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");
326 _GL_FUNCDECL_SYS (expf, float, (float x));
328 _GL_CXXALIAS_SYS (expf, float, (float x));
329 _GL_CXXALIASWARN (expf);
330 #elif defined GNULIB_POSIXCHECK
332 # if HAVE_RAW_DECL_EXPF
333 _GL_WARN_ON_USE (expf, "expf is unportable - "
334 "use gnulib module expf for portability");
339 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
340 _GL_FUNCDECL_SYS (expl, long double, (long double x));
342 _GL_CXXALIAS_SYS (expl, long double, (long double x));
343 _GL_CXXALIASWARN (expl);
344 #elif defined GNULIB_POSIXCHECK
346 # if HAVE_RAW_DECL_EXPL
347 _GL_WARN_ON_USE (expl, "expl is unportable - "
348 "use gnulib module mathl for portability");
356 _GL_FUNCDECL_SYS (fabsf, float, (float x));
358 _GL_CXXALIAS_SYS (fabsf, float, (float x));
359 _GL_CXXALIASWARN (fabsf);
360 #elif defined GNULIB_POSIXCHECK
362 # if HAVE_RAW_DECL_FABSF
363 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
364 "use gnulib module fabsf for portability");
370 # if @REPLACE_FLOORF@
371 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
373 # define floorf rpl_floorf
375 _GL_FUNCDECL_RPL (floorf, float, (float x));
376 _GL_CXXALIAS_RPL (floorf, float, (float x));
378 # if !@HAVE_DECL_FLOORF@
379 _GL_FUNCDECL_SYS (floorf, float, (float x));
381 _GL_CXXALIAS_SYS (floorf, float, (float x));
383 _GL_CXXALIASWARN (floorf);
384 #elif defined GNULIB_POSIXCHECK
386 # if HAVE_RAW_DECL_FLOORF
387 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
388 "use gnulib module floorf for portability");
394 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
395 # define floor rpl_floor
397 _GL_FUNCDECL_RPL (floor, double, (double x));
398 _GL_CXXALIAS_RPL (floor, double, (double x));
400 _GL_CXXALIAS_SYS (floor, double, (double x));
402 _GL_CXXALIASWARN (floor);
406 # if @REPLACE_FLOORL@
407 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
409 # define floorl rpl_floorl
411 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
412 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
414 # if !@HAVE_DECL_FLOORL@
415 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
417 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
419 _GL_CXXALIASWARN (floorl);
420 #elif defined GNULIB_POSIXCHECK
422 # if HAVE_RAW_DECL_FLOORL
423 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
424 "use gnulib module floorl for portability");
432 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
434 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
435 _GL_CXXALIASWARN (fmodf);
436 #elif defined GNULIB_POSIXCHECK
438 # if HAVE_RAW_DECL_FMODF
439 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
440 "use gnulib module fmodf for portability");
448 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
449 If x is zero: mantissa = x, exp = 0.
450 If x is infinite or NaN: mantissa = x, exp unspecified.
451 Store exp in *EXPPTR and return mantissa. */
453 # if @REPLACE_FREXPF@
454 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
456 # define frexpf rpl_frexpf
458 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
459 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
463 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
465 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
467 _GL_CXXALIASWARN (frexpf);
468 #elif defined GNULIB_POSIXCHECK
470 # if HAVE_RAW_DECL_FREXPF
471 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
472 "use gnulib module frexpf for portability");
479 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
480 If x is zero: mantissa = x, exp = 0.
481 If x is infinite or NaN: mantissa = x, exp unspecified.
482 Store exp in *EXPPTR and return mantissa. */
485 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
486 # define frexp rpl_frexp
488 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
489 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
491 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
493 _GL_CXXALIASWARN (frexp);
494 #elif defined GNULIB_POSIXCHECK
496 /* Assume frexp is always declared. */
497 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
498 "use gnulib module frexp for portability");
504 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
505 If x is zero: mantissa = x, exp = 0.
506 If x is infinite or NaN: mantissa = x, exp unspecified.
507 Store exp in *EXPPTR and return mantissa. */
508 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
509 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
511 # define frexpl rpl_frexpl
513 _GL_FUNCDECL_RPL (frexpl, long double,
514 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
515 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
517 # if !@HAVE_DECL_FREXPL@
518 _GL_FUNCDECL_SYS (frexpl, long double,
519 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
522 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
525 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
526 _GL_CXXALIASWARN (frexpl);
528 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
530 # if HAVE_RAW_DECL_FREXPL
531 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
532 "use gnulib module frexpl for portability");
537 /* Return x * 2^exp. */
541 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
543 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
544 _GL_CXXALIASWARN (ldexpf);
545 #elif defined GNULIB_POSIXCHECK
547 # if HAVE_RAW_DECL_LDEXPF
548 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
549 "use gnulib module ldexpf for portability");
553 /* Return x * 2^exp. */
554 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
555 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
557 # define ldexpl rpl_ldexpl
559 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
560 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
562 # if !@HAVE_DECL_LDEXPL@
563 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
566 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
570 _GL_CXXALIASWARN (ldexpl);
572 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
574 # if HAVE_RAW_DECL_LDEXPL
575 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
576 "use gnulib module ldexpl for portability");
582 # if !@HAVE_DECL_LOGB@
583 _GL_EXTERN_C double logb (double x);
585 #elif defined GNULIB_POSIXCHECK
587 # if HAVE_RAW_DECL_LOGB
588 _GL_WARN_ON_USE (logb, "logb is unportable - "
589 "use gnulib module logb for portability");
597 _GL_FUNCDECL_SYS (logf, float, (float x));
599 _GL_CXXALIAS_SYS (logf, float, (float x));
600 _GL_CXXALIASWARN (logf);
601 #elif defined GNULIB_POSIXCHECK
603 # if HAVE_RAW_DECL_LOGF
604 _GL_WARN_ON_USE (logf, "logf is unportable - "
605 "use gnulib module logf for portability");
610 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
611 _GL_FUNCDECL_SYS (logl, long double, (long double x));
613 _GL_CXXALIAS_SYS (logl, long double, (long double x));
614 _GL_CXXALIASWARN (logl);
615 #elif defined GNULIB_POSIXCHECK
617 # if HAVE_RAW_DECL_LOGL
618 _GL_WARN_ON_USE (logl, "logl is unportable - "
619 "use gnulib module mathl for portability");
627 _GL_FUNCDECL_SYS (log10f, float, (float x));
629 _GL_CXXALIAS_SYS (log10f, float, (float x));
630 _GL_CXXALIASWARN (log10f);
631 #elif defined GNULIB_POSIXCHECK
633 # if HAVE_RAW_DECL_LOG10F
634 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
635 "use gnulib module log10f for portability");
643 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
645 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
646 _GL_CXXALIASWARN (modff);
647 #elif defined GNULIB_POSIXCHECK
649 # if HAVE_RAW_DECL_MODFF
650 _GL_WARN_ON_USE (modff, "modff is unportable - "
651 "use gnulib module modff for portability");
659 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
661 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
662 _GL_CXXALIASWARN (powf);
663 #elif defined GNULIB_POSIXCHECK
665 # if HAVE_RAW_DECL_POWF
666 _GL_WARN_ON_USE (powf, "powf is unportable - "
667 "use gnulib module powf for portability");
673 # if @REPLACE_ROUNDF@
674 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
676 # define roundf rpl_roundf
678 _GL_FUNCDECL_RPL (roundf, float, (float x));
679 _GL_CXXALIAS_RPL (roundf, float, (float x));
681 # if !@HAVE_DECL_ROUNDF@
682 _GL_FUNCDECL_SYS (roundf, float, (float x));
684 _GL_CXXALIAS_SYS (roundf, float, (float x));
686 _GL_CXXALIASWARN (roundf);
687 #elif defined GNULIB_POSIXCHECK
689 # if HAVE_RAW_DECL_ROUNDF
690 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
691 "use gnulib module roundf for portability");
697 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
699 # define round rpl_round
701 _GL_FUNCDECL_RPL (round, double, (double x));
702 _GL_CXXALIAS_RPL (round, double, (double x));
704 # if !@HAVE_DECL_ROUND@
705 _GL_FUNCDECL_SYS (round, double, (double x));
707 _GL_CXXALIAS_SYS (round, double, (double x));
709 _GL_CXXALIASWARN (round);
710 #elif defined GNULIB_POSIXCHECK
712 # if HAVE_RAW_DECL_ROUND
713 _GL_WARN_ON_USE (round, "round is unportable - "
714 "use gnulib module round for portability");
719 # if @REPLACE_ROUNDL@
720 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
722 # define roundl rpl_roundl
724 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
725 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
727 # if !@HAVE_DECL_ROUNDL@
728 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
730 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
732 _GL_CXXALIASWARN (roundl);
733 #elif defined GNULIB_POSIXCHECK
735 # if HAVE_RAW_DECL_ROUNDL
736 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
737 "use gnulib module roundl for portability");
745 _GL_FUNCDECL_SYS (sinf, float, (float x));
747 _GL_CXXALIAS_SYS (sinf, float, (float x));
748 _GL_CXXALIASWARN (sinf);
749 #elif defined GNULIB_POSIXCHECK
751 # if HAVE_RAW_DECL_SINF
752 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
753 "use gnulib module sinf for portability");
758 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
759 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
761 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
762 _GL_CXXALIASWARN (sinl);
763 #elif defined GNULIB_POSIXCHECK
765 # if HAVE_RAW_DECL_SINL
766 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
767 "use gnulib module mathl for portability");
775 _GL_FUNCDECL_SYS (sinhf, float, (float x));
777 _GL_CXXALIAS_SYS (sinhf, float, (float x));
778 _GL_CXXALIASWARN (sinhf);
779 #elif defined GNULIB_POSIXCHECK
781 # if HAVE_RAW_DECL_SINHF
782 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
783 "use gnulib module sinhf for portability");
791 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
793 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
794 _GL_CXXALIASWARN (sqrtf);
795 #elif defined GNULIB_POSIXCHECK
797 # if HAVE_RAW_DECL_SQRTF
798 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
799 "use gnulib module sqrtf for portability");
804 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
805 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
807 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
808 _GL_CXXALIASWARN (sqrtl);
809 #elif defined GNULIB_POSIXCHECK
811 # if HAVE_RAW_DECL_SQRTL
812 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
813 "use gnulib module mathl for portability");
821 _GL_FUNCDECL_SYS (tanf, float, (float x));
823 _GL_CXXALIAS_SYS (tanf, float, (float x));
824 _GL_CXXALIASWARN (tanf);
825 #elif defined GNULIB_POSIXCHECK
827 # if HAVE_RAW_DECL_TANF
828 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
829 "use gnulib module tanf for portability");
834 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
835 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
837 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
838 _GL_CXXALIASWARN (tanl);
839 #elif defined GNULIB_POSIXCHECK
841 # if HAVE_RAW_DECL_TANL
842 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
843 "use gnulib module mathl for portability");
849 # if @REPLACE_TRUNCF@
850 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
851 # define truncf rpl_truncf
853 _GL_FUNCDECL_RPL (truncf, float, (float x));
854 _GL_CXXALIAS_RPL (truncf, float, (float x));
856 # if !@HAVE_DECL_TRUNCF@
857 _GL_FUNCDECL_SYS (truncf, float, (float x));
859 _GL_CXXALIAS_SYS (truncf, float, (float x));
861 _GL_CXXALIASWARN (truncf);
862 #elif defined GNULIB_POSIXCHECK
864 # if HAVE_RAW_DECL_TRUNCF
865 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
866 "use gnulib module truncf for portability");
872 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
873 # define trunc rpl_trunc
875 _GL_FUNCDECL_RPL (trunc, double, (double x));
876 _GL_CXXALIAS_RPL (trunc, double, (double x));
878 # if !@HAVE_DECL_TRUNC@
879 _GL_FUNCDECL_SYS (trunc, double, (double x));
881 _GL_CXXALIAS_SYS (trunc, double, (double x));
883 _GL_CXXALIASWARN (trunc);
884 #elif defined GNULIB_POSIXCHECK
886 # if HAVE_RAW_DECL_TRUNC
887 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
888 "use gnulib module trunc for portability");
893 # if @REPLACE_TRUNCL@
894 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
896 # define truncl rpl_truncl
898 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
899 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
901 # if !@HAVE_DECL_TRUNCL@
902 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
904 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
906 _GL_CXXALIASWARN (truncl);
907 #elif defined GNULIB_POSIXCHECK
909 # if HAVE_RAW_DECL_TRUNCL
910 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
911 "use gnulib module truncl for portability");
916 /* Definitions of function-like macros come here, after the function
920 #if @GNULIB_ISFINITE@
921 # if @REPLACE_ISFINITE@
922 _GL_EXTERN_C int gl_isfinitef (float x);
923 _GL_EXTERN_C int gl_isfinited (double x);
924 _GL_EXTERN_C int gl_isfinitel (long double x);
926 # define isfinite(x) \
927 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
928 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
931 #elif defined GNULIB_POSIXCHECK
932 # if defined isfinite
933 _GL_WARN_REAL_FLOATING_DECL (isfinite);
935 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
942 _GL_EXTERN_C int gl_isinff (float x);
943 _GL_EXTERN_C int gl_isinfd (double x);
944 _GL_EXTERN_C int gl_isinfl (long double x);
947 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
948 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
951 #elif defined GNULIB_POSIXCHECK
953 _GL_WARN_REAL_FLOATING_DECL (isinf);
955 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
961 /* Test for NaN for 'float' numbers. */
963 /* The original <math.h> included above provides a declaration of isnan macro
964 or (older) isnanf function. */
966 /* GCC 4.0 and newer provides three built-ins for isnan. */
968 # define isnanf(x) __builtin_isnanf ((float)(x))
971 # define isnanf(x) isnan ((float)(x))
974 /* Test whether X is a NaN. */
976 # define isnanf rpl_isnanf
977 _GL_EXTERN_C int isnanf (float x);
982 /* Test for NaN for 'double' numbers.
983 This function is a gnulib extension, unlike isnan() which applied only
984 to 'double' numbers earlier but now is a type-generic macro. */
986 /* The original <math.h> included above provides a declaration of isnan
989 /* GCC 4.0 and newer provides three built-ins for isnan. */
991 # define isnand(x) __builtin_isnan ((double)(x))
994 # define isnand(x) isnan ((double)(x))
997 /* Test whether X is a NaN. */
999 # define isnand rpl_isnand
1000 _GL_EXTERN_C int isnand (double x);
1005 /* Test for NaN for 'long double' numbers. */
1007 /* The original <math.h> included above provides a declaration of isnan
1008 macro or (older) isnanl function. */
1010 /* GCC 4.0 and newer provides three built-ins for isnan. */
1012 # define isnanl(x) __builtin_isnanl ((long double)(x))
1013 # elif defined isnan
1015 # define isnanl(x) isnan ((long double)(x))
1018 /* Test whether X is a NaN. */
1020 # define isnanl rpl_isnanl
1021 _GL_EXTERN_C int isnanl (long double x);
1025 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1027 # if @REPLACE_ISNAN@
1028 /* We can't just use the isnanf macro (e.g.) as exposed by
1029 isnanf.h (e.g.) here, because those may end up being macros
1030 that recursively expand back to isnan. So use the gnulib
1031 replacements for them directly. */
1032 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1033 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1035 _GL_EXTERN_C int rpl_isnanf (float x);
1036 # define gl_isnan_f(x) rpl_isnanf (x)
1038 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1039 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1041 _GL_EXTERN_C int rpl_isnand (double x);
1042 # define gl_isnan_d(x) rpl_isnand (x)
1044 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1045 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1047 _GL_EXTERN_C int rpl_isnanl (long double x);
1048 # define gl_isnan_l(x) rpl_isnanl (x)
1052 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1053 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1055 # elif __GNUC__ >= 4
1058 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1059 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1060 __builtin_isnanf ((float)(x)))
1062 /* Ensure isnan is a macro. */
1064 # define isnan isnan
1066 #elif defined GNULIB_POSIXCHECK
1068 _GL_WARN_REAL_FLOATING_DECL (isnan);
1070 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1075 #if @GNULIB_SIGNBIT@
1076 # if @REPLACE_SIGNBIT_USING_GCC@
1078 /* GCC 4.0 and newer provides three built-ins for signbit. */
1079 # define signbit(x) \
1080 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1081 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1082 __builtin_signbitf (x))
1084 # if @REPLACE_SIGNBIT@
1086 _GL_EXTERN_C int gl_signbitf (float arg);
1087 _GL_EXTERN_C int gl_signbitd (double arg);
1088 _GL_EXTERN_C int gl_signbitl (long double arg);
1089 # if __GNUC__ >= 2 && !__STRICT_ANSI__
1090 # define _GL_NUM_UINT_WORDS(type) \
1091 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1092 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1093 # define gl_signbitf_OPTIMIZED_MACRO
1094 # define gl_signbitf(arg) \
1095 ({ union { float _value; \
1096 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1098 _m._value = (arg); \
1099 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1102 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1103 # define gl_signbitd_OPTIMIZED_MACRO
1104 # define gl_signbitd(arg) \
1105 ({ union { double _value; \
1106 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1108 _m._value = (arg); \
1109 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1112 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1113 # define gl_signbitl_OPTIMIZED_MACRO
1114 # define gl_signbitl(arg) \
1115 ({ union { long double _value; \
1116 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1118 _m._value = (arg); \
1119 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1123 # define signbit(x) \
1124 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1125 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1128 #elif defined GNULIB_POSIXCHECK
1129 # if defined signbit
1130 _GL_WARN_REAL_FLOATING_DECL (signbit);
1132 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1137 #endif /* _@GUARD_PREFIX@_MATH_H */
1138 #endif /* _@GUARD_PREFIX@_MATH_H */