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 (expf, float, (float x));
312 _GL_CXXALIAS_SYS (expf, float, (float x));
313 _GL_CXXALIASWARN (expf);
314 #elif defined GNULIB_POSIXCHECK
316 # if HAVE_RAW_DECL_EXPF
317 _GL_WARN_ON_USE (expf, "expf is unportable - "
318 "use gnulib module expf for portability");
323 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
324 _GL_FUNCDECL_SYS (expl, long double, (long double x));
326 _GL_CXXALIAS_SYS (expl, long double, (long double x));
327 _GL_CXXALIASWARN (expl);
328 #elif defined GNULIB_POSIXCHECK
330 # if HAVE_RAW_DECL_EXPL
331 _GL_WARN_ON_USE (expl, "expl is unportable - "
332 "use gnulib module mathl for portability");
340 _GL_FUNCDECL_SYS (fabsf, float, (float x));
342 _GL_CXXALIAS_SYS (fabsf, float, (float x));
343 _GL_CXXALIASWARN (fabsf);
344 #elif defined GNULIB_POSIXCHECK
346 # if HAVE_RAW_DECL_FABSF
347 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
348 "use gnulib module fabsf for portability");
354 # if @REPLACE_FLOORF@
355 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
357 # define floorf rpl_floorf
359 _GL_FUNCDECL_RPL (floorf, float, (float x));
360 _GL_CXXALIAS_RPL (floorf, float, (float x));
362 # if !@HAVE_DECL_FLOORF@
363 _GL_FUNCDECL_SYS (floorf, float, (float x));
365 _GL_CXXALIAS_SYS (floorf, float, (float x));
367 _GL_CXXALIASWARN (floorf);
368 #elif defined GNULIB_POSIXCHECK
370 # if HAVE_RAW_DECL_FLOORF
371 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
372 "use gnulib module floorf for portability");
378 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
379 # define floor rpl_floor
381 _GL_FUNCDECL_RPL (floor, double, (double x));
382 _GL_CXXALIAS_RPL (floor, double, (double x));
384 _GL_CXXALIAS_SYS (floor, double, (double x));
386 _GL_CXXALIASWARN (floor);
390 # if @REPLACE_FLOORL@
391 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
393 # define floorl rpl_floorl
395 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
396 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
398 # if !@HAVE_DECL_FLOORL@
399 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
401 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
403 _GL_CXXALIASWARN (floorl);
404 #elif defined GNULIB_POSIXCHECK
406 # if HAVE_RAW_DECL_FLOORL
407 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
408 "use gnulib module floorl for portability");
416 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
418 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
419 _GL_CXXALIASWARN (fmodf);
420 #elif defined GNULIB_POSIXCHECK
422 # if HAVE_RAW_DECL_FMODF
423 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
424 "use gnulib module fmodf for portability");
432 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
433 If x is zero: mantissa = x, exp = 0.
434 If x is infinite or NaN: mantissa = x, exp unspecified.
435 Store exp in *EXPPTR and return mantissa. */
437 # if @REPLACE_FREXPF@
438 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
440 # define frexpf rpl_frexpf
442 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
443 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
447 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
449 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
451 _GL_CXXALIASWARN (frexpf);
452 #elif defined GNULIB_POSIXCHECK
454 # if HAVE_RAW_DECL_FREXPF
455 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
456 "use gnulib module frexpf 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. */
469 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
470 # define frexp rpl_frexp
472 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
473 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
475 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
477 _GL_CXXALIASWARN (frexp);
478 #elif defined GNULIB_POSIXCHECK
480 /* Assume frexp is always declared. */
481 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
482 "use gnulib module frexp for portability");
488 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
489 If x is zero: mantissa = x, exp = 0.
490 If x is infinite or NaN: mantissa = x, exp unspecified.
491 Store exp in *EXPPTR and return mantissa. */
492 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
493 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
495 # define frexpl rpl_frexpl
497 _GL_FUNCDECL_RPL (frexpl, long double,
498 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
499 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
501 # if !@HAVE_DECL_FREXPL@
502 _GL_FUNCDECL_SYS (frexpl, long double,
503 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
506 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
509 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
510 _GL_CXXALIASWARN (frexpl);
512 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
514 # if HAVE_RAW_DECL_FREXPL
515 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
516 "use gnulib module frexpl for portability");
521 /* Return x * 2^exp. */
525 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
527 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
528 _GL_CXXALIASWARN (ldexpf);
529 #elif defined GNULIB_POSIXCHECK
531 # if HAVE_RAW_DECL_LDEXPF
532 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
533 "use gnulib module ldexpf for portability");
537 /* Return x * 2^exp. */
538 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
539 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
541 # define ldexpl rpl_ldexpl
543 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
544 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
546 # if !@HAVE_DECL_LDEXPL@
547 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
550 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
554 _GL_CXXALIASWARN (ldexpl);
556 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
558 # if HAVE_RAW_DECL_LDEXPL
559 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
560 "use gnulib module ldexpl for portability");
566 # if !@HAVE_DECL_LOGB@
567 _GL_EXTERN_C double logb (double x);
569 #elif defined GNULIB_POSIXCHECK
571 # if HAVE_RAW_DECL_LOGB
572 _GL_WARN_ON_USE (logb, "logb is unportable - "
573 "use gnulib module logb for portability");
581 _GL_FUNCDECL_SYS (logf, float, (float x));
583 _GL_CXXALIAS_SYS (logf, float, (float x));
584 _GL_CXXALIASWARN (logf);
585 #elif defined GNULIB_POSIXCHECK
587 # if HAVE_RAW_DECL_LOGF
588 _GL_WARN_ON_USE (logf, "logf is unportable - "
589 "use gnulib module logf for portability");
594 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
595 _GL_FUNCDECL_SYS (logl, long double, (long double x));
597 _GL_CXXALIAS_SYS (logl, long double, (long double x));
598 _GL_CXXALIASWARN (logl);
599 #elif defined GNULIB_POSIXCHECK
601 # if HAVE_RAW_DECL_LOGL
602 _GL_WARN_ON_USE (logl, "logl is unportable - "
603 "use gnulib module mathl for portability");
611 _GL_FUNCDECL_SYS (log10f, float, (float x));
613 _GL_CXXALIAS_SYS (log10f, float, (float x));
614 _GL_CXXALIASWARN (log10f);
615 #elif defined GNULIB_POSIXCHECK
617 # if HAVE_RAW_DECL_LOG10F
618 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
619 "use gnulib module log10f for portability");
627 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
629 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
630 _GL_CXXALIASWARN (modff);
631 #elif defined GNULIB_POSIXCHECK
633 # if HAVE_RAW_DECL_MODFF
634 _GL_WARN_ON_USE (modff, "modff is unportable - "
635 "use gnulib module modff for portability");
643 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
645 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
646 _GL_CXXALIASWARN (powf);
647 #elif defined GNULIB_POSIXCHECK
649 # if HAVE_RAW_DECL_POWF
650 _GL_WARN_ON_USE (powf, "powf is unportable - "
651 "use gnulib module powf for portability");
657 # if @REPLACE_ROUNDF@
658 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
660 # define roundf rpl_roundf
662 _GL_FUNCDECL_RPL (roundf, float, (float x));
663 _GL_CXXALIAS_RPL (roundf, float, (float x));
665 # if !@HAVE_DECL_ROUNDF@
666 _GL_FUNCDECL_SYS (roundf, float, (float x));
668 _GL_CXXALIAS_SYS (roundf, float, (float x));
670 _GL_CXXALIASWARN (roundf);
671 #elif defined GNULIB_POSIXCHECK
673 # if HAVE_RAW_DECL_ROUNDF
674 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
675 "use gnulib module roundf for portability");
681 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
683 # define round rpl_round
685 _GL_FUNCDECL_RPL (round, double, (double x));
686 _GL_CXXALIAS_RPL (round, double, (double x));
688 # if !@HAVE_DECL_ROUND@
689 _GL_FUNCDECL_SYS (round, double, (double x));
691 _GL_CXXALIAS_SYS (round, double, (double x));
693 _GL_CXXALIASWARN (round);
694 #elif defined GNULIB_POSIXCHECK
696 # if HAVE_RAW_DECL_ROUND
697 _GL_WARN_ON_USE (round, "round is unportable - "
698 "use gnulib module round for portability");
703 # if @REPLACE_ROUNDL@
704 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
706 # define roundl rpl_roundl
708 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
709 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
711 # if !@HAVE_DECL_ROUNDL@
712 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
714 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
716 _GL_CXXALIASWARN (roundl);
717 #elif defined GNULIB_POSIXCHECK
719 # if HAVE_RAW_DECL_ROUNDL
720 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
721 "use gnulib module roundl for portability");
729 _GL_FUNCDECL_SYS (sinf, float, (float x));
731 _GL_CXXALIAS_SYS (sinf, float, (float x));
732 _GL_CXXALIASWARN (sinf);
733 #elif defined GNULIB_POSIXCHECK
735 # if HAVE_RAW_DECL_SINF
736 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
737 "use gnulib module sinf for portability");
742 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
743 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
745 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
746 _GL_CXXALIASWARN (sinl);
747 #elif defined GNULIB_POSIXCHECK
749 # if HAVE_RAW_DECL_SINL
750 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
751 "use gnulib module mathl for portability");
759 _GL_FUNCDECL_SYS (sinhf, float, (float x));
761 _GL_CXXALIAS_SYS (sinhf, float, (float x));
762 _GL_CXXALIASWARN (sinhf);
763 #elif defined GNULIB_POSIXCHECK
765 # if HAVE_RAW_DECL_SINHF
766 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
767 "use gnulib module sinhf for portability");
775 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
777 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
778 _GL_CXXALIASWARN (sqrtf);
779 #elif defined GNULIB_POSIXCHECK
781 # if HAVE_RAW_DECL_SQRTF
782 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
783 "use gnulib module sqrtf for portability");
788 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
789 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
791 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
792 _GL_CXXALIASWARN (sqrtl);
793 #elif defined GNULIB_POSIXCHECK
795 # if HAVE_RAW_DECL_SQRTL
796 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
797 "use gnulib module mathl for portability");
805 _GL_FUNCDECL_SYS (tanf, float, (float x));
807 _GL_CXXALIAS_SYS (tanf, float, (float x));
808 _GL_CXXALIASWARN (tanf);
809 #elif defined GNULIB_POSIXCHECK
811 # if HAVE_RAW_DECL_TANF
812 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
813 "use gnulib module tanf for portability");
818 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
819 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
821 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
822 _GL_CXXALIASWARN (tanl);
823 #elif defined GNULIB_POSIXCHECK
825 # if HAVE_RAW_DECL_TANL
826 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
827 "use gnulib module mathl for portability");
833 # if @REPLACE_TRUNCF@
834 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
835 # define truncf rpl_truncf
837 _GL_FUNCDECL_RPL (truncf, float, (float x));
838 _GL_CXXALIAS_RPL (truncf, float, (float x));
840 # if !@HAVE_DECL_TRUNCF@
841 _GL_FUNCDECL_SYS (truncf, float, (float x));
843 _GL_CXXALIAS_SYS (truncf, float, (float x));
845 _GL_CXXALIASWARN (truncf);
846 #elif defined GNULIB_POSIXCHECK
848 # if HAVE_RAW_DECL_TRUNCF
849 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
850 "use gnulib module truncf for portability");
856 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
857 # define trunc rpl_trunc
859 _GL_FUNCDECL_RPL (trunc, double, (double x));
860 _GL_CXXALIAS_RPL (trunc, double, (double x));
862 # if !@HAVE_DECL_TRUNC@
863 _GL_FUNCDECL_SYS (trunc, double, (double x));
865 _GL_CXXALIAS_SYS (trunc, double, (double x));
867 _GL_CXXALIASWARN (trunc);
868 #elif defined GNULIB_POSIXCHECK
870 # if HAVE_RAW_DECL_TRUNC
871 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
872 "use gnulib module trunc for portability");
877 # if @REPLACE_TRUNCL@
878 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
880 # define truncl rpl_truncl
882 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
883 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
885 # if !@HAVE_DECL_TRUNCL@
886 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
888 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
890 _GL_CXXALIASWARN (truncl);
891 #elif defined GNULIB_POSIXCHECK
893 # if HAVE_RAW_DECL_TRUNCL
894 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
895 "use gnulib module truncl for portability");
900 /* Definitions of function-like macros come here, after the function
904 #if @GNULIB_ISFINITE@
905 # if @REPLACE_ISFINITE@
906 _GL_EXTERN_C int gl_isfinitef (float x);
907 _GL_EXTERN_C int gl_isfinited (double x);
908 _GL_EXTERN_C int gl_isfinitel (long double x);
910 # define isfinite(x) \
911 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
912 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
915 #elif defined GNULIB_POSIXCHECK
916 # if defined isfinite
917 _GL_WARN_REAL_FLOATING_DECL (isfinite);
919 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
926 _GL_EXTERN_C int gl_isinff (float x);
927 _GL_EXTERN_C int gl_isinfd (double x);
928 _GL_EXTERN_C int gl_isinfl (long double x);
931 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
932 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
935 #elif defined GNULIB_POSIXCHECK
937 _GL_WARN_REAL_FLOATING_DECL (isinf);
939 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
945 /* Test for NaN for 'float' numbers. */
947 /* The original <math.h> included above provides a declaration of isnan macro
948 or (older) isnanf function. */
950 /* GCC 4.0 and newer provides three built-ins for isnan. */
952 # define isnanf(x) __builtin_isnanf ((float)(x))
955 # define isnanf(x) isnan ((float)(x))
958 /* Test whether X is a NaN. */
960 # define isnanf rpl_isnanf
961 _GL_EXTERN_C int isnanf (float x);
966 /* Test for NaN for 'double' numbers.
967 This function is a gnulib extension, unlike isnan() which applied only
968 to 'double' numbers earlier but now is a type-generic macro. */
970 /* The original <math.h> included above provides a declaration of isnan
973 /* GCC 4.0 and newer provides three built-ins for isnan. */
975 # define isnand(x) __builtin_isnan ((double)(x))
978 # define isnand(x) isnan ((double)(x))
981 /* Test whether X is a NaN. */
983 # define isnand rpl_isnand
984 _GL_EXTERN_C int isnand (double x);
989 /* Test for NaN for 'long double' numbers. */
991 /* The original <math.h> included above provides a declaration of isnan
992 macro or (older) isnanl function. */
994 /* GCC 4.0 and newer provides three built-ins for isnan. */
996 # define isnanl(x) __builtin_isnanl ((long double)(x))
999 # define isnanl(x) isnan ((long double)(x))
1002 /* Test whether X is a NaN. */
1004 # define isnanl rpl_isnanl
1005 _GL_EXTERN_C int isnanl (long double x);
1009 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1011 # if @REPLACE_ISNAN@
1012 /* We can't just use the isnanf macro (e.g.) as exposed by
1013 isnanf.h (e.g.) here, because those may end up being macros
1014 that recursively expand back to isnan. So use the gnulib
1015 replacements for them directly. */
1016 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1017 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1019 _GL_EXTERN_C int rpl_isnanf (float x);
1020 # define gl_isnan_f(x) rpl_isnanf (x)
1022 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1023 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1025 _GL_EXTERN_C int rpl_isnand (double x);
1026 # define gl_isnan_d(x) rpl_isnand (x)
1028 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1029 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1031 _GL_EXTERN_C int rpl_isnanl (long double x);
1032 # define gl_isnan_l(x) rpl_isnanl (x)
1036 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1037 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1039 # elif __GNUC__ >= 4
1042 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1043 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1044 __builtin_isnanf ((float)(x)))
1046 /* Ensure isnan is a macro. */
1048 # define isnan isnan
1050 #elif defined GNULIB_POSIXCHECK
1052 _GL_WARN_REAL_FLOATING_DECL (isnan);
1054 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1059 #if @GNULIB_SIGNBIT@
1060 # if @REPLACE_SIGNBIT_USING_GCC@
1062 /* GCC 4.0 and newer provides three built-ins for signbit. */
1063 # define signbit(x) \
1064 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1065 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1066 __builtin_signbitf (x))
1068 # if @REPLACE_SIGNBIT@
1070 _GL_EXTERN_C int gl_signbitf (float arg);
1071 _GL_EXTERN_C int gl_signbitd (double arg);
1072 _GL_EXTERN_C int gl_signbitl (long double arg);
1073 # if __GNUC__ >= 2 && !__STRICT_ANSI__
1074 # define _GL_NUM_UINT_WORDS(type) \
1075 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1076 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1077 # define gl_signbitf_OPTIMIZED_MACRO
1078 # define gl_signbitf(arg) \
1079 ({ union { float _value; \
1080 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1082 _m._value = (arg); \
1083 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1086 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1087 # define gl_signbitd_OPTIMIZED_MACRO
1088 # define gl_signbitd(arg) \
1089 ({ union { double _value; \
1090 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1092 _m._value = (arg); \
1093 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1096 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1097 # define gl_signbitl_OPTIMIZED_MACRO
1098 # define gl_signbitl(arg) \
1099 ({ union { long double _value; \
1100 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1102 _m._value = (arg); \
1103 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1107 # define signbit(x) \
1108 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1109 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1112 #elif defined GNULIB_POSIXCHECK
1113 # if defined signbit
1114 _GL_WARN_REAL_FLOATING_DECL (signbit);
1116 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1121 #endif /* _@GUARD_PREFIX@_MATH_H */
1122 #endif /* _@GUARD_PREFIX@_MATH_H */