1 /* A GNU-like <math.h>.
3 Copyright (C) 2002-2003, 2007-2012 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. */
39 /* Helper macros to define type-generic function FUNC as overloaded functions,
40 rather than as macros like in C. POSIX declares these with an argument of
41 real-floating (that is, one of float, double, or long double). */
42 # define _GL_MATH_CXX_REAL_FLOATING_DECL_1(func) \
44 _gl_cxx_ ## func ## f (float f) \
49 _gl_cxx_ ## func ## d (double d) \
54 _gl_cxx_ ## func ## l (long double l) \
58 # define _GL_MATH_CXX_REAL_FLOATING_DECL_2(func) \
62 return _gl_cxx_ ## func ## f (f); \
67 return _gl_cxx_ ## func ## d (d); \
70 func (long double l) \
72 return _gl_cxx_ ## func ## l (l); \
76 /* Helper macros to define a portability warning for the
77 classification macro FUNC called with VALUE. POSIX declares the
78 classification macros with an argument of real-floating (that is,
79 one of float, double, or long double). */
80 #define _GL_WARN_REAL_FLOATING_DECL(func) \
82 rpl_ ## func ## f (float f) \
87 rpl_ ## func ## d (double d) \
92 rpl_ ## func ## l (long double l) \
96 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \
97 "use gnulib module " #func " for portability"); \
98 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \
99 "use gnulib module " #func " for portability"); \
100 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \
101 "use gnulib module " #func " for portability")
102 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
103 (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \
104 : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \
105 : rpl_ ## func ## l (value))
109 /* Pull in a function that fixes the 'int' to 'long double' conversion
111 _GL_EXTERN_C void _Qp_itoq (long double *, int);
112 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
116 /* POSIX allows platforms that don't support NAN. But all major
117 machines in the past 15 years have supported something close to
118 IEEE NaN, so we define this unconditionally. We also must define
119 it on platforms like Solaris 10, where NAN is present but defined
120 as a function pointer rather than a floating point constant. */
121 #if !defined NAN || @REPLACE_NAN@
122 # if !GNULIB_defined_NAN
124 /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
125 choke on the expression 0.0 / 0.0. */
126 # if defined __DECC || defined _MSC_VER
130 static float zero = 0.0f;
133 # define NAN (_NaN())
135 # define NAN (0.0f / 0.0f)
137 # define GNULIB_defined_NAN 1
141 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
142 than a floating point constant. */
143 #if @REPLACE_HUGE_VAL@
145 # define HUGE_VAL (1.0 / 0.0)
152 _GL_FUNCDECL_SYS (acosf, float, (float x));
154 _GL_CXXALIAS_SYS (acosf, float, (float x));
155 _GL_CXXALIASWARN (acosf);
156 #elif defined GNULIB_POSIXCHECK
158 # if HAVE_RAW_DECL_ACOSF
159 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
160 "use gnulib module acosf for portability");
165 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
166 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
168 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
169 _GL_CXXALIASWARN (acosl);
170 #elif defined GNULIB_POSIXCHECK
172 # if HAVE_RAW_DECL_ACOSL
173 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
174 "use gnulib module mathl for portability");
182 _GL_FUNCDECL_SYS (asinf, float, (float x));
184 _GL_CXXALIAS_SYS (asinf, float, (float x));
185 _GL_CXXALIASWARN (asinf);
186 #elif defined GNULIB_POSIXCHECK
188 # if HAVE_RAW_DECL_ASINF
189 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
190 "use gnulib module asinf for portability");
195 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
196 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
198 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
199 _GL_CXXALIASWARN (asinl);
200 #elif defined GNULIB_POSIXCHECK
202 # if HAVE_RAW_DECL_ASINL
203 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
204 "use gnulib module mathl for portability");
212 _GL_FUNCDECL_SYS (atanf, float, (float x));
214 _GL_CXXALIAS_SYS (atanf, float, (float x));
215 _GL_CXXALIASWARN (atanf);
216 #elif defined GNULIB_POSIXCHECK
218 # if HAVE_RAW_DECL_ATANF
219 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
220 "use gnulib module atanf for portability");
225 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
226 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
228 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
229 _GL_CXXALIASWARN (atanl);
230 #elif defined GNULIB_POSIXCHECK
232 # if HAVE_RAW_DECL_ATANL
233 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
234 "use gnulib module mathl for portability");
242 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
244 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
245 _GL_CXXALIASWARN (atan2f);
246 #elif defined GNULIB_POSIXCHECK
248 # if HAVE_RAW_DECL_ATAN2F
249 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
250 "use gnulib module atan2f for portability");
257 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
259 # define ceilf rpl_ceilf
261 _GL_FUNCDECL_RPL (ceilf, float, (float x));
262 _GL_CXXALIAS_RPL (ceilf, float, (float x));
264 # if !@HAVE_DECL_CEILF@
266 _GL_FUNCDECL_SYS (ceilf, float, (float x));
268 _GL_CXXALIAS_SYS (ceilf, float, (float x));
270 _GL_CXXALIASWARN (ceilf);
271 #elif defined GNULIB_POSIXCHECK
273 # if HAVE_RAW_DECL_CEILF
274 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
275 "use gnulib module ceilf for portability");
281 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
282 # define ceil rpl_ceil
284 _GL_FUNCDECL_RPL (ceil, double, (double x));
285 _GL_CXXALIAS_RPL (ceil, double, (double x));
287 _GL_CXXALIAS_SYS (ceil, double, (double x));
289 _GL_CXXALIASWARN (ceil);
294 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
296 # define ceill rpl_ceill
298 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
299 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
301 # if !@HAVE_DECL_CEILL@
303 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
305 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
307 _GL_CXXALIASWARN (ceill);
308 #elif defined GNULIB_POSIXCHECK
310 # if HAVE_RAW_DECL_CEILL
311 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
312 "use gnulib module ceill for portability");
317 #if @GNULIB_COPYSIGNF@
318 # if !@HAVE_COPYSIGNF@
319 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
321 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
322 _GL_CXXALIASWARN (copysignf);
323 #elif defined GNULIB_POSIXCHECK
325 # if HAVE_RAW_DECL_COPYSIGNF
326 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
327 "use gnulib module copysignf for portability");
331 #if @GNULIB_COPYSIGN@
332 # if !@HAVE_COPYSIGN@
333 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
335 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
336 _GL_CXXALIASWARN (copysign);
337 #elif defined GNULIB_POSIXCHECK
339 # if HAVE_RAW_DECL_COPYSIGN
340 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
341 "use gnulib module copysign for portability");
345 #if @GNULIB_COPYSIGNL@
346 # if !@HAVE_COPYSIGNL@
347 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
349 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
350 _GL_CXXALIASWARN (copysignl);
351 #elif defined GNULIB_POSIXCHECK
353 # if HAVE_RAW_DECL_COPYSIGNL
354 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
355 "use gnulib module copysignl for portability");
363 _GL_FUNCDECL_SYS (cosf, float, (float x));
365 _GL_CXXALIAS_SYS (cosf, float, (float x));
366 _GL_CXXALIASWARN (cosf);
367 #elif defined GNULIB_POSIXCHECK
369 # if HAVE_RAW_DECL_COSF
370 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
371 "use gnulib module cosf for portability");
376 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
377 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
379 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
380 _GL_CXXALIASWARN (cosl);
381 #elif defined GNULIB_POSIXCHECK
383 # if HAVE_RAW_DECL_COSL
384 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
385 "use gnulib module mathl for portability");
393 _GL_FUNCDECL_SYS (coshf, float, (float x));
395 _GL_CXXALIAS_SYS (coshf, float, (float x));
396 _GL_CXXALIASWARN (coshf);
397 #elif defined GNULIB_POSIXCHECK
399 # if HAVE_RAW_DECL_COSHF
400 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
401 "use gnulib module coshf for portability");
409 _GL_FUNCDECL_SYS (expf, float, (float x));
411 _GL_CXXALIAS_SYS (expf, float, (float x));
412 _GL_CXXALIASWARN (expf);
413 #elif defined GNULIB_POSIXCHECK
415 # if HAVE_RAW_DECL_EXPF
416 _GL_WARN_ON_USE (expf, "expf is unportable - "
417 "use gnulib module expf for portability");
422 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
423 _GL_FUNCDECL_SYS (expl, long double, (long double x));
425 _GL_CXXALIAS_SYS (expl, long double, (long double x));
426 _GL_CXXALIASWARN (expl);
427 #elif defined GNULIB_POSIXCHECK
429 # if HAVE_RAW_DECL_EXPL
430 _GL_WARN_ON_USE (expl, "expl is unportable - "
431 "use gnulib module mathl for portability");
439 _GL_FUNCDECL_SYS (fabsf, float, (float x));
441 _GL_CXXALIAS_SYS (fabsf, float, (float x));
442 _GL_CXXALIASWARN (fabsf);
443 #elif defined GNULIB_POSIXCHECK
445 # if HAVE_RAW_DECL_FABSF
446 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
447 "use gnulib module fabsf for portability");
453 # if @REPLACE_FLOORF@
454 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
456 # define floorf rpl_floorf
458 _GL_FUNCDECL_RPL (floorf, float, (float x));
459 _GL_CXXALIAS_RPL (floorf, float, (float x));
461 # if !@HAVE_DECL_FLOORF@
463 _GL_FUNCDECL_SYS (floorf, float, (float x));
465 _GL_CXXALIAS_SYS (floorf, float, (float x));
467 _GL_CXXALIASWARN (floorf);
468 #elif defined GNULIB_POSIXCHECK
470 # if HAVE_RAW_DECL_FLOORF
471 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
472 "use gnulib module floorf for portability");
478 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
479 # define floor rpl_floor
481 _GL_FUNCDECL_RPL (floor, double, (double x));
482 _GL_CXXALIAS_RPL (floor, double, (double x));
484 _GL_CXXALIAS_SYS (floor, double, (double x));
486 _GL_CXXALIASWARN (floor);
490 # if @REPLACE_FLOORL@
491 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
493 # define floorl rpl_floorl
495 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
496 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
498 # if !@HAVE_DECL_FLOORL@
500 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
502 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
504 _GL_CXXALIASWARN (floorl);
505 #elif defined GNULIB_POSIXCHECK
507 # if HAVE_RAW_DECL_FLOORL
508 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
509 "use gnulib module floorl for portability");
516 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
518 # define fmaf rpl_fmaf
520 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
521 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
524 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
526 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
528 _GL_CXXALIASWARN (fmaf);
529 #elif defined GNULIB_POSIXCHECK
531 # if HAVE_RAW_DECL_FMAF
532 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
533 "use gnulib module fmaf for portability");
539 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
543 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
544 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
547 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
549 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
551 _GL_CXXALIASWARN (fma);
552 #elif defined GNULIB_POSIXCHECK
554 # if HAVE_RAW_DECL_FMA
555 _GL_WARN_ON_USE (fma, "fma is unportable - "
556 "use gnulib module fma for portability");
562 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
564 # define fmal rpl_fmal
566 _GL_FUNCDECL_RPL (fmal, long double,
567 (long double x, long double y, long double z));
568 _GL_CXXALIAS_RPL (fmal, long double,
569 (long double x, long double y, long double z));
572 _GL_FUNCDECL_SYS (fmal, long double,
573 (long double x, long double y, long double z));
575 _GL_CXXALIAS_SYS (fmal, long double,
576 (long double x, long double y, long double z));
578 _GL_CXXALIASWARN (fmal);
579 #elif defined GNULIB_POSIXCHECK
581 # if HAVE_RAW_DECL_FMAL
582 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
583 "use gnulib module fmal for portability");
591 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
593 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
594 _GL_CXXALIASWARN (fmodf);
595 #elif defined GNULIB_POSIXCHECK
597 # if HAVE_RAW_DECL_FMODF
598 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
599 "use gnulib module fmodf for portability");
607 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
608 If x is zero: mantissa = x, exp = 0.
609 If x is infinite or NaN: mantissa = x, exp unspecified.
610 Store exp in *EXPPTR and return mantissa. */
612 # if @REPLACE_FREXPF@
613 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
615 # define frexpf rpl_frexpf
617 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
618 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
622 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
624 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
626 _GL_CXXALIASWARN (frexpf);
627 #elif defined GNULIB_POSIXCHECK
629 # if HAVE_RAW_DECL_FREXPF
630 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
631 "use gnulib module frexpf for portability");
638 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
639 If x is zero: mantissa = x, exp = 0.
640 If x is infinite or NaN: mantissa = x, exp unspecified.
641 Store exp in *EXPPTR and return mantissa. */
644 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
645 # define frexp rpl_frexp
647 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
648 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
650 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
652 _GL_CXXALIASWARN (frexp);
653 #elif defined GNULIB_POSIXCHECK
655 /* Assume frexp is always declared. */
656 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
657 "use gnulib module frexp for portability");
663 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
664 If x is zero: mantissa = x, exp = 0.
665 If x is infinite or NaN: mantissa = x, exp unspecified.
666 Store exp in *EXPPTR and return mantissa. */
667 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
668 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
670 # define frexpl rpl_frexpl
672 _GL_FUNCDECL_RPL (frexpl, long double,
673 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
674 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
676 # if !@HAVE_DECL_FREXPL@
677 _GL_FUNCDECL_SYS (frexpl, long double,
678 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
681 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
684 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
685 _GL_CXXALIASWARN (frexpl);
687 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
689 # if HAVE_RAW_DECL_FREXPL
690 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
691 "use gnulib module frexpl for portability");
696 /* Return x * 2^exp. */
700 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
702 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
703 _GL_CXXALIASWARN (ldexpf);
704 #elif defined GNULIB_POSIXCHECK
706 # if HAVE_RAW_DECL_LDEXPF
707 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
708 "use gnulib module ldexpf for portability");
712 /* Return x * 2^exp. */
713 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
714 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
716 # define ldexpl rpl_ldexpl
718 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
719 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
721 # if !@HAVE_DECL_LDEXPL@
722 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
725 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
729 _GL_CXXALIASWARN (ldexpl);
731 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
733 # if HAVE_RAW_DECL_LDEXPL
734 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
735 "use gnulib module ldexpl for portability");
741 # if !@HAVE_DECL_LOGB@
742 _GL_EXTERN_C double logb (double x);
744 #elif defined GNULIB_POSIXCHECK
746 # if HAVE_RAW_DECL_LOGB
747 _GL_WARN_ON_USE (logb, "logb is unportable - "
748 "use gnulib module logb for portability");
756 _GL_FUNCDECL_SYS (logf, float, (float x));
758 _GL_CXXALIAS_SYS (logf, float, (float x));
759 _GL_CXXALIASWARN (logf);
760 #elif defined GNULIB_POSIXCHECK
762 # if HAVE_RAW_DECL_LOGF
763 _GL_WARN_ON_USE (logf, "logf is unportable - "
764 "use gnulib module logf for portability");
769 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
770 _GL_FUNCDECL_SYS (logl, long double, (long double x));
772 _GL_CXXALIAS_SYS (logl, long double, (long double x));
773 _GL_CXXALIASWARN (logl);
774 #elif defined GNULIB_POSIXCHECK
776 # if HAVE_RAW_DECL_LOGL
777 _GL_WARN_ON_USE (logl, "logl is unportable - "
778 "use gnulib module mathl for portability");
786 _GL_FUNCDECL_SYS (log10f, float, (float x));
788 _GL_CXXALIAS_SYS (log10f, float, (float x));
789 _GL_CXXALIASWARN (log10f);
790 #elif defined GNULIB_POSIXCHECK
792 # if HAVE_RAW_DECL_LOG10F
793 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
794 "use gnulib module log10f for portability");
802 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
804 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
805 _GL_CXXALIASWARN (modff);
806 #elif defined GNULIB_POSIXCHECK
808 # if HAVE_RAW_DECL_MODFF
809 _GL_WARN_ON_USE (modff, "modff is unportable - "
810 "use gnulib module modff for portability");
818 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
820 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
821 _GL_CXXALIASWARN (powf);
822 #elif defined GNULIB_POSIXCHECK
824 # if HAVE_RAW_DECL_POWF
825 _GL_WARN_ON_USE (powf, "powf is unportable - "
826 "use gnulib module powf for portability");
833 _GL_FUNCDECL_SYS (rintf, float, (float x));
835 _GL_CXXALIAS_SYS (rintf, float, (float x));
836 _GL_CXXALIASWARN (rintf);
837 #elif defined GNULIB_POSIXCHECK
839 # if HAVE_RAW_DECL_RINTF
840 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
841 "use gnulib module rintf for portability");
847 _GL_FUNCDECL_SYS (rint, double, (double x));
849 _GL_CXXALIAS_SYS (rint, double, (double x));
850 _GL_CXXALIASWARN (rint);
851 #elif defined GNULIB_POSIXCHECK
853 # if HAVE_RAW_DECL_RINT
854 _GL_WARN_ON_USE (rint, "rint is unportable - "
855 "use gnulib module rint for portability");
861 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
863 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
864 _GL_CXXALIASWARN (rintl);
865 #elif defined GNULIB_POSIXCHECK
867 # if HAVE_RAW_DECL_RINTL
868 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
869 "use gnulib module rintl for portability");
875 # if @REPLACE_ROUNDF@
876 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
878 # define roundf rpl_roundf
880 _GL_FUNCDECL_RPL (roundf, float, (float x));
881 _GL_CXXALIAS_RPL (roundf, float, (float x));
883 # if !@HAVE_DECL_ROUNDF@
884 _GL_FUNCDECL_SYS (roundf, float, (float x));
886 _GL_CXXALIAS_SYS (roundf, float, (float x));
888 _GL_CXXALIASWARN (roundf);
889 #elif defined GNULIB_POSIXCHECK
891 # if HAVE_RAW_DECL_ROUNDF
892 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
893 "use gnulib module roundf for portability");
899 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
901 # define round rpl_round
903 _GL_FUNCDECL_RPL (round, double, (double x));
904 _GL_CXXALIAS_RPL (round, double, (double x));
906 # if !@HAVE_DECL_ROUND@
907 _GL_FUNCDECL_SYS (round, double, (double x));
909 _GL_CXXALIAS_SYS (round, double, (double x));
911 _GL_CXXALIASWARN (round);
912 #elif defined GNULIB_POSIXCHECK
914 # if HAVE_RAW_DECL_ROUND
915 _GL_WARN_ON_USE (round, "round is unportable - "
916 "use gnulib module round for portability");
921 # if @REPLACE_ROUNDL@
922 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
924 # define roundl rpl_roundl
926 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
927 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
929 # if !@HAVE_DECL_ROUNDL@
930 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
932 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
934 _GL_CXXALIASWARN (roundl);
935 #elif defined GNULIB_POSIXCHECK
937 # if HAVE_RAW_DECL_ROUNDL
938 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
939 "use gnulib module roundl for portability");
947 _GL_FUNCDECL_SYS (sinf, float, (float x));
949 _GL_CXXALIAS_SYS (sinf, float, (float x));
950 _GL_CXXALIASWARN (sinf);
951 #elif defined GNULIB_POSIXCHECK
953 # if HAVE_RAW_DECL_SINF
954 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
955 "use gnulib module sinf for portability");
960 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
961 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
963 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
964 _GL_CXXALIASWARN (sinl);
965 #elif defined GNULIB_POSIXCHECK
967 # if HAVE_RAW_DECL_SINL
968 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
969 "use gnulib module mathl for portability");
977 _GL_FUNCDECL_SYS (sinhf, float, (float x));
979 _GL_CXXALIAS_SYS (sinhf, float, (float x));
980 _GL_CXXALIASWARN (sinhf);
981 #elif defined GNULIB_POSIXCHECK
983 # if HAVE_RAW_DECL_SINHF
984 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
985 "use gnulib module sinhf for portability");
993 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
995 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
996 _GL_CXXALIASWARN (sqrtf);
997 #elif defined GNULIB_POSIXCHECK
999 # if HAVE_RAW_DECL_SQRTF
1000 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1001 "use gnulib module sqrtf for portability");
1006 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1008 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1010 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1011 _GL_CXXALIASWARN (sqrtl);
1012 #elif defined GNULIB_POSIXCHECK
1014 # if HAVE_RAW_DECL_SQRTL
1015 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1016 "use gnulib module mathl for portability");
1024 _GL_FUNCDECL_SYS (tanf, float, (float x));
1026 _GL_CXXALIAS_SYS (tanf, float, (float x));
1027 _GL_CXXALIASWARN (tanf);
1028 #elif defined GNULIB_POSIXCHECK
1030 # if HAVE_RAW_DECL_TANF
1031 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1032 "use gnulib module tanf for portability");
1037 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1038 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1040 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1041 _GL_CXXALIASWARN (tanl);
1042 #elif defined GNULIB_POSIXCHECK
1044 # if HAVE_RAW_DECL_TANL
1045 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1046 "use gnulib module mathl for portability");
1054 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1056 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1057 _GL_CXXALIASWARN (tanhf);
1058 #elif defined GNULIB_POSIXCHECK
1060 # if HAVE_RAW_DECL_TANHF
1061 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1062 "use gnulib module tanhf for portability");
1068 # if @REPLACE_TRUNCF@
1069 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1070 # define truncf rpl_truncf
1072 _GL_FUNCDECL_RPL (truncf, float, (float x));
1073 _GL_CXXALIAS_RPL (truncf, float, (float x));
1075 # if !@HAVE_DECL_TRUNCF@
1076 _GL_FUNCDECL_SYS (truncf, float, (float x));
1078 _GL_CXXALIAS_SYS (truncf, float, (float x));
1080 _GL_CXXALIASWARN (truncf);
1081 #elif defined GNULIB_POSIXCHECK
1083 # if HAVE_RAW_DECL_TRUNCF
1084 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1085 "use gnulib module truncf for portability");
1090 # if @REPLACE_TRUNC@
1091 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1092 # define trunc rpl_trunc
1094 _GL_FUNCDECL_RPL (trunc, double, (double x));
1095 _GL_CXXALIAS_RPL (trunc, double, (double x));
1097 # if !@HAVE_DECL_TRUNC@
1098 _GL_FUNCDECL_SYS (trunc, double, (double x));
1100 _GL_CXXALIAS_SYS (trunc, double, (double x));
1102 _GL_CXXALIASWARN (trunc);
1103 #elif defined GNULIB_POSIXCHECK
1105 # if HAVE_RAW_DECL_TRUNC
1106 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1107 "use gnulib module trunc for portability");
1112 # if @REPLACE_TRUNCL@
1113 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1115 # define truncl rpl_truncl
1117 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1118 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1120 # if !@HAVE_DECL_TRUNCL@
1121 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1123 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1125 _GL_CXXALIASWARN (truncl);
1126 #elif defined GNULIB_POSIXCHECK
1128 # if HAVE_RAW_DECL_TRUNCL
1129 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1130 "use gnulib module truncl for portability");
1135 /* Definitions of function-like macros come here, after the function
1139 #if @GNULIB_ISFINITE@
1140 # if @REPLACE_ISFINITE@
1141 _GL_EXTERN_C int gl_isfinitef (float x);
1142 _GL_EXTERN_C int gl_isfinited (double x);
1143 _GL_EXTERN_C int gl_isfinitel (long double x);
1145 # define isfinite(x) \
1146 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1147 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1152 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1154 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1157 #elif defined GNULIB_POSIXCHECK
1158 # if defined isfinite
1159 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1161 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1167 # if @REPLACE_ISINF@
1168 _GL_EXTERN_C int gl_isinff (float x);
1169 _GL_EXTERN_C int gl_isinfd (double x);
1170 _GL_EXTERN_C int gl_isinfl (long double x);
1173 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1174 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1179 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1181 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1184 #elif defined GNULIB_POSIXCHECK
1186 _GL_WARN_REAL_FLOATING_DECL (isinf);
1188 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1194 /* Test for NaN for 'float' numbers. */
1196 /* The original <math.h> included above provides a declaration of isnan macro
1197 or (older) isnanf function. */
1199 /* GCC 4.0 and newer provides three built-ins for isnan. */
1201 # define isnanf(x) __builtin_isnanf ((float)(x))
1202 # elif defined isnan
1204 # define isnanf(x) isnan ((float)(x))
1207 /* Test whether X is a NaN. */
1209 # define isnanf rpl_isnanf
1210 _GL_EXTERN_C int isnanf (float x);
1215 /* Test for NaN for 'double' numbers.
1216 This function is a gnulib extension, unlike isnan() which applied only
1217 to 'double' numbers earlier but now is a type-generic macro. */
1219 /* The original <math.h> included above provides a declaration of isnan
1222 /* GCC 4.0 and newer provides three built-ins for isnan. */
1224 # define isnand(x) __builtin_isnan ((double)(x))
1227 # define isnand(x) isnan ((double)(x))
1230 /* Test whether X is a NaN. */
1232 # define isnand rpl_isnand
1233 _GL_EXTERN_C int isnand (double x);
1238 /* Test for NaN for 'long double' numbers. */
1240 /* The original <math.h> included above provides a declaration of isnan
1241 macro or (older) isnanl function. */
1243 /* GCC 4.0 and newer provides three built-ins for isnan. */
1245 # define isnanl(x) __builtin_isnanl ((long double)(x))
1246 # elif defined isnan
1248 # define isnanl(x) isnan ((long double)(x))
1251 /* Test whether X is a NaN. */
1253 # define isnanl rpl_isnanl
1254 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1258 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1260 # if @REPLACE_ISNAN@
1261 /* We can't just use the isnanf macro (e.g.) as exposed by
1262 isnanf.h (e.g.) here, because those may end up being macros
1263 that recursively expand back to isnan. So use the gnulib
1264 replacements for them directly. */
1265 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1266 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1268 _GL_EXTERN_C int rpl_isnanf (float x);
1269 # define gl_isnan_f(x) rpl_isnanf (x)
1271 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1272 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1274 _GL_EXTERN_C int rpl_isnand (double x);
1275 # define gl_isnan_d(x) rpl_isnand (x)
1277 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1278 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1280 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1281 # define gl_isnan_l(x) rpl_isnanl (x)
1285 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1286 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1288 # elif __GNUC__ >= 4
1291 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1292 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1293 __builtin_isnanf ((float)(x)))
1297 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1299 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1302 /* Ensure isnan is a macro. */
1304 # define isnan isnan
1307 #elif defined GNULIB_POSIXCHECK
1309 _GL_WARN_REAL_FLOATING_DECL (isnan);
1311 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1316 #if @GNULIB_SIGNBIT@
1317 # if @REPLACE_SIGNBIT_USING_GCC@
1319 /* GCC 4.0 and newer provides three built-ins for signbit. */
1320 # define signbit(x) \
1321 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1322 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1323 __builtin_signbitf (x))
1325 # if @REPLACE_SIGNBIT@
1327 _GL_EXTERN_C int gl_signbitf (float arg);
1328 _GL_EXTERN_C int gl_signbitd (double arg);
1329 _GL_EXTERN_C int gl_signbitl (long double arg);
1330 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1331 # define _GL_NUM_UINT_WORDS(type) \
1332 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1333 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1334 # define gl_signbitf_OPTIMIZED_MACRO
1335 # define gl_signbitf(arg) \
1336 ({ union { float _value; \
1337 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1339 _m._value = (arg); \
1340 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1343 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1344 # define gl_signbitd_OPTIMIZED_MACRO
1345 # define gl_signbitd(arg) \
1346 ({ union { double _value; \
1347 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1349 _m._value = (arg); \
1350 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1353 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1354 # define gl_signbitl_OPTIMIZED_MACRO
1355 # define gl_signbitl(arg) \
1356 ({ union { long double _value; \
1357 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1359 _m._value = (arg); \
1360 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1364 # define signbit(x) \
1365 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1366 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1371 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1373 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1376 #elif defined GNULIB_POSIXCHECK
1377 # if defined signbit
1378 _GL_WARN_REAL_FLOATING_DECL (signbit);
1380 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1385 #endif /* _@GUARD_PREFIX@_MATH_H */
1386 #endif /* _@GUARD_PREFIX@_MATH_H */