Commit | Line | Data |
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b70021f4 | 1 | /* Primitive operations on floating point for GNU Emacs Lisp interpreter. |
3a22ee35 | 2 | Copyright (C) 1988, 1993, 1994 Free Software Foundation, Inc. |
b70021f4 MR |
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 | |
4746118a | 8 | the Free Software Foundation; either version 2, or (at your option) |
b70021f4 MR |
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. */ | |
b70021f4 MR |
20 | |
21 | ||
4b6baf5f RS |
22 | /* ANSI C requires only these float functions: |
23 | acos, asin, atan, atan2, ceil, cos, cosh, exp, fabs, floor, fmod, | |
24 | frexp, ldexp, log, log10, modf, pow, sin, sinh, sqrt, tan, tanh. | |
25 | ||
26 | Define HAVE_INVERSE_HYPERBOLIC if you have acosh, asinh, and atanh. | |
27 | Define HAVE_CBRT if you have cbrt. | |
28 | Define HAVE_RINT if you have rint. | |
29 | If you don't define these, then the appropriate routines will be simulated. | |
30 | ||
31 | Define HAVE_MATHERR if on a system supporting the SysV matherr callback. | |
32 | (This should happen automatically.) | |
33 | ||
34 | Define FLOAT_CHECK_ERRNO if the float library routines set errno. | |
35 | This has no effect if HAVE_MATHERR is defined. | |
36 | ||
37 | Define FLOAT_CATCH_SIGILL if the float library routines signal SIGILL. | |
38 | (What systems actually do this? Please let us know.) | |
39 | ||
40 | Define FLOAT_CHECK_DOMAIN if the float library doesn't handle errors by | |
8e6208c5 | 41 | either setting errno, or signaling SIGFPE/SIGILL. Otherwise, domain and |
4b6baf5f RS |
42 | range checking will happen before calling the float routines. This has |
43 | no effect if HAVE_MATHERR is defined (since matherr will be called when | |
44 | a domain error occurs.) | |
45 | */ | |
46 | ||
b70021f4 MR |
47 | #include <signal.h> |
48 | ||
18160b98 | 49 | #include <config.h> |
265a9e55 | 50 | |
523e9291 | 51 | /* Put this before lisp.h so that lisp.h can define DBL_DIG if not defined. */ |
d137ae2f PE |
52 | #if STDC_HEADERS |
53 | #include <float.h> | |
54 | #endif | |
55 | ||
523e9291 RS |
56 | #include "lisp.h" |
57 | #include "syssignal.h" | |
58 | ||
59 | #ifdef LISP_FLOAT_TYPE | |
60 | ||
d137ae2f PE |
61 | /* If IEEE_FLOATING_POINT isn't defined, default it from FLT_*. */ |
62 | #ifndef IEEE_FLOATING_POINT | |
63 | #if (FLT_RADIX == 2 && FLT_MANT_DIG == 24 \ | |
64 | && FLT_MIN_EXP == -125 && FLT_MAX_EXP == 128) | |
65 | #define IEEE_FLOATING_POINT 1 | |
66 | #else | |
67 | #define IEEE_FLOATING_POINT 0 | |
68 | #endif | |
69 | #endif | |
70 | ||
4cd7a373 RS |
71 | /* Work around a problem that happens because math.h on hpux 7 |
72 | defines two static variables--which, in Emacs, are not really static, | |
73 | because `static' is defined as nothing. The problem is that they are | |
74 | defined both here and in lread.c. | |
75 | These macros prevent the name conflict. */ | |
76 | #if defined (HPUX) && !defined (HPUX8) | |
77 | #define _MAXLDBL floatfns_maxldbl | |
78 | #define _NMAXLDBL floatfns_nmaxldbl | |
79 | #endif | |
80 | ||
b70021f4 | 81 | #include <math.h> |
4b6baf5f | 82 | |
32085e8e | 83 | /* This declaration is omitted on some systems, like Ultrix. */ |
7a4720e2 | 84 | #if !defined (HPUX) && defined (HAVE_LOGB) && !defined (logb) |
c26406fe | 85 | extern double logb (); |
7a4720e2 | 86 | #endif /* not HPUX and HAVE_LOGB and no logb macro */ |
c26406fe | 87 | |
4b6baf5f RS |
88 | #if defined(DOMAIN) && defined(SING) && defined(OVERFLOW) |
89 | /* If those are defined, then this is probably a `matherr' machine. */ | |
90 | # ifndef HAVE_MATHERR | |
91 | # define HAVE_MATHERR | |
92 | # endif | |
93 | #endif | |
94 | ||
c0f0a4a2 | 95 | #ifdef NO_MATHERR |
f89182a2 RS |
96 | #undef HAVE_MATHERR |
97 | #endif | |
98 | ||
4b6baf5f RS |
99 | #ifdef HAVE_MATHERR |
100 | # ifdef FLOAT_CHECK_ERRNO | |
101 | # undef FLOAT_CHECK_ERRNO | |
102 | # endif | |
103 | # ifdef FLOAT_CHECK_DOMAIN | |
104 | # undef FLOAT_CHECK_DOMAIN | |
105 | # endif | |
106 | #endif | |
107 | ||
108 | #ifndef NO_FLOAT_CHECK_ERRNO | |
109 | #define FLOAT_CHECK_ERRNO | |
110 | #endif | |
111 | ||
112 | #ifdef FLOAT_CHECK_ERRNO | |
113 | # include <errno.h> | |
265a9e55 JB |
114 | |
115 | extern int errno; | |
4b6baf5f | 116 | #endif |
265a9e55 JB |
117 | |
118 | /* Avoid traps on VMS from sinh and cosh. | |
119 | All the other functions set errno instead. */ | |
120 | ||
121 | #ifdef VMS | |
122 | #undef cosh | |
123 | #undef sinh | |
124 | #define cosh(x) ((exp(x)+exp(-x))*0.5) | |
125 | #define sinh(x) ((exp(x)-exp(-x))*0.5) | |
126 | #endif /* VMS */ | |
127 | ||
4746118a | 128 | static SIGTYPE float_error (); |
b70021f4 MR |
129 | |
130 | /* Nonzero while executing in floating point. | |
131 | This tells float_error what to do. */ | |
132 | ||
133 | static int in_float; | |
134 | ||
135 | /* If an argument is out of range for a mathematical function, | |
21876236 RS |
136 | here is the actual argument value to use in the error message. |
137 | These variables are used only across the floating point library call | |
138 | so there is no need to staticpro them. */ | |
b70021f4 | 139 | |
4b6baf5f RS |
140 | static Lisp_Object float_error_arg, float_error_arg2; |
141 | ||
142 | static char *float_error_fn_name; | |
b70021f4 | 143 | |
265a9e55 JB |
144 | /* Evaluate the floating point expression D, recording NUM |
145 | as the original argument for error messages. | |
146 | D is normally an assignment expression. | |
f8d83099 JB |
147 | Handle errors which may result in signals or may set errno. |
148 | ||
149 | Note that float_error may be declared to return void, so you can't | |
150 | just cast the zero after the colon to (SIGTYPE) to make the types | |
151 | check properly. */ | |
265a9e55 | 152 | |
4b6baf5f RS |
153 | #ifdef FLOAT_CHECK_ERRNO |
154 | #define IN_FLOAT(d, name, num) \ | |
155 | do { \ | |
156 | float_error_arg = num; \ | |
157 | float_error_fn_name = name; \ | |
158 | in_float = 1; errno = 0; (d); in_float = 0; \ | |
159 | switch (errno) { \ | |
160 | case 0: break; \ | |
161 | case EDOM: domain_error (float_error_fn_name, float_error_arg); \ | |
162 | case ERANGE: range_error (float_error_fn_name, float_error_arg); \ | |
163 | default: arith_error (float_error_fn_name, float_error_arg); \ | |
164 | } \ | |
165 | } while (0) | |
166 | #define IN_FLOAT2(d, name, num, num2) \ | |
167 | do { \ | |
168 | float_error_arg = num; \ | |
169 | float_error_arg2 = num2; \ | |
170 | float_error_fn_name = name; \ | |
171 | in_float = 1; errno = 0; (d); in_float = 0; \ | |
172 | switch (errno) { \ | |
173 | case 0: break; \ | |
174 | case EDOM: domain_error (float_error_fn_name, float_error_arg); \ | |
175 | case ERANGE: range_error (float_error_fn_name, float_error_arg); \ | |
176 | default: arith_error (float_error_fn_name, float_error_arg); \ | |
177 | } \ | |
178 | } while (0) | |
179 | #else | |
f8131ed2 | 180 | #define IN_FLOAT(d, name, num) (in_float = 1, (d), in_float = 0) |
4b6baf5f RS |
181 | #define IN_FLOAT2(d, name, num, num2) (in_float = 1, (d), in_float = 0) |
182 | #endif | |
183 | ||
81a63ccc KH |
184 | /* Convert float to Lisp_Int if it fits, else signal a range error |
185 | using the given arguments. */ | |
186 | #define FLOAT_TO_INT(x, i, name, num) \ | |
187 | do \ | |
188 | { \ | |
7936dcdb RS |
189 | if ((x) >= (((EMACS_INT) 1) << (VALBITS-1)) || \ |
190 | (x) <= - (((EMACS_INT) 1) << (VALBITS-1)) - 1) \ | |
81a63ccc | 191 | range_error (name, num); \ |
e0cb2a68 | 192 | XSETINT (i, (EMACS_INT)(x)); \ |
81a63ccc KH |
193 | } \ |
194 | while (0) | |
195 | #define FLOAT_TO_INT2(x, i, name, num1, num2) \ | |
196 | do \ | |
197 | { \ | |
7936dcdb RS |
198 | if ((x) >= (((EMACS_INT) 1) << (VALBITS-1)) || \ |
199 | (x) <= - (((EMACS_INT) 1) << (VALBITS-1)) - 1) \ | |
81a63ccc | 200 | range_error2 (name, num1, num2); \ |
e0cb2a68 | 201 | XSETINT (i, (EMACS_INT)(x)); \ |
81a63ccc KH |
202 | } \ |
203 | while (0) | |
204 | ||
4b6baf5f RS |
205 | #define arith_error(op,arg) \ |
206 | Fsignal (Qarith_error, Fcons (build_string ((op)), Fcons ((arg), Qnil))) | |
207 | #define range_error(op,arg) \ | |
208 | Fsignal (Qrange_error, Fcons (build_string ((op)), Fcons ((arg), Qnil))) | |
81a63ccc KH |
209 | #define range_error2(op,a1,a2) \ |
210 | Fsignal (Qrange_error, Fcons (build_string ((op)), \ | |
211 | Fcons ((a1), Fcons ((a2), Qnil)))) | |
4b6baf5f RS |
212 | #define domain_error(op,arg) \ |
213 | Fsignal (Qdomain_error, Fcons (build_string ((op)), Fcons ((arg), Qnil))) | |
214 | #define domain_error2(op,a1,a2) \ | |
81a63ccc KH |
215 | Fsignal (Qdomain_error, Fcons (build_string ((op)), \ |
216 | Fcons ((a1), Fcons ((a2), Qnil)))) | |
b70021f4 MR |
217 | |
218 | /* Extract a Lisp number as a `double', or signal an error. */ | |
219 | ||
220 | double | |
221 | extract_float (num) | |
222 | Lisp_Object num; | |
223 | { | |
224 | CHECK_NUMBER_OR_FLOAT (num, 0); | |
225 | ||
207a45c1 | 226 | if (FLOATP (num)) |
b70021f4 MR |
227 | return XFLOAT (num)->data; |
228 | return (double) XINT (num); | |
229 | } | |
c2d4ea74 RS |
230 | \f |
231 | /* Trig functions. */ | |
b70021f4 MR |
232 | |
233 | DEFUN ("acos", Facos, Sacos, 1, 1, 0, | |
234 | "Return the inverse cosine of ARG.") | |
4b6baf5f RS |
235 | (arg) |
236 | register Lisp_Object arg; | |
b70021f4 | 237 | { |
4b6baf5f RS |
238 | double d = extract_float (arg); |
239 | #ifdef FLOAT_CHECK_DOMAIN | |
240 | if (d > 1.0 || d < -1.0) | |
241 | domain_error ("acos", arg); | |
242 | #endif | |
243 | IN_FLOAT (d = acos (d), "acos", arg); | |
b70021f4 MR |
244 | return make_float (d); |
245 | } | |
246 | ||
c2d4ea74 RS |
247 | DEFUN ("asin", Fasin, Sasin, 1, 1, 0, |
248 | "Return the inverse sine of ARG.") | |
4b6baf5f RS |
249 | (arg) |
250 | register Lisp_Object arg; | |
b70021f4 | 251 | { |
4b6baf5f RS |
252 | double d = extract_float (arg); |
253 | #ifdef FLOAT_CHECK_DOMAIN | |
254 | if (d > 1.0 || d < -1.0) | |
255 | domain_error ("asin", arg); | |
256 | #endif | |
257 | IN_FLOAT (d = asin (d), "asin", arg); | |
b70021f4 MR |
258 | return make_float (d); |
259 | } | |
260 | ||
c2d4ea74 RS |
261 | DEFUN ("atan", Fatan, Satan, 1, 1, 0, |
262 | "Return the inverse tangent of ARG.") | |
4b6baf5f RS |
263 | (arg) |
264 | register Lisp_Object arg; | |
b70021f4 | 265 | { |
4b6baf5f RS |
266 | double d = extract_float (arg); |
267 | IN_FLOAT (d = atan (d), "atan", arg); | |
b70021f4 MR |
268 | return make_float (d); |
269 | } | |
270 | ||
c2d4ea74 RS |
271 | DEFUN ("cos", Fcos, Scos, 1, 1, 0, |
272 | "Return the cosine of ARG.") | |
4b6baf5f RS |
273 | (arg) |
274 | register Lisp_Object arg; | |
b70021f4 | 275 | { |
4b6baf5f RS |
276 | double d = extract_float (arg); |
277 | IN_FLOAT (d = cos (d), "cos", arg); | |
b70021f4 MR |
278 | return make_float (d); |
279 | } | |
280 | ||
c2d4ea74 RS |
281 | DEFUN ("sin", Fsin, Ssin, 1, 1, 0, |
282 | "Return the sine of ARG.") | |
4b6baf5f RS |
283 | (arg) |
284 | register Lisp_Object arg; | |
b70021f4 | 285 | { |
4b6baf5f RS |
286 | double d = extract_float (arg); |
287 | IN_FLOAT (d = sin (d), "sin", arg); | |
b70021f4 MR |
288 | return make_float (d); |
289 | } | |
290 | ||
c2d4ea74 RS |
291 | DEFUN ("tan", Ftan, Stan, 1, 1, 0, |
292 | "Return the tangent of ARG.") | |
4b6baf5f RS |
293 | (arg) |
294 | register Lisp_Object arg; | |
295 | { | |
296 | double d = extract_float (arg); | |
297 | double c = cos (d); | |
298 | #ifdef FLOAT_CHECK_DOMAIN | |
299 | if (c == 0.0) | |
300 | domain_error ("tan", arg); | |
301 | #endif | |
302 | IN_FLOAT (d = sin (d) / c, "tan", arg); | |
b70021f4 MR |
303 | return make_float (d); |
304 | } | |
305 | \f | |
c2d4ea74 RS |
306 | #if 0 /* Leave these out unless we find there's a reason for them. */ |
307 | ||
b70021f4 MR |
308 | DEFUN ("bessel-j0", Fbessel_j0, Sbessel_j0, 1, 1, 0, |
309 | "Return the bessel function j0 of ARG.") | |
4b6baf5f RS |
310 | (arg) |
311 | register Lisp_Object arg; | |
b70021f4 | 312 | { |
4b6baf5f RS |
313 | double d = extract_float (arg); |
314 | IN_FLOAT (d = j0 (d), "bessel-j0", arg); | |
b70021f4 MR |
315 | return make_float (d); |
316 | } | |
317 | ||
318 | DEFUN ("bessel-j1", Fbessel_j1, Sbessel_j1, 1, 1, 0, | |
319 | "Return the bessel function j1 of ARG.") | |
4b6baf5f RS |
320 | (arg) |
321 | register Lisp_Object arg; | |
b70021f4 | 322 | { |
4b6baf5f RS |
323 | double d = extract_float (arg); |
324 | IN_FLOAT (d = j1 (d), "bessel-j1", arg); | |
b70021f4 MR |
325 | return make_float (d); |
326 | } | |
327 | ||
328 | DEFUN ("bessel-jn", Fbessel_jn, Sbessel_jn, 2, 2, 0, | |
329 | "Return the order N bessel function output jn of ARG.\n\ | |
330 | The first arg (the order) is truncated to an integer.") | |
3e670702 EN |
331 | (n, arg) |
332 | register Lisp_Object n, arg; | |
b70021f4 | 333 | { |
3e670702 EN |
334 | int i1 = extract_float (n); |
335 | double f2 = extract_float (arg); | |
b70021f4 | 336 | |
3e670702 | 337 | IN_FLOAT (f2 = jn (i1, f2), "bessel-jn", n); |
b70021f4 MR |
338 | return make_float (f2); |
339 | } | |
340 | ||
341 | DEFUN ("bessel-y0", Fbessel_y0, Sbessel_y0, 1, 1, 0, | |
342 | "Return the bessel function y0 of ARG.") | |
4b6baf5f RS |
343 | (arg) |
344 | register Lisp_Object arg; | |
b70021f4 | 345 | { |
4b6baf5f RS |
346 | double d = extract_float (arg); |
347 | IN_FLOAT (d = y0 (d), "bessel-y0", arg); | |
b70021f4 MR |
348 | return make_float (d); |
349 | } | |
350 | ||
351 | DEFUN ("bessel-y1", Fbessel_y1, Sbessel_y1, 1, 1, 0, | |
352 | "Return the bessel function y1 of ARG.") | |
4b6baf5f RS |
353 | (arg) |
354 | register Lisp_Object arg; | |
b70021f4 | 355 | { |
4b6baf5f RS |
356 | double d = extract_float (arg); |
357 | IN_FLOAT (d = y1 (d), "bessel-y0", arg); | |
b70021f4 MR |
358 | return make_float (d); |
359 | } | |
360 | ||
361 | DEFUN ("bessel-yn", Fbessel_yn, Sbessel_yn, 2, 2, 0, | |
362 | "Return the order N bessel function output yn of ARG.\n\ | |
363 | The first arg (the order) is truncated to an integer.") | |
3e670702 EN |
364 | (n, arg) |
365 | register Lisp_Object n, arg; | |
b70021f4 | 366 | { |
3e670702 EN |
367 | int i1 = extract_float (n); |
368 | double f2 = extract_float (arg); | |
b70021f4 | 369 | |
3e670702 | 370 | IN_FLOAT (f2 = yn (i1, f2), "bessel-yn", n); |
b70021f4 MR |
371 | return make_float (f2); |
372 | } | |
b70021f4 | 373 | |
c2d4ea74 RS |
374 | #endif |
375 | \f | |
376 | #if 0 /* Leave these out unless we see they are worth having. */ | |
b70021f4 MR |
377 | |
378 | DEFUN ("erf", Ferf, Serf, 1, 1, 0, | |
379 | "Return the mathematical error function of ARG.") | |
4b6baf5f RS |
380 | (arg) |
381 | register Lisp_Object arg; | |
b70021f4 | 382 | { |
4b6baf5f RS |
383 | double d = extract_float (arg); |
384 | IN_FLOAT (d = erf (d), "erf", arg); | |
b70021f4 MR |
385 | return make_float (d); |
386 | } | |
387 | ||
388 | DEFUN ("erfc", Ferfc, Serfc, 1, 1, 0, | |
389 | "Return the complementary error function of ARG.") | |
4b6baf5f RS |
390 | (arg) |
391 | register Lisp_Object arg; | |
b70021f4 | 392 | { |
4b6baf5f RS |
393 | double d = extract_float (arg); |
394 | IN_FLOAT (d = erfc (d), "erfc", arg); | |
b70021f4 MR |
395 | return make_float (d); |
396 | } | |
397 | ||
b70021f4 MR |
398 | DEFUN ("log-gamma", Flog_gamma, Slog_gamma, 1, 1, 0, |
399 | "Return the log gamma of ARG.") | |
4b6baf5f RS |
400 | (arg) |
401 | register Lisp_Object arg; | |
b70021f4 | 402 | { |
4b6baf5f RS |
403 | double d = extract_float (arg); |
404 | IN_FLOAT (d = lgamma (d), "log-gamma", arg); | |
b70021f4 MR |
405 | return make_float (d); |
406 | } | |
407 | ||
4b6baf5f | 408 | DEFUN ("cube-root", Fcube_root, Scube_root, 1, 1, 0, |
c2d4ea74 | 409 | "Return the cube root of ARG.") |
4b6baf5f RS |
410 | (arg) |
411 | register Lisp_Object arg; | |
b70021f4 | 412 | { |
4b6baf5f RS |
413 | double d = extract_float (arg); |
414 | #ifdef HAVE_CBRT | |
415 | IN_FLOAT (d = cbrt (d), "cube-root", arg); | |
416 | #else | |
417 | if (d >= 0.0) | |
418 | IN_FLOAT (d = pow (d, 1.0/3.0), "cube-root", arg); | |
419 | else | |
420 | IN_FLOAT (d = -pow (-d, 1.0/3.0), "cube-root", arg); | |
421 | #endif | |
b70021f4 MR |
422 | return make_float (d); |
423 | } | |
424 | ||
706ac90d RS |
425 | #endif |
426 | \f | |
c2d4ea74 RS |
427 | DEFUN ("exp", Fexp, Sexp, 1, 1, 0, |
428 | "Return the exponential base e of ARG.") | |
4b6baf5f RS |
429 | (arg) |
430 | register Lisp_Object arg; | |
431 | { | |
432 | double d = extract_float (arg); | |
433 | #ifdef FLOAT_CHECK_DOMAIN | |
434 | if (d > 709.7827) /* Assume IEEE doubles here */ | |
435 | range_error ("exp", arg); | |
436 | else if (d < -709.0) | |
437 | return make_float (0.0); | |
438 | else | |
439 | #endif | |
440 | IN_FLOAT (d = exp (d), "exp", arg); | |
b70021f4 MR |
441 | return make_float (d); |
442 | } | |
443 | ||
b70021f4 | 444 | DEFUN ("expt", Fexpt, Sexpt, 2, 2, 0, |
4fd72a6a | 445 | "Return the exponential ARG1 ** ARG2.") |
4b6baf5f RS |
446 | (arg1, arg2) |
447 | register Lisp_Object arg1, arg2; | |
b70021f4 MR |
448 | { |
449 | double f1, f2; | |
450 | ||
4b6baf5f RS |
451 | CHECK_NUMBER_OR_FLOAT (arg1, 0); |
452 | CHECK_NUMBER_OR_FLOAT (arg2, 0); | |
207a45c1 KH |
453 | if (INTEGERP (arg1) /* common lisp spec */ |
454 | && INTEGERP (arg2)) /* don't promote, if both are ints */ | |
b70021f4 | 455 | { /* this can be improved by pre-calculating */ |
9a51b24a | 456 | EMACS_INT acc, x, y; /* some binary powers of x then accumulating */ |
4be1d460 RS |
457 | Lisp_Object val; |
458 | ||
4b6baf5f RS |
459 | x = XINT (arg1); |
460 | y = XINT (arg2); | |
b70021f4 MR |
461 | acc = 1; |
462 | ||
463 | if (y < 0) | |
464 | { | |
4b6baf5f RS |
465 | if (x == 1) |
466 | acc = 1; | |
467 | else if (x == -1) | |
468 | acc = (y & 1) ? -1 : 1; | |
469 | else | |
470 | acc = 0; | |
b70021f4 MR |
471 | } |
472 | else | |
473 | { | |
4b6baf5f RS |
474 | while (y > 0) |
475 | { | |
476 | if (y & 1) | |
477 | acc *= x; | |
478 | x *= x; | |
479 | y = (unsigned)y >> 1; | |
480 | } | |
b70021f4 | 481 | } |
e0cb2a68 | 482 | XSETINT (val, acc); |
4be1d460 | 483 | return val; |
b70021f4 | 484 | } |
207a45c1 KH |
485 | f1 = FLOATP (arg1) ? XFLOAT (arg1)->data : XINT (arg1); |
486 | f2 = FLOATP (arg2) ? XFLOAT (arg2)->data : XINT (arg2); | |
4b6baf5f RS |
487 | /* Really should check for overflow, too */ |
488 | if (f1 == 0.0 && f2 == 0.0) | |
489 | f1 = 1.0; | |
490 | #ifdef FLOAT_CHECK_DOMAIN | |
491 | else if ((f1 == 0.0 && f2 < 0.0) || (f1 < 0 && f2 != floor(f2))) | |
492 | domain_error2 ("expt", arg1, arg2); | |
493 | #endif | |
28d849db | 494 | IN_FLOAT2 (f1 = pow (f1, f2), "expt", arg1, arg2); |
b70021f4 MR |
495 | return make_float (f1); |
496 | } | |
c2d4ea74 | 497 | |
56abb480 | 498 | DEFUN ("log", Flog, Slog, 1, 2, 0, |
4b6baf5f RS |
499 | "Return the natural logarithm of ARG.\n\ |
500 | If second optional argument BASE is given, return log ARG using that base.") | |
501 | (arg, base) | |
502 | register Lisp_Object arg, base; | |
b70021f4 | 503 | { |
4b6baf5f | 504 | double d = extract_float (arg); |
56abb480 | 505 | |
4b6baf5f RS |
506 | #ifdef FLOAT_CHECK_DOMAIN |
507 | if (d <= 0.0) | |
508 | domain_error2 ("log", arg, base); | |
509 | #endif | |
56abb480 | 510 | if (NILP (base)) |
4b6baf5f | 511 | IN_FLOAT (d = log (d), "log", arg); |
56abb480 JB |
512 | else |
513 | { | |
514 | double b = extract_float (base); | |
515 | ||
4b6baf5f RS |
516 | #ifdef FLOAT_CHECK_DOMAIN |
517 | if (b <= 0.0 || b == 1.0) | |
518 | domain_error2 ("log", arg, base); | |
519 | #endif | |
520 | if (b == 10.0) | |
521 | IN_FLOAT2 (d = log10 (d), "log", arg, base); | |
522 | else | |
f8131ed2 | 523 | IN_FLOAT2 (d = log (d) / log (b), "log", arg, base); |
56abb480 | 524 | } |
b70021f4 MR |
525 | return make_float (d); |
526 | } | |
527 | ||
c2d4ea74 RS |
528 | DEFUN ("log10", Flog10, Slog10, 1, 1, 0, |
529 | "Return the logarithm base 10 of ARG.") | |
4b6baf5f RS |
530 | (arg) |
531 | register Lisp_Object arg; | |
b70021f4 | 532 | { |
4b6baf5f RS |
533 | double d = extract_float (arg); |
534 | #ifdef FLOAT_CHECK_DOMAIN | |
535 | if (d <= 0.0) | |
536 | domain_error ("log10", arg); | |
537 | #endif | |
538 | IN_FLOAT (d = log10 (d), "log10", arg); | |
c2d4ea74 RS |
539 | return make_float (d); |
540 | } | |
541 | ||
b70021f4 MR |
542 | DEFUN ("sqrt", Fsqrt, Ssqrt, 1, 1, 0, |
543 | "Return the square root of ARG.") | |
4b6baf5f RS |
544 | (arg) |
545 | register Lisp_Object arg; | |
b70021f4 | 546 | { |
4b6baf5f RS |
547 | double d = extract_float (arg); |
548 | #ifdef FLOAT_CHECK_DOMAIN | |
549 | if (d < 0.0) | |
550 | domain_error ("sqrt", arg); | |
551 | #endif | |
552 | IN_FLOAT (d = sqrt (d), "sqrt", arg); | |
b70021f4 MR |
553 | return make_float (d); |
554 | } | |
c2d4ea74 | 555 | \f |
706ac90d | 556 | #if 0 /* Not clearly worth adding. */ |
b70021f4 | 557 | |
c2d4ea74 RS |
558 | DEFUN ("acosh", Facosh, Sacosh, 1, 1, 0, |
559 | "Return the inverse hyperbolic cosine of ARG.") | |
4b6baf5f RS |
560 | (arg) |
561 | register Lisp_Object arg; | |
b70021f4 | 562 | { |
4b6baf5f RS |
563 | double d = extract_float (arg); |
564 | #ifdef FLOAT_CHECK_DOMAIN | |
565 | if (d < 1.0) | |
566 | domain_error ("acosh", arg); | |
567 | #endif | |
568 | #ifdef HAVE_INVERSE_HYPERBOLIC | |
569 | IN_FLOAT (d = acosh (d), "acosh", arg); | |
570 | #else | |
571 | IN_FLOAT (d = log (d + sqrt (d*d - 1.0)), "acosh", arg); | |
572 | #endif | |
c2d4ea74 RS |
573 | return make_float (d); |
574 | } | |
575 | ||
576 | DEFUN ("asinh", Fasinh, Sasinh, 1, 1, 0, | |
577 | "Return the inverse hyperbolic sine of ARG.") | |
4b6baf5f RS |
578 | (arg) |
579 | register Lisp_Object arg; | |
c2d4ea74 | 580 | { |
4b6baf5f RS |
581 | double d = extract_float (arg); |
582 | #ifdef HAVE_INVERSE_HYPERBOLIC | |
583 | IN_FLOAT (d = asinh (d), "asinh", arg); | |
584 | #else | |
585 | IN_FLOAT (d = log (d + sqrt (d*d + 1.0)), "asinh", arg); | |
586 | #endif | |
c2d4ea74 RS |
587 | return make_float (d); |
588 | } | |
589 | ||
590 | DEFUN ("atanh", Fatanh, Satanh, 1, 1, 0, | |
591 | "Return the inverse hyperbolic tangent of ARG.") | |
4b6baf5f RS |
592 | (arg) |
593 | register Lisp_Object arg; | |
c2d4ea74 | 594 | { |
4b6baf5f RS |
595 | double d = extract_float (arg); |
596 | #ifdef FLOAT_CHECK_DOMAIN | |
597 | if (d >= 1.0 || d <= -1.0) | |
598 | domain_error ("atanh", arg); | |
599 | #endif | |
600 | #ifdef HAVE_INVERSE_HYPERBOLIC | |
601 | IN_FLOAT (d = atanh (d), "atanh", arg); | |
602 | #else | |
603 | IN_FLOAT (d = 0.5 * log ((1.0 + d) / (1.0 - d)), "atanh", arg); | |
604 | #endif | |
c2d4ea74 RS |
605 | return make_float (d); |
606 | } | |
607 | ||
608 | DEFUN ("cosh", Fcosh, Scosh, 1, 1, 0, | |
609 | "Return the hyperbolic cosine of ARG.") | |
4b6baf5f RS |
610 | (arg) |
611 | register Lisp_Object arg; | |
c2d4ea74 | 612 | { |
4b6baf5f RS |
613 | double d = extract_float (arg); |
614 | #ifdef FLOAT_CHECK_DOMAIN | |
615 | if (d > 710.0 || d < -710.0) | |
616 | range_error ("cosh", arg); | |
617 | #endif | |
618 | IN_FLOAT (d = cosh (d), "cosh", arg); | |
c2d4ea74 RS |
619 | return make_float (d); |
620 | } | |
621 | ||
622 | DEFUN ("sinh", Fsinh, Ssinh, 1, 1, 0, | |
623 | "Return the hyperbolic sine of ARG.") | |
4b6baf5f RS |
624 | (arg) |
625 | register Lisp_Object arg; | |
c2d4ea74 | 626 | { |
4b6baf5f RS |
627 | double d = extract_float (arg); |
628 | #ifdef FLOAT_CHECK_DOMAIN | |
629 | if (d > 710.0 || d < -710.0) | |
630 | range_error ("sinh", arg); | |
631 | #endif | |
632 | IN_FLOAT (d = sinh (d), "sinh", arg); | |
b70021f4 MR |
633 | return make_float (d); |
634 | } | |
635 | ||
636 | DEFUN ("tanh", Ftanh, Stanh, 1, 1, 0, | |
637 | "Return the hyperbolic tangent of ARG.") | |
4b6baf5f RS |
638 | (arg) |
639 | register Lisp_Object arg; | |
b70021f4 | 640 | { |
4b6baf5f RS |
641 | double d = extract_float (arg); |
642 | IN_FLOAT (d = tanh (d), "tanh", arg); | |
b70021f4 MR |
643 | return make_float (d); |
644 | } | |
c2d4ea74 | 645 | #endif |
b70021f4 MR |
646 | \f |
647 | DEFUN ("abs", Fabs, Sabs, 1, 1, 0, | |
648 | "Return the absolute value of ARG.") | |
4b6baf5f RS |
649 | (arg) |
650 | register Lisp_Object arg; | |
b70021f4 | 651 | { |
4b6baf5f | 652 | CHECK_NUMBER_OR_FLOAT (arg, 0); |
b70021f4 | 653 | |
207a45c1 | 654 | if (FLOATP (arg)) |
4b6baf5f RS |
655 | IN_FLOAT (arg = make_float (fabs (XFLOAT (arg)->data)), "abs", arg); |
656 | else if (XINT (arg) < 0) | |
db37cb37 | 657 | XSETINT (arg, - XINT (arg)); |
b70021f4 | 658 | |
4b6baf5f | 659 | return arg; |
b70021f4 MR |
660 | } |
661 | ||
662 | DEFUN ("float", Ffloat, Sfloat, 1, 1, 0, | |
663 | "Return the floating point number equal to ARG.") | |
4b6baf5f RS |
664 | (arg) |
665 | register Lisp_Object arg; | |
b70021f4 | 666 | { |
4b6baf5f | 667 | CHECK_NUMBER_OR_FLOAT (arg, 0); |
b70021f4 | 668 | |
207a45c1 | 669 | if (INTEGERP (arg)) |
4b6baf5f | 670 | return make_float ((double) XINT (arg)); |
b70021f4 | 671 | else /* give 'em the same float back */ |
4b6baf5f | 672 | return arg; |
b70021f4 MR |
673 | } |
674 | ||
675 | DEFUN ("logb", Flogb, Slogb, 1, 1, 0, | |
1a3ac8b9 | 676 | "Returns largest integer <= the base 2 log of the magnitude of ARG.\n\ |
b70021f4 | 677 | This is the same as the exponent of a float.") |
4b6baf5f RS |
678 | (arg) |
679 | Lisp_Object arg; | |
b70021f4 | 680 | { |
340176df | 681 | Lisp_Object val; |
a7bf3c54 | 682 | EMACS_INT value; |
5bf54166 | 683 | double f = extract_float (arg); |
340176df | 684 | |
6694b327 KH |
685 | if (f == 0.0) |
686 | value = -(VALMASK >> 1); | |
687 | else | |
688 | { | |
6d3c6adb | 689 | #ifdef HAVE_LOGB |
6694b327 | 690 | IN_FLOAT (value = logb (f), "logb", arg); |
6d3c6adb JB |
691 | #else |
692 | #ifdef HAVE_FREXP | |
c8bf6cf3 KH |
693 | int ivalue; |
694 | IN_FLOAT (frexp (f, &ivalue), "logb", arg); | |
695 | value = ivalue - 1; | |
c26406fe | 696 | #else |
6694b327 KH |
697 | int i; |
698 | double d; | |
699 | if (f < 0.0) | |
700 | f = -f; | |
701 | value = -1; | |
702 | while (f < 0.5) | |
703 | { | |
704 | for (i = 1, d = 0.5; d * d >= f; i += i) | |
705 | d *= d; | |
706 | f /= d; | |
707 | value -= i; | |
708 | } | |
709 | while (f >= 1.0) | |
710 | { | |
711 | for (i = 1, d = 2.0; d * d <= f; i += i) | |
712 | d *= d; | |
713 | f /= d; | |
714 | value += i; | |
715 | } | |
6d3c6adb | 716 | #endif |
340176df | 717 | #endif |
6694b327 | 718 | } |
e0cb2a68 | 719 | XSETINT (val, value); |
c26406fe | 720 | return val; |
b70021f4 MR |
721 | } |
722 | ||
fc2157cb PE |
723 | #endif /* LISP_FLOAT_TYPE */ |
724 | ||
725 | ||
acbbacbe PE |
726 | /* the rounding functions */ |
727 | ||
728 | static Lisp_Object | |
729 | rounding_driver (arg, divisor, double_round, int_round2, name) | |
fc2157cb | 730 | register Lisp_Object arg, divisor; |
acbbacbe PE |
731 | double (*double_round) (); |
732 | EMACS_INT (*int_round2) (); | |
733 | char *name; | |
b70021f4 | 734 | { |
4b6baf5f | 735 | CHECK_NUMBER_OR_FLOAT (arg, 0); |
b70021f4 | 736 | |
fc2157cb PE |
737 | if (! NILP (divisor)) |
738 | { | |
9a51b24a | 739 | EMACS_INT i1, i2; |
fc2157cb PE |
740 | |
741 | CHECK_NUMBER_OR_FLOAT (divisor, 1); | |
742 | ||
743 | #ifdef LISP_FLOAT_TYPE | |
207a45c1 | 744 | if (FLOATP (arg) || FLOATP (divisor)) |
fc2157cb PE |
745 | { |
746 | double f1, f2; | |
747 | ||
207a45c1 KH |
748 | f1 = FLOATP (arg) ? XFLOAT (arg)->data : XINT (arg); |
749 | f2 = (FLOATP (divisor) ? XFLOAT (divisor)->data : XINT (divisor)); | |
d137ae2f | 750 | if (! IEEE_FLOATING_POINT && f2 == 0) |
fc2157cb PE |
751 | Fsignal (Qarith_error, Qnil); |
752 | ||
acbbacbe PE |
753 | IN_FLOAT2 (f1 = (*double_round) (f1 / f2), name, arg, divisor); |
754 | FLOAT_TO_INT2 (f1, arg, name, arg, divisor); | |
fc2157cb PE |
755 | return arg; |
756 | } | |
757 | #endif | |
758 | ||
759 | i1 = XINT (arg); | |
760 | i2 = XINT (divisor); | |
761 | ||
762 | if (i2 == 0) | |
763 | Fsignal (Qarith_error, Qnil); | |
764 | ||
acbbacbe | 765 | XSETINT (arg, (*int_round2) (i1, i2)); |
fc2157cb PE |
766 | return arg; |
767 | } | |
768 | ||
769 | #ifdef LISP_FLOAT_TYPE | |
207a45c1 | 770 | if (FLOATP (arg)) |
81a63ccc KH |
771 | { |
772 | double d; | |
acbbacbe PE |
773 | |
774 | IN_FLOAT (d = (*double_round) (XFLOAT (arg)->data), name, arg); | |
775 | FLOAT_TO_INT (d, arg, name, arg); | |
81a63ccc | 776 | } |
fc2157cb | 777 | #endif |
b70021f4 | 778 | |
4b6baf5f | 779 | return arg; |
b70021f4 MR |
780 | } |
781 | ||
acbbacbe PE |
782 | /* With C's /, the result is implementation-defined if either operand |
783 | is negative, so take care with negative operands in the following | |
784 | integer functions. */ | |
785 | ||
786 | static EMACS_INT | |
787 | ceiling2 (i1, i2) | |
788 | EMACS_INT i1, i2; | |
789 | { | |
790 | return (i2 < 0 | |
791 | ? (i1 < 0 ? ((-1 - i1) / -i2) + 1 : - (i1 / -i2)) | |
792 | : (i1 <= 0 ? - (-i1 / i2) : ((i1 - 1) / i2) + 1)); | |
793 | } | |
794 | ||
795 | static EMACS_INT | |
796 | floor2 (i1, i2) | |
797 | EMACS_INT i1, i2; | |
798 | { | |
799 | return (i2 < 0 | |
800 | ? (i1 <= 0 ? -i1 / -i2 : -1 - ((i1 - 1) / -i2)) | |
801 | : (i1 < 0 ? -1 - ((-1 - i1) / i2) : i1 / i2)); | |
802 | } | |
803 | ||
804 | static EMACS_INT | |
805 | truncate2 (i1, i2) | |
806 | EMACS_INT i1, i2; | |
807 | { | |
808 | return (i2 < 0 | |
809 | ? (i1 < 0 ? -i1 / -i2 : - (i1 / -i2)) | |
810 | : (i1 < 0 ? - (-i1 / i2) : i1 / i2)); | |
811 | } | |
812 | ||
813 | static EMACS_INT | |
814 | round2 (i1, i2) | |
815 | EMACS_INT i1, i2; | |
816 | { | |
817 | /* The C language's division operator gives us one remainder R, but | |
818 | we want the remainder R1 on the other side of 0 if R1 is closer | |
819 | to 0 than R is; because we want to round to even, we also want R1 | |
820 | if R and R1 are the same distance from 0 and if C's quotient is | |
821 | odd. */ | |
822 | EMACS_INT q = i1 / i2; | |
823 | EMACS_INT r = i1 % i2; | |
824 | EMACS_INT abs_r = r < 0 ? -r : r; | |
825 | EMACS_INT abs_r1 = (i2 < 0 ? -i2 : i2) - abs_r; | |
826 | return q + (abs_r + (q & 1) <= abs_r1 ? 0 : (i2 ^ r) < 0 ? -1 : 1); | |
827 | } | |
828 | ||
4b5878a8 KH |
829 | #ifndef HAVE_RINT |
830 | static double | |
831 | rint (d) | |
832 | double d; | |
833 | { | |
1b65c684 | 834 | return floor (d + 0.5); |
4b5878a8 KH |
835 | } |
836 | #endif | |
837 | ||
acbbacbe PE |
838 | static double |
839 | double_identity (d) | |
840 | double d; | |
841 | { | |
842 | return d; | |
843 | } | |
844 | ||
845 | DEFUN ("ceiling", Fceiling, Sceiling, 1, 2, 0, | |
846 | "Return the smallest integer no less than ARG. (Round toward +inf.)\n\ | |
847 | With optional DIVISOR, return the smallest integer no less than ARG/DIVISOR.") | |
848 | (arg, divisor) | |
849 | Lisp_Object arg, divisor; | |
850 | { | |
851 | return rounding_driver (arg, divisor, ceil, ceiling2, "ceiling"); | |
852 | } | |
853 | ||
854 | DEFUN ("floor", Ffloor, Sfloor, 1, 2, 0, | |
855 | "Return the largest integer no greater than ARG. (Round towards -inf.)\n\ | |
856 | With optional DIVISOR, return the largest integer no greater than ARG/DIVISOR.") | |
857 | (arg, divisor) | |
858 | Lisp_Object arg, divisor; | |
859 | { | |
860 | return rounding_driver (arg, divisor, floor, floor2, "floor"); | |
861 | } | |
862 | ||
863 | DEFUN ("round", Fround, Sround, 1, 2, 0, | |
864 | "Return the nearest integer to ARG.\n\ | |
865 | With optional DIVISOR, return the nearest integer to ARG/DIVISOR.") | |
866 | (arg, divisor) | |
867 | Lisp_Object arg, divisor; | |
868 | { | |
869 | return rounding_driver (arg, divisor, rint, round2, "round"); | |
870 | } | |
871 | ||
872 | DEFUN ("truncate", Ftruncate, Struncate, 1, 2, 0, | |
873 | "Truncate a floating point number to an int.\n\ | |
874 | Rounds ARG toward zero.\n\ | |
875 | With optional DIVISOR, truncate ARG/DIVISOR.") | |
876 | (arg, divisor) | |
877 | Lisp_Object arg, divisor; | |
878 | { | |
879 | return rounding_driver (arg, divisor, double_identity, truncate2, | |
880 | "truncate"); | |
881 | } | |
882 | ||
fc2157cb PE |
883 | #ifdef LISP_FLOAT_TYPE |
884 | ||
d137ae2f PE |
885 | Lisp_Object |
886 | fmod_float (x, y) | |
887 | register Lisp_Object x, y; | |
888 | { | |
889 | double f1, f2; | |
890 | ||
891 | f1 = FLOATP (x) ? XFLOAT (x)->data : XINT (x); | |
892 | f2 = FLOATP (y) ? XFLOAT (y)->data : XINT (y); | |
893 | ||
894 | if (! IEEE_FLOATING_POINT && f2 == 0) | |
895 | Fsignal (Qarith_error, Qnil); | |
896 | ||
897 | /* If the "remainder" comes out with the wrong sign, fix it. */ | |
898 | IN_FLOAT2 ((f1 = fmod (f1, f2), | |
899 | f1 = (f2 < 0 ? f1 > 0 : f1 < 0) ? f1 + f2 : f1), | |
900 | "mod", x, y); | |
901 | return make_float (f1); | |
902 | } | |
4b6baf5f | 903 | \f |
4b6baf5f RS |
904 | /* It's not clear these are worth adding. */ |
905 | ||
906 | DEFUN ("fceiling", Ffceiling, Sfceiling, 1, 1, 0, | |
907 | "Return the smallest integer no less than ARG, as a float.\n\ | |
908 | \(Round toward +inf.\)") | |
909 | (arg) | |
910 | register Lisp_Object arg; | |
911 | { | |
912 | double d = extract_float (arg); | |
913 | IN_FLOAT (d = ceil (d), "fceiling", arg); | |
914 | return make_float (d); | |
915 | } | |
916 | ||
917 | DEFUN ("ffloor", Fffloor, Sffloor, 1, 1, 0, | |
918 | "Return the largest integer no greater than ARG, as a float.\n\ | |
919 | \(Round towards -inf.\)") | |
920 | (arg) | |
921 | register Lisp_Object arg; | |
922 | { | |
923 | double d = extract_float (arg); | |
924 | IN_FLOAT (d = floor (d), "ffloor", arg); | |
925 | return make_float (d); | |
926 | } | |
b70021f4 | 927 | |
4b6baf5f RS |
928 | DEFUN ("fround", Ffround, Sfround, 1, 1, 0, |
929 | "Return the nearest integer to ARG, as a float.") | |
930 | (arg) | |
931 | register Lisp_Object arg; | |
932 | { | |
933 | double d = extract_float (arg); | |
892ed7e0 | 934 | IN_FLOAT (d = rint (d), "fround", arg); |
4b6baf5f RS |
935 | return make_float (d); |
936 | } | |
937 | ||
938 | DEFUN ("ftruncate", Fftruncate, Sftruncate, 1, 1, 0, | |
939 | "Truncate a floating point number to an integral float value.\n\ | |
940 | Rounds the value toward zero.") | |
941 | (arg) | |
942 | register Lisp_Object arg; | |
943 | { | |
944 | double d = extract_float (arg); | |
945 | if (d >= 0.0) | |
946 | IN_FLOAT (d = floor (d), "ftruncate", arg); | |
947 | else | |
a3fc5236 | 948 | IN_FLOAT (d = ceil (d), "ftruncate", arg); |
4b6baf5f | 949 | return make_float (d); |
b70021f4 MR |
950 | } |
951 | \f | |
4b6baf5f | 952 | #ifdef FLOAT_CATCH_SIGILL |
4746118a | 953 | static SIGTYPE |
b70021f4 MR |
954 | float_error (signo) |
955 | int signo; | |
956 | { | |
957 | if (! in_float) | |
958 | fatal_error_signal (signo); | |
959 | ||
6df54671 | 960 | #ifdef BSD_SYSTEM |
b70021f4 MR |
961 | #ifdef BSD4_1 |
962 | sigrelse (SIGILL); | |
963 | #else /* not BSD4_1 */ | |
e065a56e | 964 | sigsetmask (SIGEMPTYMASK); |
b70021f4 | 965 | #endif /* not BSD4_1 */ |
265a9e55 JB |
966 | #else |
967 | /* Must reestablish handler each time it is called. */ | |
968 | signal (SIGILL, float_error); | |
6df54671 | 969 | #endif /* BSD_SYSTEM */ |
b70021f4 MR |
970 | |
971 | in_float = 0; | |
972 | ||
973 | Fsignal (Qarith_error, Fcons (float_error_arg, Qnil)); | |
974 | } | |
975 | ||
4b6baf5f RS |
976 | /* Another idea was to replace the library function `infnan' |
977 | where SIGILL is signaled. */ | |
978 | ||
979 | #endif /* FLOAT_CATCH_SIGILL */ | |
980 | ||
981 | #ifdef HAVE_MATHERR | |
982 | int | |
983 | matherr (x) | |
984 | struct exception *x; | |
985 | { | |
986 | Lisp_Object args; | |
987 | if (! in_float) | |
988 | /* Not called from emacs-lisp float routines; do the default thing. */ | |
989 | return 0; | |
990 | if (!strcmp (x->name, "pow")) | |
991 | x->name = "expt"; | |
992 | ||
993 | args | |
994 | = Fcons (build_string (x->name), | |
995 | Fcons (make_float (x->arg1), | |
996 | ((!strcmp (x->name, "log") || !strcmp (x->name, "pow")) | |
997 | ? Fcons (make_float (x->arg2), Qnil) | |
998 | : Qnil))); | |
999 | switch (x->type) | |
1000 | { | |
1001 | case DOMAIN: Fsignal (Qdomain_error, args); break; | |
1002 | case SING: Fsignal (Qsingularity_error, args); break; | |
1003 | case OVERFLOW: Fsignal (Qoverflow_error, args); break; | |
1004 | case UNDERFLOW: Fsignal (Qunderflow_error, args); break; | |
1005 | default: Fsignal (Qarith_error, args); break; | |
1006 | } | |
1007 | return (1); /* don't set errno or print a message */ | |
1008 | } | |
1009 | #endif /* HAVE_MATHERR */ | |
1010 | ||
b70021f4 MR |
1011 | init_floatfns () |
1012 | { | |
4b6baf5f | 1013 | #ifdef FLOAT_CATCH_SIGILL |
b70021f4 | 1014 | signal (SIGILL, float_error); |
4b6baf5f | 1015 | #endif |
b70021f4 MR |
1016 | in_float = 0; |
1017 | } | |
1018 | ||
fc2157cb PE |
1019 | #else /* not LISP_FLOAT_TYPE */ |
1020 | ||
1021 | init_floatfns () | |
1022 | {} | |
1023 | ||
1024 | #endif /* not LISP_FLOAT_TYPE */ | |
1025 | ||
b70021f4 MR |
1026 | syms_of_floatfns () |
1027 | { | |
fc2157cb | 1028 | #ifdef LISP_FLOAT_TYPE |
b70021f4 | 1029 | defsubr (&Sacos); |
b70021f4 | 1030 | defsubr (&Sasin); |
b70021f4 | 1031 | defsubr (&Satan); |
c2d4ea74 RS |
1032 | defsubr (&Scos); |
1033 | defsubr (&Ssin); | |
1034 | defsubr (&Stan); | |
1035 | #if 0 | |
1036 | defsubr (&Sacosh); | |
1037 | defsubr (&Sasinh); | |
b70021f4 | 1038 | defsubr (&Satanh); |
c2d4ea74 RS |
1039 | defsubr (&Scosh); |
1040 | defsubr (&Ssinh); | |
1041 | defsubr (&Stanh); | |
b70021f4 MR |
1042 | defsubr (&Sbessel_y0); |
1043 | defsubr (&Sbessel_y1); | |
1044 | defsubr (&Sbessel_yn); | |
1045 | defsubr (&Sbessel_j0); | |
1046 | defsubr (&Sbessel_j1); | |
1047 | defsubr (&Sbessel_jn); | |
b70021f4 MR |
1048 | defsubr (&Serf); |
1049 | defsubr (&Serfc); | |
c2d4ea74 | 1050 | defsubr (&Slog_gamma); |
4b6baf5f | 1051 | defsubr (&Scube_root); |
892ed7e0 | 1052 | #endif |
4b6baf5f RS |
1053 | defsubr (&Sfceiling); |
1054 | defsubr (&Sffloor); | |
1055 | defsubr (&Sfround); | |
1056 | defsubr (&Sftruncate); | |
b70021f4 | 1057 | defsubr (&Sexp); |
c2d4ea74 | 1058 | defsubr (&Sexpt); |
b70021f4 MR |
1059 | defsubr (&Slog); |
1060 | defsubr (&Slog10); | |
b70021f4 | 1061 | defsubr (&Ssqrt); |
b70021f4 MR |
1062 | |
1063 | defsubr (&Sabs); | |
1064 | defsubr (&Sfloat); | |
1065 | defsubr (&Slogb); | |
acbbacbe | 1066 | #endif /* LISP_FLOAT_TYPE */ |
b70021f4 | 1067 | defsubr (&Sceiling); |
acbbacbe | 1068 | defsubr (&Sfloor); |
b70021f4 MR |
1069 | defsubr (&Sround); |
1070 | defsubr (&Struncate); | |
1071 | } |