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