1 /* A GNU-like <math.h>.
3 Copyright (C) 2002-2003, 2007-2011 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #ifndef _@GUARD_PREFIX@_MATH_H
21 @PRAGMA_SYSTEM_HEADER@
25 /* The include_next requires a split double-inclusion guard. */
26 #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_MATH_H@
28 #ifndef _@GUARD_PREFIX@_MATH_H
29 #define _@GUARD_PREFIX@_MATH_H
32 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
34 /* The definition of _GL_ARG_NONNULL is copied here. */
36 /* The definition of _GL_WARN_ON_USE is copied here. */
38 /* Helper macros to define a portability warning for the
39 classification macro FUNC called with VALUE. POSIX declares the
40 classification macros with an argument of real-floating (that is,
41 one of float, double, or long double). */
42 #define _GL_WARN_REAL_FLOATING_DECL(func) \
44 rpl_ ## func ## f (float f) \
49 rpl_ ## func ## d (double d) \
54 rpl_ ## func ## l (long double l) \
58 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \
59 "use gnulib module " #func " for portability"); \
60 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \
61 "use gnulib module " #func " for portability"); \
62 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \
63 "use gnulib module " #func " for portability")
64 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
65 (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \
66 : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \
67 : rpl_ ## func ## l (value))
71 /* Pull in a function that fixes the 'int' to 'long double' conversion
73 _GL_EXTERN_C void _Qp_itoq (long double *, int);
74 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
78 /* POSIX allows platforms that don't support NAN. But all major
79 machines in the past 15 years have supported something close to
80 IEEE NaN, so we define this unconditionally. We also must define
81 it on platforms like Solaris 10, where NAN is present but defined
82 as a function pointer rather than a floating point constant. */
83 #if !defined NAN || @REPLACE_NAN@
84 # if !GNULIB_defined_NAN
86 /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
87 choke on the expression 0.0 / 0.0. */
88 # if defined __DECC || defined _MSC_VER
92 static float zero = 0.0f;
97 # define NAN (0.0f / 0.0f)
99 # define GNULIB_defined_NAN 1
103 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
104 than a floating point constant. */
105 #if @REPLACE_HUGE_VAL@
107 # define HUGE_VAL (1.0 / 0.0)
114 _GL_FUNCDECL_SYS (acosf, float, (float x));
116 _GL_CXXALIAS_SYS (acosf, float, (float x));
117 _GL_CXXALIASWARN (acosf);
118 #elif defined GNULIB_POSIXCHECK
120 # if HAVE_RAW_DECL_ACOSF
121 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
122 "use gnulib module acosf for portability");
127 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
128 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
130 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
131 _GL_CXXALIASWARN (acosl);
132 #elif defined GNULIB_POSIXCHECK
134 # if HAVE_RAW_DECL_ACOSL
135 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
136 "use gnulib module mathl for portability");
144 _GL_FUNCDECL_SYS (asinf, float, (float x));
146 _GL_CXXALIAS_SYS (asinf, float, (float x));
147 _GL_CXXALIASWARN (asinf);
148 #elif defined GNULIB_POSIXCHECK
150 # if HAVE_RAW_DECL_ASINF
151 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
152 "use gnulib module asinf for portability");
157 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
158 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
160 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
161 _GL_CXXALIASWARN (asinl);
162 #elif defined GNULIB_POSIXCHECK
164 # if HAVE_RAW_DECL_ASINL
165 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
166 "use gnulib module mathl for portability");
174 _GL_FUNCDECL_SYS (atanf, float, (float x));
176 _GL_CXXALIAS_SYS (atanf, float, (float x));
177 _GL_CXXALIASWARN (atanf);
178 #elif defined GNULIB_POSIXCHECK
180 # if HAVE_RAW_DECL_ATANF
181 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
182 "use gnulib module atanf for portability");
187 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
188 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
190 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
191 _GL_CXXALIASWARN (atanl);
192 #elif defined GNULIB_POSIXCHECK
194 # if HAVE_RAW_DECL_ATANL
195 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
196 "use gnulib module mathl for portability");
204 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
206 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
207 _GL_CXXALIASWARN (atan2f);
208 #elif defined GNULIB_POSIXCHECK
210 # if HAVE_RAW_DECL_ATAN2F
211 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
212 "use gnulib module atan2f for portability");
219 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
221 # define ceilf rpl_ceilf
223 _GL_FUNCDECL_RPL (ceilf, float, (float x));
224 _GL_CXXALIAS_RPL (ceilf, float, (float x));
226 # if !@HAVE_DECL_CEILF@
227 _GL_FUNCDECL_SYS (ceilf, float, (float x));
229 _GL_CXXALIAS_SYS (ceilf, float, (float x));
231 _GL_CXXALIASWARN (ceilf);
232 #elif defined GNULIB_POSIXCHECK
234 # if HAVE_RAW_DECL_CEILF
235 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
236 "use gnulib module ceilf for portability");
242 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
243 # define ceil rpl_ceil
245 _GL_FUNCDECL_RPL (ceil, double, (double x));
246 _GL_CXXALIAS_RPL (ceil, double, (double x));
248 _GL_CXXALIAS_SYS (ceil, double, (double x));
250 _GL_CXXALIASWARN (ceil);
255 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
257 # define ceill rpl_ceill
259 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
260 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
262 # if !@HAVE_DECL_CEILL@
263 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
265 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
267 _GL_CXXALIASWARN (ceill);
268 #elif defined GNULIB_POSIXCHECK
270 # if HAVE_RAW_DECL_CEILL
271 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
272 "use gnulib module ceill for portability");
280 _GL_FUNCDECL_SYS (cosf, float, (float x));
282 _GL_CXXALIAS_SYS (cosf, float, (float x));
283 _GL_CXXALIASWARN (cosf);
284 #elif defined GNULIB_POSIXCHECK
286 # if HAVE_RAW_DECL_COSF
287 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
288 "use gnulib module cosf for portability");
293 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
294 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
296 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
297 _GL_CXXALIASWARN (cosl);
298 #elif defined GNULIB_POSIXCHECK
300 # if HAVE_RAW_DECL_COSL
301 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
302 "use gnulib module mathl for portability");
310 _GL_FUNCDECL_SYS (coshf, float, (float x));
312 _GL_CXXALIAS_SYS (coshf, float, (float x));
313 _GL_CXXALIASWARN (coshf);
314 #elif defined GNULIB_POSIXCHECK
316 # if HAVE_RAW_DECL_COSHF
317 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
318 "use gnulib module coshf for portability");
323 #if @GNULIB_COPYSIGN@
324 # if !@HAVE_COPYSIGN@
325 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
327 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
328 _GL_CXXALIASWARN (copysign);
329 #elif defined GNULIB_POSIXCHECK
331 # if HAVE_RAW_DECL_COPYSIGN
332 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
333 "use gnulib module copysign for portability");
341 _GL_FUNCDECL_SYS (expf, float, (float x));
343 _GL_CXXALIAS_SYS (expf, float, (float x));
344 _GL_CXXALIASWARN (expf);
345 #elif defined GNULIB_POSIXCHECK
347 # if HAVE_RAW_DECL_EXPF
348 _GL_WARN_ON_USE (expf, "expf is unportable - "
349 "use gnulib module expf for portability");
354 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
355 _GL_FUNCDECL_SYS (expl, long double, (long double x));
357 _GL_CXXALIAS_SYS (expl, long double, (long double x));
358 _GL_CXXALIASWARN (expl);
359 #elif defined GNULIB_POSIXCHECK
361 # if HAVE_RAW_DECL_EXPL
362 _GL_WARN_ON_USE (expl, "expl is unportable - "
363 "use gnulib module mathl for portability");
371 _GL_FUNCDECL_SYS (fabsf, float, (float x));
373 _GL_CXXALIAS_SYS (fabsf, float, (float x));
374 _GL_CXXALIASWARN (fabsf);
375 #elif defined GNULIB_POSIXCHECK
377 # if HAVE_RAW_DECL_FABSF
378 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
379 "use gnulib module fabsf for portability");
385 # if @REPLACE_FLOORF@
386 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
388 # define floorf rpl_floorf
390 _GL_FUNCDECL_RPL (floorf, float, (float x));
391 _GL_CXXALIAS_RPL (floorf, float, (float x));
393 # if !@HAVE_DECL_FLOORF@
394 _GL_FUNCDECL_SYS (floorf, float, (float x));
396 _GL_CXXALIAS_SYS (floorf, float, (float x));
398 _GL_CXXALIASWARN (floorf);
399 #elif defined GNULIB_POSIXCHECK
401 # if HAVE_RAW_DECL_FLOORF
402 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
403 "use gnulib module floorf for portability");
409 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
410 # define floor rpl_floor
412 _GL_FUNCDECL_RPL (floor, double, (double x));
413 _GL_CXXALIAS_RPL (floor, double, (double x));
415 _GL_CXXALIAS_SYS (floor, double, (double x));
417 _GL_CXXALIASWARN (floor);
421 # if @REPLACE_FLOORL@
422 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
424 # define floorl rpl_floorl
426 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
427 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
429 # if !@HAVE_DECL_FLOORL@
430 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
432 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
434 _GL_CXXALIASWARN (floorl);
435 #elif defined GNULIB_POSIXCHECK
437 # if HAVE_RAW_DECL_FLOORL
438 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
439 "use gnulib module floorl for portability");
447 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
449 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
450 _GL_CXXALIASWARN (fmodf);
451 #elif defined GNULIB_POSIXCHECK
453 # if HAVE_RAW_DECL_FMODF
454 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
455 "use gnulib module fmodf for portability");
463 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
464 If x is zero: mantissa = x, exp = 0.
465 If x is infinite or NaN: mantissa = x, exp unspecified.
466 Store exp in *EXPPTR and return mantissa. */
468 # if @REPLACE_FREXPF@
469 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
471 # define frexpf rpl_frexpf
473 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
474 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
478 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
480 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
482 _GL_CXXALIASWARN (frexpf);
483 #elif defined GNULIB_POSIXCHECK
485 # if HAVE_RAW_DECL_FREXPF
486 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
487 "use gnulib module frexpf for portability");
494 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
495 If x is zero: mantissa = x, exp = 0.
496 If x is infinite or NaN: mantissa = x, exp unspecified.
497 Store exp in *EXPPTR and return mantissa. */
500 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
501 # define frexp rpl_frexp
503 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
504 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
506 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
508 _GL_CXXALIASWARN (frexp);
509 #elif defined GNULIB_POSIXCHECK
511 /* Assume frexp is always declared. */
512 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
513 "use gnulib module frexp for portability");
519 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
520 If x is zero: mantissa = x, exp = 0.
521 If x is infinite or NaN: mantissa = x, exp unspecified.
522 Store exp in *EXPPTR and return mantissa. */
523 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
524 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
526 # define frexpl rpl_frexpl
528 _GL_FUNCDECL_RPL (frexpl, long double,
529 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
530 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
532 # if !@HAVE_DECL_FREXPL@
533 _GL_FUNCDECL_SYS (frexpl, long double,
534 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
537 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
540 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
541 _GL_CXXALIASWARN (frexpl);
543 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
545 # if HAVE_RAW_DECL_FREXPL
546 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
547 "use gnulib module frexpl for portability");
552 /* Return x * 2^exp. */
556 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
558 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
559 _GL_CXXALIASWARN (ldexpf);
560 #elif defined GNULIB_POSIXCHECK
562 # if HAVE_RAW_DECL_LDEXPF
563 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
564 "use gnulib module ldexpf for portability");
568 /* Return x * 2^exp. */
569 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
570 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
572 # define ldexpl rpl_ldexpl
574 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
575 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
577 # if !@HAVE_DECL_LDEXPL@
578 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
581 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
585 _GL_CXXALIASWARN (ldexpl);
587 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
589 # if HAVE_RAW_DECL_LDEXPL
590 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
591 "use gnulib module ldexpl for portability");
597 # if !@HAVE_DECL_LOGB@
598 _GL_EXTERN_C double logb (double x);
600 #elif defined GNULIB_POSIXCHECK
602 # if HAVE_RAW_DECL_LOGB
603 _GL_WARN_ON_USE (logb, "logb is unportable - "
604 "use gnulib module logb for portability");
612 _GL_FUNCDECL_SYS (logf, float, (float x));
614 _GL_CXXALIAS_SYS (logf, float, (float x));
615 _GL_CXXALIASWARN (logf);
616 #elif defined GNULIB_POSIXCHECK
618 # if HAVE_RAW_DECL_LOGF
619 _GL_WARN_ON_USE (logf, "logf is unportable - "
620 "use gnulib module logf for portability");
625 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
626 _GL_FUNCDECL_SYS (logl, long double, (long double x));
628 _GL_CXXALIAS_SYS (logl, long double, (long double x));
629 _GL_CXXALIASWARN (logl);
630 #elif defined GNULIB_POSIXCHECK
632 # if HAVE_RAW_DECL_LOGL
633 _GL_WARN_ON_USE (logl, "logl is unportable - "
634 "use gnulib module mathl for portability");
642 _GL_FUNCDECL_SYS (log10f, float, (float x));
644 _GL_CXXALIAS_SYS (log10f, float, (float x));
645 _GL_CXXALIASWARN (log10f);
646 #elif defined GNULIB_POSIXCHECK
648 # if HAVE_RAW_DECL_LOG10F
649 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
650 "use gnulib module log10f for portability");
658 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
660 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
661 _GL_CXXALIASWARN (modff);
662 #elif defined GNULIB_POSIXCHECK
664 # if HAVE_RAW_DECL_MODFF
665 _GL_WARN_ON_USE (modff, "modff is unportable - "
666 "use gnulib module modff for portability");
674 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
676 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
677 _GL_CXXALIASWARN (powf);
678 #elif defined GNULIB_POSIXCHECK
680 # if HAVE_RAW_DECL_POWF
681 _GL_WARN_ON_USE (powf, "powf is unportable - "
682 "use gnulib module powf for portability");
688 # if @REPLACE_ROUNDF@
689 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
691 # define roundf rpl_roundf
693 _GL_FUNCDECL_RPL (roundf, float, (float x));
694 _GL_CXXALIAS_RPL (roundf, float, (float x));
696 # if !@HAVE_DECL_ROUNDF@
697 _GL_FUNCDECL_SYS (roundf, float, (float x));
699 _GL_CXXALIAS_SYS (roundf, float, (float x));
701 _GL_CXXALIASWARN (roundf);
702 #elif defined GNULIB_POSIXCHECK
704 # if HAVE_RAW_DECL_ROUNDF
705 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
706 "use gnulib module roundf for portability");
712 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
714 # define round rpl_round
716 _GL_FUNCDECL_RPL (round, double, (double x));
717 _GL_CXXALIAS_RPL (round, double, (double x));
719 # if !@HAVE_DECL_ROUND@
720 _GL_FUNCDECL_SYS (round, double, (double x));
722 _GL_CXXALIAS_SYS (round, double, (double x));
724 _GL_CXXALIASWARN (round);
725 #elif defined GNULIB_POSIXCHECK
727 # if HAVE_RAW_DECL_ROUND
728 _GL_WARN_ON_USE (round, "round is unportable - "
729 "use gnulib module round for portability");
734 # if @REPLACE_ROUNDL@
735 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
737 # define roundl rpl_roundl
739 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
740 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
742 # if !@HAVE_DECL_ROUNDL@
743 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
745 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
747 _GL_CXXALIASWARN (roundl);
748 #elif defined GNULIB_POSIXCHECK
750 # if HAVE_RAW_DECL_ROUNDL
751 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
752 "use gnulib module roundl for portability");
760 _GL_FUNCDECL_SYS (sinf, float, (float x));
762 _GL_CXXALIAS_SYS (sinf, float, (float x));
763 _GL_CXXALIASWARN (sinf);
764 #elif defined GNULIB_POSIXCHECK
766 # if HAVE_RAW_DECL_SINF
767 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
768 "use gnulib module sinf for portability");
773 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
774 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
776 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
777 _GL_CXXALIASWARN (sinl);
778 #elif defined GNULIB_POSIXCHECK
780 # if HAVE_RAW_DECL_SINL
781 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
782 "use gnulib module mathl for portability");
790 _GL_FUNCDECL_SYS (sinhf, float, (float x));
792 _GL_CXXALIAS_SYS (sinhf, float, (float x));
793 _GL_CXXALIASWARN (sinhf);
794 #elif defined GNULIB_POSIXCHECK
796 # if HAVE_RAW_DECL_SINHF
797 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
798 "use gnulib module sinhf for portability");
806 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
808 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
809 _GL_CXXALIASWARN (sqrtf);
810 #elif defined GNULIB_POSIXCHECK
812 # if HAVE_RAW_DECL_SQRTF
813 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
814 "use gnulib module sqrtf for portability");
819 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
820 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
822 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
823 _GL_CXXALIASWARN (sqrtl);
824 #elif defined GNULIB_POSIXCHECK
826 # if HAVE_RAW_DECL_SQRTL
827 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
828 "use gnulib module mathl for portability");
836 _GL_FUNCDECL_SYS (tanf, float, (float x));
838 _GL_CXXALIAS_SYS (tanf, float, (float x));
839 _GL_CXXALIASWARN (tanf);
840 #elif defined GNULIB_POSIXCHECK
842 # if HAVE_RAW_DECL_TANF
843 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
844 "use gnulib module tanf for portability");
849 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
850 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
852 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
853 _GL_CXXALIASWARN (tanl);
854 #elif defined GNULIB_POSIXCHECK
856 # if HAVE_RAW_DECL_TANL
857 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
858 "use gnulib module mathl for portability");
866 _GL_FUNCDECL_SYS (tanhf, float, (float x));
868 _GL_CXXALIAS_SYS (tanhf, float, (float x));
869 _GL_CXXALIASWARN (tanhf);
870 #elif defined GNULIB_POSIXCHECK
872 # if HAVE_RAW_DECL_TANHF
873 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
874 "use gnulib module tanhf for portability");
880 # if @REPLACE_TRUNCF@
881 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
882 # define truncf rpl_truncf
884 _GL_FUNCDECL_RPL (truncf, float, (float x));
885 _GL_CXXALIAS_RPL (truncf, float, (float x));
887 # if !@HAVE_DECL_TRUNCF@
888 _GL_FUNCDECL_SYS (truncf, float, (float x));
890 _GL_CXXALIAS_SYS (truncf, float, (float x));
892 _GL_CXXALIASWARN (truncf);
893 #elif defined GNULIB_POSIXCHECK
895 # if HAVE_RAW_DECL_TRUNCF
896 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
897 "use gnulib module truncf for portability");
903 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
904 # define trunc rpl_trunc
906 _GL_FUNCDECL_RPL (trunc, double, (double x));
907 _GL_CXXALIAS_RPL (trunc, double, (double x));
909 # if !@HAVE_DECL_TRUNC@
910 _GL_FUNCDECL_SYS (trunc, double, (double x));
912 _GL_CXXALIAS_SYS (trunc, double, (double x));
914 _GL_CXXALIASWARN (trunc);
915 #elif defined GNULIB_POSIXCHECK
917 # if HAVE_RAW_DECL_TRUNC
918 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
919 "use gnulib module trunc for portability");
924 # if @REPLACE_TRUNCL@
925 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
927 # define truncl rpl_truncl
929 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
930 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
932 # if !@HAVE_DECL_TRUNCL@
933 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
935 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
937 _GL_CXXALIASWARN (truncl);
938 #elif defined GNULIB_POSIXCHECK
940 # if HAVE_RAW_DECL_TRUNCL
941 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
942 "use gnulib module truncl for portability");
947 /* Definitions of function-like macros come here, after the function
951 #if @GNULIB_ISFINITE@
952 # if @REPLACE_ISFINITE@
953 _GL_EXTERN_C int gl_isfinitef (float x);
954 _GL_EXTERN_C int gl_isfinited (double x);
955 _GL_EXTERN_C int gl_isfinitel (long double x);
957 # define isfinite(x) \
958 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
959 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
962 #elif defined GNULIB_POSIXCHECK
963 # if defined isfinite
964 _GL_WARN_REAL_FLOATING_DECL (isfinite);
966 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
973 _GL_EXTERN_C int gl_isinff (float x);
974 _GL_EXTERN_C int gl_isinfd (double x);
975 _GL_EXTERN_C int gl_isinfl (long double x);
978 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
979 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
982 #elif defined GNULIB_POSIXCHECK
984 _GL_WARN_REAL_FLOATING_DECL (isinf);
986 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
992 /* Test for NaN for 'float' numbers. */
994 /* The original <math.h> included above provides a declaration of isnan macro
995 or (older) isnanf function. */
997 /* GCC 4.0 and newer provides three built-ins for isnan. */
999 # define isnanf(x) __builtin_isnanf ((float)(x))
1000 # elif defined isnan
1002 # define isnanf(x) isnan ((float)(x))
1005 /* Test whether X is a NaN. */
1007 # define isnanf rpl_isnanf
1008 _GL_EXTERN_C int isnanf (float x);
1013 /* Test for NaN for 'double' numbers.
1014 This function is a gnulib extension, unlike isnan() which applied only
1015 to 'double' numbers earlier but now is a type-generic macro. */
1017 /* The original <math.h> included above provides a declaration of isnan
1020 /* GCC 4.0 and newer provides three built-ins for isnan. */
1022 # define isnand(x) __builtin_isnan ((double)(x))
1025 # define isnand(x) isnan ((double)(x))
1028 /* Test whether X is a NaN. */
1030 # define isnand rpl_isnand
1031 _GL_EXTERN_C int isnand (double x);
1036 /* Test for NaN for 'long double' numbers. */
1038 /* The original <math.h> included above provides a declaration of isnan
1039 macro or (older) isnanl function. */
1041 /* GCC 4.0 and newer provides three built-ins for isnan. */
1043 # define isnanl(x) __builtin_isnanl ((long double)(x))
1044 # elif defined isnan
1046 # define isnanl(x) isnan ((long double)(x))
1049 /* Test whether X is a NaN. */
1051 # define isnanl rpl_isnanl
1052 _GL_EXTERN_C int isnanl (long double x);
1056 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1058 # if @REPLACE_ISNAN@
1059 /* We can't just use the isnanf macro (e.g.) as exposed by
1060 isnanf.h (e.g.) here, because those may end up being macros
1061 that recursively expand back to isnan. So use the gnulib
1062 replacements for them directly. */
1063 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1064 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1066 _GL_EXTERN_C int rpl_isnanf (float x);
1067 # define gl_isnan_f(x) rpl_isnanf (x)
1069 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1070 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1072 _GL_EXTERN_C int rpl_isnand (double x);
1073 # define gl_isnan_d(x) rpl_isnand (x)
1075 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1076 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1078 _GL_EXTERN_C int rpl_isnanl (long double x);
1079 # define gl_isnan_l(x) rpl_isnanl (x)
1083 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1084 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1086 # elif __GNUC__ >= 4
1089 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1090 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1091 __builtin_isnanf ((float)(x)))
1093 /* Ensure isnan is a macro. */
1095 # define isnan isnan
1097 #elif defined GNULIB_POSIXCHECK
1099 _GL_WARN_REAL_FLOATING_DECL (isnan);
1101 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1106 #if @GNULIB_SIGNBIT@
1107 # if @REPLACE_SIGNBIT_USING_GCC@
1109 /* GCC 4.0 and newer provides three built-ins for signbit. */
1110 # define signbit(x) \
1111 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1112 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1113 __builtin_signbitf (x))
1115 # if @REPLACE_SIGNBIT@
1117 _GL_EXTERN_C int gl_signbitf (float arg);
1118 _GL_EXTERN_C int gl_signbitd (double arg);
1119 _GL_EXTERN_C int gl_signbitl (long double arg);
1120 # if __GNUC__ >= 2 && !__STRICT_ANSI__
1121 # define _GL_NUM_UINT_WORDS(type) \
1122 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1123 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1124 # define gl_signbitf_OPTIMIZED_MACRO
1125 # define gl_signbitf(arg) \
1126 ({ union { float _value; \
1127 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1129 _m._value = (arg); \
1130 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1133 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1134 # define gl_signbitd_OPTIMIZED_MACRO
1135 # define gl_signbitd(arg) \
1136 ({ union { double _value; \
1137 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1139 _m._value = (arg); \
1140 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1143 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1144 # define gl_signbitl_OPTIMIZED_MACRO
1145 # define gl_signbitl(arg) \
1146 ({ union { long double _value; \
1147 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1149 _m._value = (arg); \
1150 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1154 # define signbit(x) \
1155 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1156 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1159 #elif defined GNULIB_POSIXCHECK
1160 # if defined signbit
1161 _GL_WARN_REAL_FLOATING_DECL (signbit);
1163 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1168 #endif /* _@GUARD_PREFIX@_MATH_H */
1169 #endif /* _@GUARD_PREFIX@_MATH_H */