (val, XINT (value) << XFASTINT (count)); | |
7921925c | 2337 | else |
3d9652eb | 2338 | XSETINT (val, XINT (value) >> -XINT (count)); |
7921925c JB |
2339 | return val; |
2340 | } | |
2341 | ||
2342 | DEFUN ("lsh", Flsh, Slsh, 2, 2, 0, | |
2343 | "Return VALUE with its bits shifted left by COUNT.\n\ | |
2344 | If COUNT is negative, shifting is actually to the right.\n\ | |
2345 | In this case, zeros are shifted in on the left.") | |
3d9652eb RS |
2346 | (value, count) |
2347 | register Lisp_Object value, count; | |
7921925c JB |
2348 | { |
2349 | register Lisp_Object val; | |
2350 | ||
3d9652eb RS |
2351 | CHECK_NUMBER (value, 0); |
2352 | CHECK_NUMBER (count, 1); | |
7921925c | 2353 | |
3d9652eb RS |
2354 | if (XINT (count) > 0) |
2355 | XSETINT (val, (EMACS_UINT) XUINT (value) << XFASTINT (count)); | |
7921925c | 2356 | else |
3d9652eb | 2357 | XSETINT (val, (EMACS_UINT) XUINT (value) >> -XINT (count)); |
7921925c JB |
2358 | return val; |
2359 | } | |
2360 | ||
2361 | DEFUN ("1+", Fadd1, Sadd1, 1, 1, 0, | |
2362 | "Return NUMBER plus one. NUMBER may be a number or a marker.\n\ | |
2363 | Markers are converted to integers.") | |
d9c2a0f2 EN |
2364 | (number) |
2365 | register Lisp_Object number; | |
7921925c JB |
2366 | { |
2367 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 | 2368 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number, 0); |
7921925c | 2369 | |
d9c2a0f2 EN |
2370 | if (FLOATP (number)) |
2371 | return (make_float (1.0 + XFLOAT (number)->data)); | |
7921925c | 2372 | #else |
d9c2a0f2 | 2373 | CHECK_NUMBER_COERCE_MARKER (number, 0); |
7921925c JB |
2374 | #endif /* LISP_FLOAT_TYPE */ |
2375 | ||
d9c2a0f2 EN |
2376 | XSETINT (number, XINT (number) + 1); |
2377 | return number; | |
7921925c JB |
2378 | } |
2379 | ||
2380 | DEFUN ("1-", Fsub1, Ssub1, 1, 1, 0, | |
2381 | "Return NUMBER minus one. NUMBER may be a number or a marker.\n\ | |
2382 | Markers are converted to integers.") | |
d9c2a0f2 EN |
2383 | (number) |
2384 | register Lisp_Object number; | |
7921925c JB |
2385 | { |
2386 | #ifdef LISP_FLOAT_TYPE | |
d9c2a0f2 | 2387 | CHECK_NUMBER_OR_FLOAT_COERCE_MARKER (number, 0); |
7921925c | 2388 | |
d9c2a0f2 EN |
2389 | if (FLOATP (number)) |
2390 | return (make_float (-1.0 + XFLOAT (number)->data)); | |
7921925c | 2391 | #else |
d9c2a0f2 | 2392 | CHECK_NUMBER_COERCE_MARKER (number, 0); |
7921925c JB |
2393 | #endif /* LISP_FLOAT_TYPE */ |
2394 | ||
d9c2a0f2 EN |
2395 | XSETINT (number, XINT (number) - 1); |
2396 | return number; | |
7921925c JB |
2397 | } |
2398 | ||
2399 | DEFUN ("lognot", Flognot, Slognot, 1, 1, 0, | |
d9c2a0f2 EN |
2400 | "Return the bitwise complement of NUMBER. NUMBER must be an integer.") |
2401 | (number) | |
2402 | register Lisp_Object number; | |
7921925c | 2403 | { |
d9c2a0f2 | 2404 | CHECK_NUMBER (number, 0); |
53924017 | 2405 | XSETINT (number, ~XINT (number)); |
d9c2a0f2 | 2406 | return number; |
7921925c JB |
2407 | } |
2408 | \f | |
2409 | void | |
2410 | syms_of_data () | |
2411 | { | |
6315e761 RS |
2412 | Lisp_Object error_tail, arith_tail; |
2413 | ||
7921925c JB |
2414 | Qquote = intern ("quote"); |
2415 | Qlambda = intern ("lambda"); | |
2416 | Qsubr = intern ("subr"); | |
2417 | Qerror_conditions = intern ("error-conditions"); | |
2418 | Qerror_message = intern ("error-message"); | |
2419 | Qtop_level = intern ("top-level"); | |
2420 | ||
2421 | Qerror = intern ("error"); | |
2422 | Qquit = intern ("quit"); | |
2423 | Qwrong_type_argument = intern ("wrong-type-argument"); | |
2424 | Qargs_out_of_range = intern ("args-out-of-range"); | |
2425 | Qvoid_function = intern ("void-function"); | |
ffd56f97 | 2426 | Qcyclic_function_indirection = intern ("cyclic-function-indirection"); |
7921925c JB |
2427 | Qvoid_variable = intern ("void-variable"); |
2428 | Qsetting_constant = intern ("setting-constant"); | |
2429 | Qinvalid_read_syntax = intern ("invalid-read-syntax"); | |
2430 | ||
2431 | Qinvalid_function = intern ("invalid-function"); | |
2432 | Qwrong_number_of_arguments = intern ("wrong-number-of-arguments"); | |
2433 | Qno_catch = intern ("no-catch"); | |
2434 | Qend_of_file = intern ("end-of-file"); | |
2435 | Qarith_error = intern ("arith-error"); | |
2436 | Qbeginning_of_buffer = intern ("beginning-of-buffer"); | |
2437 | Qend_of_buffer = intern ("end-of-buffer"); | |
2438 | Qbuffer_read_only = intern ("buffer-read-only"); | |
3b8819d6 | 2439 | Qmark_inactive = intern ("mark-inactive"); |
7921925c JB |
2440 | |
2441 | Qlistp = intern ("listp"); | |
2442 | Qconsp = intern ("consp"); | |
2443 | Qsymbolp = intern ("symbolp"); | |
2444 | Qintegerp = intern ("integerp"); | |
2445 | Qnatnump = intern ("natnump"); | |
8e86942b | 2446 | Qwholenump = intern ("wholenump"); |
7921925c JB |
2447 | Qstringp = intern ("stringp"); |
2448 | Qarrayp = intern ("arrayp"); | |
2449 | Qsequencep = intern ("sequencep"); | |
2450 | Qbufferp = intern ("bufferp"); | |
2451 | Qvectorp = intern ("vectorp"); | |
2452 | Qchar_or_string_p = intern ("char-or-string-p"); | |
2453 | Qmarkerp = intern ("markerp"); | |
07bd8472 | 2454 | Qbuffer_or_string_p = intern ("buffer-or-string-p"); |
7921925c JB |
2455 | Qinteger_or_marker_p = intern ("integer-or-marker-p"); |
2456 | Qboundp = intern ("boundp"); | |
2457 | Qfboundp = intern ("fboundp"); | |
2458 | ||
2459 | #ifdef LISP_FLOAT_TYPE | |
2460 | Qfloatp = intern ("floatp"); | |
2461 | Qnumberp = intern ("numberp"); | |
2462 | Qnumber_or_marker_p = intern ("number-or-marker-p"); | |
2463 | #endif /* LISP_FLOAT_TYPE */ | |
2464 | ||
4d276982 | 2465 | Qchar_table_p = intern ("char-table-p"); |
7f0edce7 | 2466 | Qvector_or_char_table_p = intern ("vector-or-char-table-p"); |
4d276982 | 2467 | |
7921925c JB |
2468 | Qcdr = intern ("cdr"); |
2469 | ||
f845f2c9 | 2470 | /* Handle automatic advice activation */ |
ab297811 RS |
2471 | Qad_advice_info = intern ("ad-advice-info"); |
2472 | Qad_activate = intern ("ad-activate"); | |
f845f2c9 | 2473 | |
6315e761 RS |
2474 | error_tail = Fcons (Qerror, Qnil); |
2475 | ||
7921925c JB |
2476 | /* ERROR is used as a signaler for random errors for which nothing else is right */ |
2477 | ||
2478 | Fput (Qerror, Qerror_conditions, | |
6315e761 | 2479 | error_tail); |
7921925c JB |
2480 | Fput (Qerror, Qerror_message, |
2481 | build_string ("error")); | |
2482 | ||
2483 | Fput (Qquit, Qerror_conditions, | |
2484 | Fcons (Qquit, Qnil)); | |
2485 | Fput (Qquit, Qerror_message, | |
2486 | build_string ("Quit")); | |
2487 | ||
2488 | Fput (Qwrong_type_argument, Qerror_conditions, | |
6315e761 | 2489 | Fcons (Qwrong_type_argument, error_tail)); |
7921925c JB |
2490 | Fput (Qwrong_type_argument, Qerror_message, |
2491 | build_string ("Wrong type argument")); | |
2492 | ||
2493 | Fput (Qargs_out_of_range, Qerror_conditions, | |
6315e761 | 2494 | Fcons (Qargs_out_of_range, error_tail)); |
7921925c JB |
2495 | Fput (Qargs_out_of_range, Qerror_message, |
2496 | build_string ("Args out of range")); | |
2497 | ||
2498 | Fput (Qvoid_function, Qerror_conditions, | |
6315e761 | 2499 | Fcons (Qvoid_function, error_tail)); |
7921925c JB |
2500 | Fput (Qvoid_function, Qerror_message, |
2501 | build_string ("Symbol's function definition is void")); | |
2502 | ||
ffd56f97 | 2503 | Fput (Qcyclic_function_indirection, Qerror_conditions, |
6315e761 | 2504 | Fcons (Qcyclic_function_indirection, error_tail)); |
ffd56f97 JB |
2505 | Fput (Qcyclic_function_indirection, Qerror_message, |
2506 | build_string ("Symbol's chain of function indirections contains a loop")); | |
2507 | ||
7921925c | 2508 | Fput (Qvoid_variable, Qerror_conditions, |
6315e761 | 2509 | Fcons (Qvoid_variable, error_tail)); |
7921925c JB |
2510 | Fput (Qvoid_variable, Qerror_message, |
2511 | build_string ("Symbol's value as variable is void")); | |
2512 | ||
2513 | Fput (Qsetting_constant, Qerror_conditions, | |
6315e761 | 2514 | Fcons (Qsetting_constant, error_tail)); |
7921925c JB |
2515 | Fput (Qsetting_constant, Qerror_message, |
2516 | build_string ("Attempt to set a constant symbol")); | |
2517 | ||
2518 | Fput (Qinvalid_read_syntax, Qerror_conditions, | |
6315e761 | 2519 | Fcons (Qinvalid_read_syntax, error_tail)); |
7921925c JB |
2520 | Fput (Qinvalid_read_syntax, Qerror_message, |
2521 | build_string ("Invalid read syntax")); | |
2522 | ||
2523 | Fput (Qinvalid_function, Qerror_conditions, | |
6315e761 | 2524 | Fcons (Qinvalid_function, error_tail)); |
7921925c JB |
2525 | Fput (Qinvalid_function, Qerror_message, |
2526 | build_string ("Invalid function")); | |
2527 | ||
2528 | Fput (Qwrong_number_of_arguments, Qerror_conditions, | |
6315e761 | 2529 | Fcons (Qwrong_number_of_arguments, error_tail)); |
7921925c JB |
2530 | Fput (Qwrong_number_of_arguments, Qerror_message, |
2531 | build_string ("Wrong number of arguments")); | |
2532 | ||
2533 | Fput (Qno_catch, Qerror_conditions, | |
6315e761 | 2534 | Fcons (Qno_catch, error_tail)); |
7921925c JB |
2535 | Fput (Qno_catch, Qerror_message, |
2536 | build_string ("No catch for tag")); | |
2537 | ||
2538 | Fput (Qend_of_file, Qerror_conditions, | |
6315e761 | 2539 | Fcons (Qend_of_file, error_tail)); |
7921925c JB |
2540 | Fput (Qend_of_file, Qerror_message, |
2541 | build_string ("End of file during parsing")); | |
2542 | ||
6315e761 | 2543 | arith_tail = Fcons (Qarith_error, error_tail); |
7921925c | 2544 | Fput (Qarith_error, Qerror_conditions, |
6315e761 | 2545 | arith_tail); |
7921925c JB |
2546 | Fput (Qarith_error, Qerror_message, |
2547 | build_string ("Arithmetic error")); | |
2548 | ||
2549 | Fput (Qbeginning_of_buffer, Qerror_conditions, | |
6315e761 | 2550 | Fcons (Qbeginning_of_buffer, error_tail)); |
7921925c JB |
2551 | Fput (Qbeginning_of_buffer, Qerror_message, |
2552 | build_string ("Beginning of buffer")); | |
2553 | ||
2554 | Fput (Qend_of_buffer, Qerror_conditions, | |
6315e761 | 2555 | Fcons (Qend_of_buffer, error_tail)); |
7921925c JB |
2556 | Fput (Qend_of_buffer, Qerror_message, |
2557 | build_string ("End of buffer")); | |
2558 | ||
2559 | Fput (Qbuffer_read_only, Qerror_conditions, | |
6315e761 | 2560 | Fcons (Qbuffer_read_only, error_tail)); |
7921925c JB |
2561 | Fput (Qbuffer_read_only, Qerror_message, |
2562 | build_string ("Buffer is read-only")); | |
2563 | ||
6315e761 RS |
2564 | #ifdef LISP_FLOAT_TYPE |
2565 | Qrange_error = intern ("range-error"); | |
2566 | Qdomain_error = intern ("domain-error"); | |
2567 | Qsingularity_error = intern ("singularity-error"); | |
2568 | Qoverflow_error = intern ("overflow-error"); | |
2569 | Qunderflow_error = intern ("underflow-error"); | |
2570 | ||
2571 | Fput (Qdomain_error, Qerror_conditions, | |
2572 | Fcons (Qdomain_error, arith_tail)); | |
2573 | Fput (Qdomain_error, Qerror_message, | |
2574 | build_string ("Arithmetic domain error")); | |
2575 | ||
2576 | Fput (Qrange_error, Qerror_conditions, | |
2577 | Fcons (Qrange_error, arith_tail)); | |
2578 | Fput (Qrange_error, Qerror_message, | |
2579 | build_string ("Arithmetic range error")); | |
2580 | ||
2581 | Fput (Qsingularity_error, Qerror_conditions, | |
2582 | Fcons (Qsingularity_error, Fcons (Qdomain_error, arith_tail))); | |
2583 | Fput (Qsingularity_error, Qerror_message, | |
2584 | build_string ("Arithmetic singularity error")); | |
2585 | ||
2586 | Fput (Qoverflow_error, Qerror_conditions, | |
2587 | Fcons (Qoverflow_error, Fcons (Qdomain_error, arith_tail))); | |
2588 | Fput (Qoverflow_error, Qerror_message, | |
2589 | build_string ("Arithmetic overflow error")); | |
2590 | ||
2591 | Fput (Qunderflow_error, Qerror_conditions, | |
2592 | Fcons (Qunderflow_error, Fcons (Qdomain_error, arith_tail))); | |
2593 | Fput (Qunderflow_error, Qerror_message, | |
2594 | build_string ("Arithmetic underflow error")); | |
2595 | ||
2596 | staticpro (&Qrange_error); | |
2597 | staticpro (&Qdomain_error); | |
2598 | staticpro (&Qsingularity_error); | |
2599 | staticpro (&Qoverflow_error); | |
2600 | staticpro (&Qunderflow_error); | |
2601 | #endif /* LISP_FLOAT_TYPE */ | |
2602 | ||
7921925c JB |
2603 | staticpro (&Qnil); |
2604 | staticpro (&Qt); | |
2605 | staticpro (&Qquote); | |
2606 | staticpro (&Qlambda); | |
2607 | staticpro (&Qsubr); | |
2608 | staticpro (&Qunbound); | |
2609 | staticpro (&Qerror_conditions); | |
2610 | staticpro (&Qerror_message); | |
2611 | staticpro (&Qtop_level); | |
2612 | ||
2613 | staticpro (&Qerror); | |
2614 | staticpro (&Qquit); | |
2615 | staticpro (&Qwrong_type_argument); | |
2616 | staticpro (&Qargs_out_of_range); | |
2617 | staticpro (&Qvoid_function); | |
ffd56f97 | 2618 | staticpro (&Qcyclic_function_indirection); |
7921925c JB |
2619 | staticpro (&Qvoid_variable); |
2620 | staticpro (&Qsetting_constant); | |
2621 | staticpro (&Qinvalid_read_syntax); | |
2622 | staticpro (&Qwrong_number_of_arguments); | |
2623 | staticpro (&Qinvalid_function); | |
2624 | staticpro (&Qno_catch); | |
2625 | staticpro (&Qend_of_file); | |
2626 | staticpro (&Qarith_error); | |
2627 | staticpro (&Qbeginning_of_buffer); | |
2628 | staticpro (&Qend_of_buffer); | |
2629 | staticpro (&Qbuffer_read_only); | |
638b77e6 | 2630 | staticpro (&Qmark_inactive); |
7921925c JB |
2631 | |
2632 | staticpro (&Qlistp); | |
2633 | staticpro (&Qconsp); | |
2634 | staticpro (&Qsymbolp); | |
2635 | staticpro (&Qintegerp); | |
2636 | staticpro (&Qnatnump); | |
8e86942b | 2637 | staticpro (&Qwholenump); |
7921925c JB |
2638 | staticpro (&Qstringp); |
2639 | staticpro (&Qarrayp); | |
2640 | staticpro (&Qsequencep); | |
2641 | staticpro (&Qbufferp); | |
2642 | staticpro (&Qvectorp); | |
2643 | staticpro (&Qchar_or_string_p); | |
2644 | staticpro (&Qmarkerp); | |
07bd8472 | 2645 | staticpro (&Qbuffer_or_string_p); |
7921925c JB |
2646 | staticpro (&Qinteger_or_marker_p); |
2647 | #ifdef LISP_FLOAT_TYPE | |
2648 | staticpro (&Qfloatp); | |
464f8898 RS |
2649 | staticpro (&Qnumberp); |
2650 | staticpro (&Qnumber_or_marker_p); | |
7921925c | 2651 | #endif /* LISP_FLOAT_TYPE */ |
4d276982 | 2652 | staticpro (&Qchar_table_p); |
7f0edce7 | 2653 | staticpro (&Qvector_or_char_table_p); |
7921925c JB |
2654 | |
2655 | staticpro (&Qboundp); | |
2656 | staticpro (&Qfboundp); | |
2657 | staticpro (&Qcdr); | |
ab297811 RS |
2658 | staticpro (&Qad_advice_info); |
2659 | staticpro (&Qad_activate); | |
7921925c | 2660 | |
39bcc759 RS |
2661 | /* Types that type-of returns. */ |
2662 | Qinteger = intern ("integer"); | |
2663 | Qsymbol = intern ("symbol"); | |
2664 | Qstring = intern ("string"); | |
2665 | Qcons = intern ("cons"); | |
2666 | Qmarker = intern ("marker"); | |
2667 | Qoverlay = intern ("overlay"); | |
2668 | Qfloat = intern ("float"); | |
2669 | Qwindow_configuration = intern ("window-configuration"); | |
2670 | Qprocess = intern ("process"); | |
2671 | Qwindow = intern ("window"); | |
2672 | /* Qsubr = intern ("subr"); */ | |
2673 | Qcompiled_function = intern ("compiled-function"); | |
2674 | Qbuffer = intern ("buffer"); | |
2675 | Qframe = intern ("frame"); | |
2676 | Qvector = intern ("vector"); | |
fc67d5be KH |
2677 | Qchar_table = intern ("char-table"); |
2678 | Qbool_vector = intern ("bool-vector"); | |
39bcc759 RS |
2679 | |
2680 | staticpro (&Qinteger); | |
2681 | staticpro (&Qsymbol); | |
2682 | staticpro (&Qstring); | |
2683 | staticpro (&Qcons); | |
2684 | staticpro (&Qmarker); | |
2685 | staticpro (&Qoverlay); | |
2686 | staticpro (&Qfloat); | |
2687 | staticpro (&Qwindow_configuration); | |
2688 | staticpro (&Qprocess); | |
2689 | staticpro (&Qwindow); | |
2690 | /* staticpro (&Qsubr); */ | |
2691 | staticpro (&Qcompiled_function); | |
2692 | staticpro (&Qbuffer); | |
2693 | staticpro (&Qframe); | |
2694 | staticpro (&Qvector); | |
fc67d5be KH |
2695 | staticpro (&Qchar_table); |
2696 | staticpro (&Qbool_vector); | |
39bcc759 | 2697 | |
7921925c JB |
2698 | defsubr (&Seq); |
2699 | defsubr (&Snull); | |
39bcc759 | 2700 | defsubr (&Stype_of); |
7921925c JB |
2701 | defsubr (&Slistp); |
2702 | defsubr (&Snlistp); | |
2703 | defsubr (&Sconsp); | |
2704 | defsubr (&Satom); | |
2705 | defsubr (&Sintegerp); | |
464f8898 | 2706 | defsubr (&Sinteger_or_marker_p); |
7921925c JB |
2707 | defsubr (&Snumberp); |
2708 | defsubr (&Snumber_or_marker_p); | |
464f8898 RS |
2709 | #ifdef LISP_FLOAT_TYPE |
2710 | defsubr (&Sfloatp); | |
7921925c JB |
2711 | #endif /* LISP_FLOAT_TYPE */ |
2712 | defsubr (&Snatnump); | |
2713 | defsubr (&Ssymbolp); | |
2714 | defsubr (&Sstringp); | |
2715 | defsubr (&Svectorp); | |
4d276982 | 2716 | defsubr (&Schar_table_p); |
7f0edce7 | 2717 | defsubr (&Svector_or_char_table_p); |
4d276982 | 2718 | defsubr (&Sbool_vector_p); |
7921925c JB |
2719 | defsubr (&Sarrayp); |
2720 | defsubr (&Ssequencep); | |
2721 | defsubr (&Sbufferp); | |
2722 | defsubr (&Smarkerp); | |
7921925c | 2723 | defsubr (&Ssubrp); |
dbc4e1c1 | 2724 | defsubr (&Sbyte_code_function_p); |
7921925c JB |
2725 | defsubr (&Schar_or_string_p); |
2726 | defsubr (&Scar); | |
2727 | defsubr (&Scdr); | |
2728 | defsubr (&Scar_safe); | |
2729 | defsubr (&Scdr_safe); | |
2730 | defsubr (&Ssetcar); | |
2731 | defsubr (&Ssetcdr); | |
2732 | defsubr (&Ssymbol_function); | |
ffd56f97 | 2733 | defsubr (&Sindirect_function); |
7921925c JB |
2734 | defsubr (&Ssymbol_plist); |
2735 | defsubr (&Ssymbol_name); | |
2736 | defsubr (&Smakunbound); | |
2737 | defsubr (&Sfmakunbound); | |
2738 | defsubr (&Sboundp); | |
2739 | defsubr (&Sfboundp); | |
2740 | defsubr (&Sfset); | |
80df38a2 | 2741 | defsubr (&Sdefalias); |
7921925c JB |
2742 | defsubr (&Ssetplist); |
2743 | defsubr (&Ssymbol_value); | |
2744 | defsubr (&Sset); | |
2745 | defsubr (&Sdefault_boundp); | |
2746 | defsubr (&Sdefault_value); | |
2747 | defsubr (&Sset_default); | |
2748 | defsubr (&Ssetq_default); | |
2749 | defsubr (&Smake_variable_buffer_local); | |
2750 | defsubr (&Smake_local_variable); | |
2751 | defsubr (&Skill_local_variable); | |
62476adc | 2752 | defsubr (&Slocal_variable_p); |
f4f04cee | 2753 | defsubr (&Slocal_variable_if_set_p); |
7921925c JB |
2754 | defsubr (&Saref); |
2755 | defsubr (&Saset); | |
f2980264 | 2756 | defsubr (&Snumber_to_string); |
25e40a4b | 2757 | defsubr (&Sstring_to_number); |
7921925c JB |
2758 | defsubr (&Seqlsign); |
2759 | defsubr (&Slss); | |
2760 | defsubr (&Sgtr); | |
2761 | defsubr (&Sleq); | |
2762 | defsubr (&Sgeq); | |
2763 | defsubr (&Sneq); | |
2764 | defsubr (&Szerop); | |
2765 | defsubr (&Splus); | |
2766 | defsubr (&Sminus); | |
2767 | defsubr (&Stimes); | |
2768 | defsubr (&Squo); | |
2769 | defsubr (&Srem); | |
44fa9da5 | 2770 | defsubr (&Smod); |
7921925c JB |
2771 | defsubr (&Smax); |
2772 | defsubr (&Smin); | |
2773 | defsubr (&Slogand); | |
2774 | defsubr (&Slogior); | |
2775 | defsubr (&Slogxor); | |
2776 | defsubr (&Slsh); | |
2777 | defsubr (&Sash); | |
2778 | defsubr (&Sadd1); | |
2779 | defsubr (&Ssub1); | |
2780 | defsubr (&Slognot); | |
8e86942b | 2781 | |
c80bd143 | 2782 | XSYMBOL (Qwholenump)->function = XSYMBOL (Qnatnump)->function; |
7921925c JB |
2783 | } |
2784 | ||
a33ef3ab | 2785 | SIGTYPE |
7921925c JB |
2786 | arith_error (signo) |
2787 | int signo; | |
2788 | { | |
fe42a920 | 2789 | #if defined(USG) && !defined(POSIX_SIGNALS) |
7921925c JB |
2790 | /* USG systems forget handlers when they are used; |
2791 | must reestablish each time */ | |
2792 | signal (signo, arith_error); | |
2793 | #endif /* USG */ | |
2794 | #ifdef VMS | |
2795 | /* VMS systems are like USG. */ | |
2796 | signal (signo, arith_error); | |
2797 | #endif /* VMS */ | |
2798 | #ifdef BSD4_1 | |
2799 | sigrelse (SIGFPE); | |
2800 | #else /* not BSD4_1 */ | |
e065a56e | 2801 | sigsetmask (SIGEMPTYMASK); |
7921925c JB |
2802 | #endif /* not BSD4_1 */ |
2803 | ||
2804 | Fsignal (Qarith_error, Qnil); | |
2805 | } | |
2806 | ||
2807 | init_data () | |
2808 | { | |
2809 | /* Don't do this if just dumping out. | |
2810 | We don't want to call `signal' in this case | |
2811 | so that we don't have trouble with dumping | |
2812 | signal-delivering routines in an inconsistent state. */ | |
2813 | #ifndef CANNOT_DUMP | |
2814 | if (!initialized) | |
2815 | return; | |
2816 | #endif /* CANNOT_DUMP */ | |
2817 | signal (SIGFPE, arith_error); | |
7403b5c8 | 2818 | |
7921925c JB |
2819 | #ifdef uts |
2820 | signal (SIGEMT, arith_error); | |
2821 | #endif /* uts */ | |
2822 | } |