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_VALF (1.0f / 0.0f)
147 # define HUGE_VAL (1.0 / 0.0)
149 # define HUGE_VALL (1.0L / 0.0L)
152 /* HUGE_VALF is a 'float' Infinity. */
154 # if defined _MSC_VER
155 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f. */
156 # define HUGE_VALF (1e25f * 1e25f)
158 # define HUGE_VALF (1.0f / 0.0f)
162 /* HUGE_VAL is a 'double' Infinity. */
164 # if defined _MSC_VER
165 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
166 # define HUGE_VAL (1e250 * 1e250)
168 # define HUGE_VAL (1.0 / 0.0)
172 /* HUGE_VALL is a 'long double' Infinity. */
174 # if defined _MSC_VER
175 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. */
176 # define HUGE_VALL (1e250L * 1e250L)
178 # define HUGE_VALL (1.0L / 0.0L)
185 _GL_FUNCDECL_SYS (acosf, float, (float x));
187 _GL_CXXALIAS_SYS (acosf, float, (float x));
188 _GL_CXXALIASWARN (acosf);
189 #elif defined GNULIB_POSIXCHECK
191 # if HAVE_RAW_DECL_ACOSF
192 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
193 "use gnulib module acosf for portability");
198 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
200 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
202 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
203 _GL_CXXALIASWARN (acosl);
204 #elif defined GNULIB_POSIXCHECK
206 # if HAVE_RAW_DECL_ACOSL
207 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
208 "use gnulib module mathl for portability");
216 _GL_FUNCDECL_SYS (asinf, float, (float x));
218 _GL_CXXALIAS_SYS (asinf, float, (float x));
219 _GL_CXXALIASWARN (asinf);
220 #elif defined GNULIB_POSIXCHECK
222 # if HAVE_RAW_DECL_ASINF
223 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
224 "use gnulib module asinf for portability");
229 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
231 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
233 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
234 _GL_CXXALIASWARN (asinl);
235 #elif defined GNULIB_POSIXCHECK
237 # if HAVE_RAW_DECL_ASINL
238 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
239 "use gnulib module mathl for portability");
247 _GL_FUNCDECL_SYS (atanf, float, (float x));
249 _GL_CXXALIAS_SYS (atanf, float, (float x));
250 _GL_CXXALIASWARN (atanf);
251 #elif defined GNULIB_POSIXCHECK
253 # if HAVE_RAW_DECL_ATANF
254 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
255 "use gnulib module atanf for portability");
260 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
262 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
264 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
265 _GL_CXXALIASWARN (atanl);
266 #elif defined GNULIB_POSIXCHECK
268 # if HAVE_RAW_DECL_ATANL
269 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
270 "use gnulib module mathl for portability");
278 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
280 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
281 _GL_CXXALIASWARN (atan2f);
282 #elif defined GNULIB_POSIXCHECK
284 # if HAVE_RAW_DECL_ATAN2F
285 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
286 "use gnulib module atan2f for portability");
292 # if !@HAVE_DECL_CBRTF@
293 _GL_FUNCDECL_SYS (cbrtf, float, (float x));
295 _GL_CXXALIAS_SYS (cbrtf, float, (float x));
296 _GL_CXXALIASWARN (cbrtf);
297 #elif defined GNULIB_POSIXCHECK
299 # if HAVE_RAW_DECL_CBRTF
300 _GL_WARN_ON_USE (cbrtf, "cbrtf is unportable - "
301 "use gnulib module cbrtf for portability");
307 _GL_FUNCDECL_SYS (cbrt, double, (double x));
309 _GL_CXXALIAS_SYS (cbrt, double, (double x));
310 _GL_CXXALIASWARN (cbrt);
311 #elif defined GNULIB_POSIXCHECK
313 # if HAVE_RAW_DECL_CBRT
314 _GL_WARN_ON_USE (cbrt, "cbrt is unportable - "
315 "use gnulib module cbrt for portability");
320 # if !@HAVE_DECL_CBRTL@
321 _GL_FUNCDECL_SYS (cbrtl, long double, (long double x));
323 _GL_CXXALIAS_SYS (cbrtl, long double, (long double x));
324 _GL_CXXALIASWARN (cbrtl);
325 #elif defined GNULIB_POSIXCHECK
327 # if HAVE_RAW_DECL_CBRTL
328 _GL_WARN_ON_USE (cbrtl, "cbrtl is unportable - "
329 "use gnulib module cbrtl for portability");
336 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
338 # define ceilf rpl_ceilf
340 _GL_FUNCDECL_RPL (ceilf, float, (float x));
341 _GL_CXXALIAS_RPL (ceilf, float, (float x));
343 # if !@HAVE_DECL_CEILF@
345 _GL_FUNCDECL_SYS (ceilf, float, (float x));
347 _GL_CXXALIAS_SYS (ceilf, float, (float x));
349 _GL_CXXALIASWARN (ceilf);
350 #elif defined GNULIB_POSIXCHECK
352 # if HAVE_RAW_DECL_CEILF
353 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
354 "use gnulib module ceilf for portability");
360 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
361 # define ceil rpl_ceil
363 _GL_FUNCDECL_RPL (ceil, double, (double x));
364 _GL_CXXALIAS_RPL (ceil, double, (double x));
366 _GL_CXXALIAS_SYS (ceil, double, (double x));
368 _GL_CXXALIASWARN (ceil);
373 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
375 # define ceill rpl_ceill
377 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
378 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
380 # if !@HAVE_DECL_CEILL@
382 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
384 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
386 _GL_CXXALIASWARN (ceill);
387 #elif defined GNULIB_POSIXCHECK
389 # if HAVE_RAW_DECL_CEILL
390 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
391 "use gnulib module ceill for portability");
396 #if @GNULIB_COPYSIGNF@
397 # if !@HAVE_COPYSIGNF@
398 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
400 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
401 _GL_CXXALIASWARN (copysignf);
402 #elif defined GNULIB_POSIXCHECK
404 # if HAVE_RAW_DECL_COPYSIGNF
405 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
406 "use gnulib module copysignf for portability");
410 #if @GNULIB_COPYSIGN@
411 # if !@HAVE_COPYSIGN@
412 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
414 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
415 _GL_CXXALIASWARN (copysign);
416 #elif defined GNULIB_POSIXCHECK
418 # if HAVE_RAW_DECL_COPYSIGN
419 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
420 "use gnulib module copysign for portability");
424 #if @GNULIB_COPYSIGNL@
425 # if !@HAVE_COPYSIGNL@
426 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
428 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
429 _GL_CXXALIASWARN (copysignl);
430 #elif defined GNULIB_POSIXCHECK
432 # if HAVE_RAW_DECL_COPYSIGNL
433 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
434 "use gnulib module copysignl for portability");
442 _GL_FUNCDECL_SYS (cosf, float, (float x));
444 _GL_CXXALIAS_SYS (cosf, float, (float x));
445 _GL_CXXALIASWARN (cosf);
446 #elif defined GNULIB_POSIXCHECK
448 # if HAVE_RAW_DECL_COSF
449 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
450 "use gnulib module cosf for portability");
455 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
457 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
459 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
460 _GL_CXXALIASWARN (cosl);
461 #elif defined GNULIB_POSIXCHECK
463 # if HAVE_RAW_DECL_COSL
464 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
465 "use gnulib module mathl for portability");
473 _GL_FUNCDECL_SYS (coshf, float, (float x));
475 _GL_CXXALIAS_SYS (coshf, float, (float x));
476 _GL_CXXALIASWARN (coshf);
477 #elif defined GNULIB_POSIXCHECK
479 # if HAVE_RAW_DECL_COSHF
480 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
481 "use gnulib module coshf for portability");
489 _GL_FUNCDECL_SYS (expf, float, (float x));
491 _GL_CXXALIAS_SYS (expf, float, (float x));
492 _GL_CXXALIASWARN (expf);
493 #elif defined GNULIB_POSIXCHECK
495 # if HAVE_RAW_DECL_EXPF
496 _GL_WARN_ON_USE (expf, "expf is unportable - "
497 "use gnulib module expf for portability");
502 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
504 _GL_FUNCDECL_SYS (expl, long double, (long double x));
506 _GL_CXXALIAS_SYS (expl, long double, (long double x));
507 _GL_CXXALIASWARN (expl);
508 #elif defined GNULIB_POSIXCHECK
510 # if HAVE_RAW_DECL_EXPL
511 _GL_WARN_ON_USE (expl, "expl is unportable - "
512 "use gnulib module mathl for portability");
520 _GL_FUNCDECL_SYS (fabsf, float, (float x));
522 _GL_CXXALIAS_SYS (fabsf, float, (float x));
523 _GL_CXXALIASWARN (fabsf);
524 #elif defined GNULIB_POSIXCHECK
526 # if HAVE_RAW_DECL_FABSF
527 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
528 "use gnulib module fabsf for portability");
534 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
536 # define fabsl rpl_fabsl
538 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
539 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
543 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
545 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
547 _GL_CXXALIASWARN (fabsl);
548 #elif defined GNULIB_POSIXCHECK
550 # if HAVE_RAW_DECL_FABSL
551 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
552 "use gnulib module fabsl for portability");
558 # if @REPLACE_FLOORF@
559 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
561 # define floorf rpl_floorf
563 _GL_FUNCDECL_RPL (floorf, float, (float x));
564 _GL_CXXALIAS_RPL (floorf, float, (float x));
566 # if !@HAVE_DECL_FLOORF@
568 _GL_FUNCDECL_SYS (floorf, float, (float x));
570 _GL_CXXALIAS_SYS (floorf, float, (float x));
572 _GL_CXXALIASWARN (floorf);
573 #elif defined GNULIB_POSIXCHECK
575 # if HAVE_RAW_DECL_FLOORF
576 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
577 "use gnulib module floorf for portability");
583 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
584 # define floor rpl_floor
586 _GL_FUNCDECL_RPL (floor, double, (double x));
587 _GL_CXXALIAS_RPL (floor, double, (double x));
589 _GL_CXXALIAS_SYS (floor, double, (double x));
591 _GL_CXXALIASWARN (floor);
595 # if @REPLACE_FLOORL@
596 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
598 # define floorl rpl_floorl
600 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
601 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
603 # if !@HAVE_DECL_FLOORL@
605 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
607 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
609 _GL_CXXALIASWARN (floorl);
610 #elif defined GNULIB_POSIXCHECK
612 # if HAVE_RAW_DECL_FLOORL
613 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
614 "use gnulib module floorl for portability");
621 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
623 # define fmaf rpl_fmaf
625 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
626 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
629 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
631 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
633 _GL_CXXALIASWARN (fmaf);
634 #elif defined GNULIB_POSIXCHECK
636 # if HAVE_RAW_DECL_FMAF
637 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
638 "use gnulib module fmaf for portability");
644 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
648 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
649 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
652 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
654 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
656 _GL_CXXALIASWARN (fma);
657 #elif defined GNULIB_POSIXCHECK
659 # if HAVE_RAW_DECL_FMA
660 _GL_WARN_ON_USE (fma, "fma is unportable - "
661 "use gnulib module fma for portability");
667 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
669 # define fmal rpl_fmal
671 _GL_FUNCDECL_RPL (fmal, long double,
672 (long double x, long double y, long double z));
673 _GL_CXXALIAS_RPL (fmal, long double,
674 (long double x, long double y, long double z));
677 _GL_FUNCDECL_SYS (fmal, long double,
678 (long double x, long double y, long double z));
680 _GL_CXXALIAS_SYS (fmal, long double,
681 (long double x, long double y, long double z));
683 _GL_CXXALIASWARN (fmal);
684 #elif defined GNULIB_POSIXCHECK
686 # if HAVE_RAW_DECL_FMAL
687 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
688 "use gnulib module fmal for portability");
695 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
697 # define fmodf rpl_fmodf
699 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
700 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
704 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
706 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
708 _GL_CXXALIASWARN (fmodf);
709 #elif defined GNULIB_POSIXCHECK
711 # if HAVE_RAW_DECL_FMODF
712 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
713 "use gnulib module fmodf for portability");
719 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
721 # define fmod rpl_fmod
723 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
724 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
726 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
728 _GL_CXXALIASWARN (fmod);
729 #elif defined GNULIB_POSIXCHECK
731 # if HAVE_RAW_DECL_FMOD
732 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
733 "use gnulib module fmod for portability");
739 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
741 # define fmodl rpl_fmodl
743 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
744 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
748 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
750 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
752 _GL_CXXALIASWARN (fmodl);
753 #elif defined GNULIB_POSIXCHECK
755 # if HAVE_RAW_DECL_FMODL
756 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
757 "use gnulib module fmodl for portability");
765 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
766 If x is zero: mantissa = x, exp = 0.
767 If x is infinite or NaN: mantissa = x, exp unspecified.
768 Store exp in *EXPPTR and return mantissa. */
770 # if @REPLACE_FREXPF@
771 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
773 # define frexpf rpl_frexpf
775 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
776 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
780 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
782 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
784 _GL_CXXALIASWARN (frexpf);
785 #elif defined GNULIB_POSIXCHECK
787 # if HAVE_RAW_DECL_FREXPF
788 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
789 "use gnulib module frexpf for portability");
796 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
797 If x is zero: mantissa = x, exp = 0.
798 If x is infinite or NaN: mantissa = x, exp unspecified.
799 Store exp in *EXPPTR and return mantissa. */
802 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
803 # define frexp rpl_frexp
805 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
806 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
808 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
810 _GL_CXXALIASWARN (frexp);
811 #elif defined GNULIB_POSIXCHECK
813 /* Assume frexp is always declared. */
814 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
815 "use gnulib module frexp for portability");
821 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
822 If x is zero: mantissa = x, exp = 0.
823 If x is infinite or NaN: mantissa = x, exp unspecified.
824 Store exp in *EXPPTR and return mantissa. */
825 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
826 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
828 # define frexpl rpl_frexpl
830 _GL_FUNCDECL_RPL (frexpl, long double,
831 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
832 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
834 # if !@HAVE_DECL_FREXPL@
835 _GL_FUNCDECL_SYS (frexpl, long double,
836 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
839 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
842 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
843 _GL_CXXALIASWARN (frexpl);
845 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
847 # if HAVE_RAW_DECL_FREXPL
848 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
849 "use gnulib module frexpl for portability");
854 /* Return sqrt(x^2+y^2). */
856 # if @REPLACE_HYPOTF@
857 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
859 # define hypotf rpl_hypotf
861 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
862 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
865 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
867 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
869 _GL_CXXALIASWARN (hypotf);
870 #elif defined GNULIB_POSIXCHECK
872 # if HAVE_RAW_DECL_HYPOTF
873 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
874 "use gnulib module hypotf for portability");
878 /* Return sqrt(x^2+y^2). */
881 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
883 # define hypot rpl_hypot
885 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
886 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
888 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
890 _GL_CXXALIASWARN (hypot);
891 #elif defined GNULIB_POSIXCHECK
893 # if HAVE_RAW_DECL_HYPOT
894 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
895 "use gnulib module hypot for portability");
899 /* Return sqrt(x^2+y^2). */
901 # if @REPLACE_HYPOTL@
902 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
904 # define hypotl rpl_hypotl
906 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
907 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
910 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
912 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
914 _GL_CXXALIASWARN (hypotl);
915 #elif defined GNULIB_POSIXCHECK
917 # if HAVE_RAW_DECL_HYPOTL
918 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
919 "use gnulib module hypotl for portability");
924 /* Return x * 2^exp. */
928 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
930 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
931 _GL_CXXALIASWARN (ldexpf);
932 #elif defined GNULIB_POSIXCHECK
934 # if HAVE_RAW_DECL_LDEXPF
935 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
936 "use gnulib module ldexpf for portability");
940 /* Return x * 2^exp. */
941 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
942 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
944 # define ldexpl rpl_ldexpl
946 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
947 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
949 # if !@HAVE_DECL_LDEXPL@
950 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
953 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
957 _GL_CXXALIASWARN (ldexpl);
959 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
961 # if HAVE_RAW_DECL_LDEXPL
962 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
963 "use gnulib module ldexpl for portability");
969 # if !@HAVE_DECL_LOGB@
970 _GL_EXTERN_C double logb (double x);
972 #elif defined GNULIB_POSIXCHECK
974 # if HAVE_RAW_DECL_LOGB
975 _GL_WARN_ON_USE (logb, "logb is unportable - "
976 "use gnulib module logb for portability");
984 _GL_FUNCDECL_SYS (logf, float, (float x));
986 _GL_CXXALIAS_SYS (logf, float, (float x));
987 _GL_CXXALIASWARN (logf);
988 #elif defined GNULIB_POSIXCHECK
990 # if HAVE_RAW_DECL_LOGF
991 _GL_WARN_ON_USE (logf, "logf is unportable - "
992 "use gnulib module logf for portability");
997 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
999 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1001 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1002 _GL_CXXALIASWARN (logl);
1003 #elif defined GNULIB_POSIXCHECK
1005 # if HAVE_RAW_DECL_LOGL
1006 _GL_WARN_ON_USE (logl, "logl is unportable - "
1007 "use gnulib module mathl for portability");
1015 _GL_FUNCDECL_SYS (log10f, float, (float x));
1017 _GL_CXXALIAS_SYS (log10f, float, (float x));
1018 _GL_CXXALIASWARN (log10f);
1019 #elif defined GNULIB_POSIXCHECK
1021 # if HAVE_RAW_DECL_LOG10F
1022 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1023 "use gnulib module log10f for portability");
1028 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1030 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1032 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1033 _GL_CXXALIASWARN (log10l);
1034 #elif defined GNULIB_POSIXCHECK
1036 # if HAVE_RAW_DECL_LOG10L
1037 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1038 "use gnulib module log10l for portability");
1044 # if @REPLACE_MODFF@
1045 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1047 # define modff rpl_modff
1049 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1050 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1054 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1056 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1058 _GL_CXXALIASWARN (modff);
1059 #elif defined GNULIB_POSIXCHECK
1061 # if HAVE_RAW_DECL_MODFF
1062 _GL_WARN_ON_USE (modff, "modff is unportable - "
1063 "use gnulib module modff for portability");
1069 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1071 # define modf rpl_modf
1073 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1074 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1076 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1078 _GL_CXXALIASWARN (modf);
1079 #elif defined GNULIB_POSIXCHECK
1081 # if HAVE_RAW_DECL_MODF
1082 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1083 "use gnulib module modf for portability");
1088 # if @REPLACE_MODFL@
1089 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1091 # define modfl rpl_modfl
1093 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1094 _GL_ARG_NONNULL ((2)));
1095 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1099 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1100 _GL_ARG_NONNULL ((2)));
1102 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1104 _GL_CXXALIASWARN (modfl);
1105 #elif defined GNULIB_POSIXCHECK
1107 # if HAVE_RAW_DECL_MODFL
1108 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1109 "use gnulib module modfl for portability");
1117 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1119 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1120 _GL_CXXALIASWARN (powf);
1121 #elif defined GNULIB_POSIXCHECK
1123 # if HAVE_RAW_DECL_POWF
1124 _GL_WARN_ON_USE (powf, "powf is unportable - "
1125 "use gnulib module powf for portability");
1130 #if @GNULIB_REMAINDERF@
1131 # if @REPLACE_REMAINDERF@
1132 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1134 # define remainderf rpl_remainderf
1136 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1137 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1139 # if !@HAVE_REMAINDERF@
1140 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1142 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1144 _GL_CXXALIASWARN (remainderf);
1145 #elif defined GNULIB_POSIXCHECK
1147 # if HAVE_RAW_DECL_REMAINDERF
1148 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1149 "use gnulib module remainderf for portability");
1153 #if @GNULIB_REMAINDER@
1154 # if @REPLACE_REMAINDER@
1155 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1157 # define remainder rpl_remainder
1159 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1160 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1162 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1163 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1165 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1167 _GL_CXXALIASWARN (remainder);
1168 #elif defined GNULIB_POSIXCHECK
1170 # if HAVE_RAW_DECL_REMAINDER
1171 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1172 "use gnulib module remainder for portability");
1176 #if @GNULIB_REMAINDERL@
1177 # if @REPLACE_REMAINDERL@
1178 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1180 # define remainderl rpl_remainderl
1182 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1183 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1185 # if !@HAVE_REMAINDERL@
1186 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1188 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1190 _GL_CXXALIASWARN (remainderl);
1191 #elif defined GNULIB_POSIXCHECK
1193 # if HAVE_RAW_DECL_REMAINDERL
1194 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1195 "use gnulib module remainderl for portability");
1202 _GL_FUNCDECL_SYS (rintf, float, (float x));
1204 _GL_CXXALIAS_SYS (rintf, float, (float x));
1205 _GL_CXXALIASWARN (rintf);
1206 #elif defined GNULIB_POSIXCHECK
1208 # if HAVE_RAW_DECL_RINTF
1209 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1210 "use gnulib module rintf for portability");
1216 _GL_FUNCDECL_SYS (rint, double, (double x));
1218 _GL_CXXALIAS_SYS (rint, double, (double x));
1219 _GL_CXXALIASWARN (rint);
1220 #elif defined GNULIB_POSIXCHECK
1222 # if HAVE_RAW_DECL_RINT
1223 _GL_WARN_ON_USE (rint, "rint is unportable - "
1224 "use gnulib module rint for portability");
1230 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1232 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1233 _GL_CXXALIASWARN (rintl);
1234 #elif defined GNULIB_POSIXCHECK
1236 # if HAVE_RAW_DECL_RINTL
1237 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1238 "use gnulib module rintl for portability");
1244 # if @REPLACE_ROUNDF@
1245 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1247 # define roundf rpl_roundf
1249 _GL_FUNCDECL_RPL (roundf, float, (float x));
1250 _GL_CXXALIAS_RPL (roundf, float, (float x));
1252 # if !@HAVE_DECL_ROUNDF@
1253 _GL_FUNCDECL_SYS (roundf, float, (float x));
1255 _GL_CXXALIAS_SYS (roundf, float, (float x));
1257 _GL_CXXALIASWARN (roundf);
1258 #elif defined GNULIB_POSIXCHECK
1260 # if HAVE_RAW_DECL_ROUNDF
1261 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1262 "use gnulib module roundf for portability");
1267 # if @REPLACE_ROUND@
1268 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1270 # define round rpl_round
1272 _GL_FUNCDECL_RPL (round, double, (double x));
1273 _GL_CXXALIAS_RPL (round, double, (double x));
1275 # if !@HAVE_DECL_ROUND@
1276 _GL_FUNCDECL_SYS (round, double, (double x));
1278 _GL_CXXALIAS_SYS (round, double, (double x));
1280 _GL_CXXALIASWARN (round);
1281 #elif defined GNULIB_POSIXCHECK
1283 # if HAVE_RAW_DECL_ROUND
1284 _GL_WARN_ON_USE (round, "round is unportable - "
1285 "use gnulib module round for portability");
1290 # if @REPLACE_ROUNDL@
1291 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1293 # define roundl rpl_roundl
1295 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1296 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1298 # if !@HAVE_DECL_ROUNDL@
1299 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1301 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1303 _GL_CXXALIASWARN (roundl);
1304 #elif defined GNULIB_POSIXCHECK
1306 # if HAVE_RAW_DECL_ROUNDL
1307 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1308 "use gnulib module roundl for portability");
1316 _GL_FUNCDECL_SYS (sinf, float, (float x));
1318 _GL_CXXALIAS_SYS (sinf, float, (float x));
1319 _GL_CXXALIASWARN (sinf);
1320 #elif defined GNULIB_POSIXCHECK
1322 # if HAVE_RAW_DECL_SINF
1323 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1324 "use gnulib module sinf for portability");
1329 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1331 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1333 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1334 _GL_CXXALIASWARN (sinl);
1335 #elif defined GNULIB_POSIXCHECK
1337 # if HAVE_RAW_DECL_SINL
1338 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1339 "use gnulib module mathl for portability");
1347 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1349 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1350 _GL_CXXALIASWARN (sinhf);
1351 #elif defined GNULIB_POSIXCHECK
1353 # if HAVE_RAW_DECL_SINHF
1354 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1355 "use gnulib module sinhf for portability");
1363 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1365 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1366 _GL_CXXALIASWARN (sqrtf);
1367 #elif defined GNULIB_POSIXCHECK
1369 # if HAVE_RAW_DECL_SQRTF
1370 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1371 "use gnulib module sqrtf for portability");
1376 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1378 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1380 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1381 _GL_CXXALIASWARN (sqrtl);
1382 #elif defined GNULIB_POSIXCHECK
1384 # if HAVE_RAW_DECL_SQRTL
1385 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1386 "use gnulib module mathl for portability");
1394 _GL_FUNCDECL_SYS (tanf, float, (float x));
1396 _GL_CXXALIAS_SYS (tanf, float, (float x));
1397 _GL_CXXALIASWARN (tanf);
1398 #elif defined GNULIB_POSIXCHECK
1400 # if HAVE_RAW_DECL_TANF
1401 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1402 "use gnulib module tanf for portability");
1407 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1409 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1411 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1412 _GL_CXXALIASWARN (tanl);
1413 #elif defined GNULIB_POSIXCHECK
1415 # if HAVE_RAW_DECL_TANL
1416 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1417 "use gnulib module mathl for portability");
1425 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1427 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1428 _GL_CXXALIASWARN (tanhf);
1429 #elif defined GNULIB_POSIXCHECK
1431 # if HAVE_RAW_DECL_TANHF
1432 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1433 "use gnulib module tanhf for portability");
1439 # if @REPLACE_TRUNCF@
1440 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1441 # define truncf rpl_truncf
1443 _GL_FUNCDECL_RPL (truncf, float, (float x));
1444 _GL_CXXALIAS_RPL (truncf, float, (float x));
1446 # if !@HAVE_DECL_TRUNCF@
1447 _GL_FUNCDECL_SYS (truncf, float, (float x));
1449 _GL_CXXALIAS_SYS (truncf, float, (float x));
1451 _GL_CXXALIASWARN (truncf);
1452 #elif defined GNULIB_POSIXCHECK
1454 # if HAVE_RAW_DECL_TRUNCF
1455 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1456 "use gnulib module truncf for portability");
1461 # if @REPLACE_TRUNC@
1462 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1463 # define trunc rpl_trunc
1465 _GL_FUNCDECL_RPL (trunc, double, (double x));
1466 _GL_CXXALIAS_RPL (trunc, double, (double x));
1468 # if !@HAVE_DECL_TRUNC@
1469 _GL_FUNCDECL_SYS (trunc, double, (double x));
1471 _GL_CXXALIAS_SYS (trunc, double, (double x));
1473 _GL_CXXALIASWARN (trunc);
1474 #elif defined GNULIB_POSIXCHECK
1476 # if HAVE_RAW_DECL_TRUNC
1477 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1478 "use gnulib module trunc for portability");
1483 # if @REPLACE_TRUNCL@
1484 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1486 # define truncl rpl_truncl
1488 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1489 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1491 # if !@HAVE_DECL_TRUNCL@
1492 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1494 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1496 _GL_CXXALIASWARN (truncl);
1497 #elif defined GNULIB_POSIXCHECK
1499 # if HAVE_RAW_DECL_TRUNCL
1500 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1501 "use gnulib module truncl for portability");
1506 /* Definitions of function-like macros come here, after the function
1510 #if @GNULIB_ISFINITE@
1511 # if @REPLACE_ISFINITE@
1512 _GL_EXTERN_C int gl_isfinitef (float x);
1513 _GL_EXTERN_C int gl_isfinited (double x);
1514 _GL_EXTERN_C int gl_isfinitel (long double x);
1516 # define isfinite(x) \
1517 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1518 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1523 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1525 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1528 #elif defined GNULIB_POSIXCHECK
1529 # if defined isfinite
1530 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1532 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1538 # if @REPLACE_ISINF@
1539 _GL_EXTERN_C int gl_isinff (float x);
1540 _GL_EXTERN_C int gl_isinfd (double x);
1541 _GL_EXTERN_C int gl_isinfl (long double x);
1544 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1545 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1550 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1552 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1555 #elif defined GNULIB_POSIXCHECK
1557 _GL_WARN_REAL_FLOATING_DECL (isinf);
1559 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1565 /* Test for NaN for 'float' numbers. */
1567 /* The original <math.h> included above provides a declaration of isnan macro
1568 or (older) isnanf function. */
1570 /* GCC 4.0 and newer provides three built-ins for isnan. */
1572 # define isnanf(x) __builtin_isnanf ((float)(x))
1573 # elif defined isnan
1575 # define isnanf(x) isnan ((float)(x))
1578 /* Test whether X is a NaN. */
1580 # define isnanf rpl_isnanf
1581 _GL_EXTERN_C int isnanf (float x);
1586 /* Test for NaN for 'double' numbers.
1587 This function is a gnulib extension, unlike isnan() which applied only
1588 to 'double' numbers earlier but now is a type-generic macro. */
1590 /* The original <math.h> included above provides a declaration of isnan
1593 /* GCC 4.0 and newer provides three built-ins for isnan. */
1595 # define isnand(x) __builtin_isnan ((double)(x))
1598 # define isnand(x) isnan ((double)(x))
1601 /* Test whether X is a NaN. */
1603 # define isnand rpl_isnand
1604 _GL_EXTERN_C int isnand (double x);
1609 /* Test for NaN for 'long double' numbers. */
1611 /* The original <math.h> included above provides a declaration of isnan
1612 macro or (older) isnanl function. */
1614 /* GCC 4.0 and newer provides three built-ins for isnan. */
1616 # define isnanl(x) __builtin_isnanl ((long double)(x))
1617 # elif defined isnan
1619 # define isnanl(x) isnan ((long double)(x))
1622 /* Test whether X is a NaN. */
1624 # define isnanl rpl_isnanl
1625 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1629 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1631 # if @REPLACE_ISNAN@
1632 /* We can't just use the isnanf macro (e.g.) as exposed by
1633 isnanf.h (e.g.) here, because those may end up being macros
1634 that recursively expand back to isnan. So use the gnulib
1635 replacements for them directly. */
1636 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1637 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1639 _GL_EXTERN_C int rpl_isnanf (float x);
1640 # define gl_isnan_f(x) rpl_isnanf (x)
1642 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1643 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1645 _GL_EXTERN_C int rpl_isnand (double x);
1646 # define gl_isnan_d(x) rpl_isnand (x)
1648 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1649 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1651 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1652 # define gl_isnan_l(x) rpl_isnanl (x)
1656 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1657 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1659 # elif __GNUC__ >= 4
1662 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1663 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1664 __builtin_isnanf ((float)(x)))
1668 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1670 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1673 /* Ensure isnan is a macro. */
1675 # define isnan isnan
1678 #elif defined GNULIB_POSIXCHECK
1680 _GL_WARN_REAL_FLOATING_DECL (isnan);
1682 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1687 #if @GNULIB_SIGNBIT@
1688 # if @REPLACE_SIGNBIT_USING_GCC@
1690 /* GCC 4.0 and newer provides three built-ins for signbit. */
1691 # define signbit(x) \
1692 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1693 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1694 __builtin_signbitf (x))
1696 # if @REPLACE_SIGNBIT@
1698 _GL_EXTERN_C int gl_signbitf (float arg);
1699 _GL_EXTERN_C int gl_signbitd (double arg);
1700 _GL_EXTERN_C int gl_signbitl (long double arg);
1701 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1702 # define _GL_NUM_UINT_WORDS(type) \
1703 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1704 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1705 # define gl_signbitf_OPTIMIZED_MACRO
1706 # define gl_signbitf(arg) \
1707 ({ union { float _value; \
1708 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1710 _m._value = (arg); \
1711 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1714 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1715 # define gl_signbitd_OPTIMIZED_MACRO
1716 # define gl_signbitd(arg) \
1717 ({ union { double _value; \
1718 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1720 _m._value = (arg); \
1721 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1724 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1725 # define gl_signbitl_OPTIMIZED_MACRO
1726 # define gl_signbitl(arg) \
1727 ({ union { long double _value; \
1728 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1730 _m._value = (arg); \
1731 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1735 # define signbit(x) \
1736 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1737 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1742 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1744 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1747 #elif defined GNULIB_POSIXCHECK
1748 # if defined signbit
1749 _GL_WARN_REAL_FLOATING_DECL (signbit);
1751 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1756 #endif /* _@GUARD_PREFIX@_MATH_H */
1757 #endif /* _@GUARD_PREFIX@_MATH_H */