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 acosl 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 asinl 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 atanl 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");
293 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
295 # define cbrtf rpl_cbrtf
297 _GL_FUNCDECL_RPL (cbrtf, float, (float x));
298 _GL_CXXALIAS_RPL (cbrtf, float, (float x));
300 # if !@HAVE_DECL_CBRTF@
301 _GL_FUNCDECL_SYS (cbrtf, float, (float x));
303 _GL_CXXALIAS_SYS (cbrtf, float, (float x));
305 _GL_CXXALIASWARN (cbrtf);
306 #elif defined GNULIB_POSIXCHECK
308 # if HAVE_RAW_DECL_CBRTF
309 _GL_WARN_ON_USE (cbrtf, "cbrtf is unportable - "
310 "use gnulib module cbrtf for portability");
316 _GL_FUNCDECL_SYS (cbrt, double, (double x));
318 _GL_CXXALIAS_SYS (cbrt, double, (double x));
319 _GL_CXXALIASWARN (cbrt);
320 #elif defined GNULIB_POSIXCHECK
322 # if HAVE_RAW_DECL_CBRT
323 _GL_WARN_ON_USE (cbrt, "cbrt is unportable - "
324 "use gnulib module cbrt for portability");
330 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
332 # define cbrtl rpl_cbrtl
334 _GL_FUNCDECL_RPL (cbrtl, long double, (long double x));
335 _GL_CXXALIAS_RPL (cbrtl, long double, (long double x));
337 # if !@HAVE_DECL_CBRTL@
338 _GL_FUNCDECL_SYS (cbrtl, long double, (long double x));
340 _GL_CXXALIAS_SYS (cbrtl, long double, (long double x));
342 _GL_CXXALIASWARN (cbrtl);
343 #elif defined GNULIB_POSIXCHECK
345 # if HAVE_RAW_DECL_CBRTL
346 _GL_WARN_ON_USE (cbrtl, "cbrtl is unportable - "
347 "use gnulib module cbrtl for portability");
354 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
356 # define ceilf rpl_ceilf
358 _GL_FUNCDECL_RPL (ceilf, float, (float x));
359 _GL_CXXALIAS_RPL (ceilf, float, (float x));
361 # if !@HAVE_DECL_CEILF@
363 _GL_FUNCDECL_SYS (ceilf, float, (float x));
365 _GL_CXXALIAS_SYS (ceilf, float, (float x));
367 _GL_CXXALIASWARN (ceilf);
368 #elif defined GNULIB_POSIXCHECK
370 # if HAVE_RAW_DECL_CEILF
371 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
372 "use gnulib module ceilf for portability");
378 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
379 # define ceil rpl_ceil
381 _GL_FUNCDECL_RPL (ceil, double, (double x));
382 _GL_CXXALIAS_RPL (ceil, double, (double x));
384 _GL_CXXALIAS_SYS (ceil, double, (double x));
386 _GL_CXXALIASWARN (ceil);
391 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
393 # define ceill rpl_ceill
395 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
396 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
398 # if !@HAVE_DECL_CEILL@
400 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
402 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
404 _GL_CXXALIASWARN (ceill);
405 #elif defined GNULIB_POSIXCHECK
407 # if HAVE_RAW_DECL_CEILL
408 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
409 "use gnulib module ceill for portability");
414 #if @GNULIB_COPYSIGNF@
415 # if !@HAVE_COPYSIGNF@
416 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
418 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
419 _GL_CXXALIASWARN (copysignf);
420 #elif defined GNULIB_POSIXCHECK
422 # if HAVE_RAW_DECL_COPYSIGNF
423 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
424 "use gnulib module copysignf for portability");
428 #if @GNULIB_COPYSIGN@
429 # if !@HAVE_COPYSIGN@
430 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
432 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
433 _GL_CXXALIASWARN (copysign);
434 #elif defined GNULIB_POSIXCHECK
436 # if HAVE_RAW_DECL_COPYSIGN
437 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
438 "use gnulib module copysign for portability");
442 #if @GNULIB_COPYSIGNL@
443 # if !@HAVE_COPYSIGNL@
444 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
446 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
447 _GL_CXXALIASWARN (copysignl);
448 #elif defined GNULIB_POSIXCHECK
450 # if HAVE_RAW_DECL_COPYSIGNL
451 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
452 "use gnulib module copysignl for portability");
460 _GL_FUNCDECL_SYS (cosf, float, (float x));
462 _GL_CXXALIAS_SYS (cosf, float, (float x));
463 _GL_CXXALIASWARN (cosf);
464 #elif defined GNULIB_POSIXCHECK
466 # if HAVE_RAW_DECL_COSF
467 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
468 "use gnulib module cosf for portability");
473 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
475 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
477 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
478 _GL_CXXALIASWARN (cosl);
479 #elif defined GNULIB_POSIXCHECK
481 # if HAVE_RAW_DECL_COSL
482 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
483 "use gnulib module cosl for portability");
491 _GL_FUNCDECL_SYS (coshf, float, (float x));
493 _GL_CXXALIAS_SYS (coshf, float, (float x));
494 _GL_CXXALIASWARN (coshf);
495 #elif defined GNULIB_POSIXCHECK
497 # if HAVE_RAW_DECL_COSHF
498 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
499 "use gnulib module coshf for portability");
507 _GL_FUNCDECL_SYS (expf, float, (float x));
509 _GL_CXXALIAS_SYS (expf, float, (float x));
510 _GL_CXXALIASWARN (expf);
511 #elif defined GNULIB_POSIXCHECK
513 # if HAVE_RAW_DECL_EXPF
514 _GL_WARN_ON_USE (expf, "expf is unportable - "
515 "use gnulib module expf for portability");
520 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
522 _GL_FUNCDECL_SYS (expl, long double, (long double x));
524 _GL_CXXALIAS_SYS (expl, long double, (long double x));
525 _GL_CXXALIASWARN (expl);
526 #elif defined GNULIB_POSIXCHECK
528 # if HAVE_RAW_DECL_EXPL
529 _GL_WARN_ON_USE (expl, "expl is unportable - "
530 "use gnulib module expl for portability");
537 _GL_FUNCDECL_SYS (expm1, double, (double x));
539 _GL_CXXALIAS_SYS (expm1, double, (double x));
540 _GL_CXXALIASWARN (expm1);
541 #elif defined GNULIB_POSIXCHECK
543 # if HAVE_RAW_DECL_EXPM1
544 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
545 "use gnulib module expm1 for portability");
553 _GL_FUNCDECL_SYS (fabsf, float, (float x));
555 _GL_CXXALIAS_SYS (fabsf, float, (float x));
556 _GL_CXXALIASWARN (fabsf);
557 #elif defined GNULIB_POSIXCHECK
559 # if HAVE_RAW_DECL_FABSF
560 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
561 "use gnulib module fabsf for portability");
567 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
569 # define fabsl rpl_fabsl
571 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
572 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
576 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
578 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
580 _GL_CXXALIASWARN (fabsl);
581 #elif defined GNULIB_POSIXCHECK
583 # if HAVE_RAW_DECL_FABSL
584 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
585 "use gnulib module fabsl for portability");
591 # if @REPLACE_FLOORF@
592 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
594 # define floorf rpl_floorf
596 _GL_FUNCDECL_RPL (floorf, float, (float x));
597 _GL_CXXALIAS_RPL (floorf, float, (float x));
599 # if !@HAVE_DECL_FLOORF@
601 _GL_FUNCDECL_SYS (floorf, float, (float x));
603 _GL_CXXALIAS_SYS (floorf, float, (float x));
605 _GL_CXXALIASWARN (floorf);
606 #elif defined GNULIB_POSIXCHECK
608 # if HAVE_RAW_DECL_FLOORF
609 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
610 "use gnulib module floorf for portability");
616 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
617 # define floor rpl_floor
619 _GL_FUNCDECL_RPL (floor, double, (double x));
620 _GL_CXXALIAS_RPL (floor, double, (double x));
622 _GL_CXXALIAS_SYS (floor, double, (double x));
624 _GL_CXXALIASWARN (floor);
628 # if @REPLACE_FLOORL@
629 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
631 # define floorl rpl_floorl
633 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
634 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
636 # if !@HAVE_DECL_FLOORL@
638 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
640 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
642 _GL_CXXALIASWARN (floorl);
643 #elif defined GNULIB_POSIXCHECK
645 # if HAVE_RAW_DECL_FLOORL
646 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
647 "use gnulib module floorl for portability");
654 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
656 # define fmaf rpl_fmaf
658 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
659 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
662 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
664 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
666 _GL_CXXALIASWARN (fmaf);
667 #elif defined GNULIB_POSIXCHECK
669 # if HAVE_RAW_DECL_FMAF
670 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
671 "use gnulib module fmaf for portability");
677 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
681 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
682 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
685 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
687 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
689 _GL_CXXALIASWARN (fma);
690 #elif defined GNULIB_POSIXCHECK
692 # if HAVE_RAW_DECL_FMA
693 _GL_WARN_ON_USE (fma, "fma is unportable - "
694 "use gnulib module fma for portability");
700 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
702 # define fmal rpl_fmal
704 _GL_FUNCDECL_RPL (fmal, long double,
705 (long double x, long double y, long double z));
706 _GL_CXXALIAS_RPL (fmal, long double,
707 (long double x, long double y, long double z));
710 _GL_FUNCDECL_SYS (fmal, long double,
711 (long double x, long double y, long double z));
713 _GL_CXXALIAS_SYS (fmal, long double,
714 (long double x, long double y, long double z));
716 _GL_CXXALIASWARN (fmal);
717 #elif defined GNULIB_POSIXCHECK
719 # if HAVE_RAW_DECL_FMAL
720 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
721 "use gnulib module fmal for portability");
728 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
730 # define fmodf rpl_fmodf
732 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
733 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
737 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
739 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
741 _GL_CXXALIASWARN (fmodf);
742 #elif defined GNULIB_POSIXCHECK
744 # if HAVE_RAW_DECL_FMODF
745 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
746 "use gnulib module fmodf for portability");
752 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
754 # define fmod rpl_fmod
756 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
757 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
759 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
761 _GL_CXXALIASWARN (fmod);
762 #elif defined GNULIB_POSIXCHECK
764 # if HAVE_RAW_DECL_FMOD
765 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
766 "use gnulib module fmod for portability");
772 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
774 # define fmodl rpl_fmodl
776 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
777 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
781 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
783 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
785 _GL_CXXALIASWARN (fmodl);
786 #elif defined GNULIB_POSIXCHECK
788 # if HAVE_RAW_DECL_FMODL
789 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
790 "use gnulib module fmodl for portability");
798 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
799 If x is zero: mantissa = x, exp = 0.
800 If x is infinite or NaN: mantissa = x, exp unspecified.
801 Store exp in *EXPPTR and return mantissa. */
803 # if @REPLACE_FREXPF@
804 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
806 # define frexpf rpl_frexpf
808 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
809 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
813 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
815 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
817 _GL_CXXALIASWARN (frexpf);
818 #elif defined GNULIB_POSIXCHECK
820 # if HAVE_RAW_DECL_FREXPF
821 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
822 "use gnulib module frexpf for portability");
829 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
830 If x is zero: mantissa = x, exp = 0.
831 If x is infinite or NaN: mantissa = x, exp unspecified.
832 Store exp in *EXPPTR and return mantissa. */
835 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
836 # define frexp rpl_frexp
838 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
839 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
841 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
843 _GL_CXXALIASWARN (frexp);
844 #elif defined GNULIB_POSIXCHECK
846 /* Assume frexp is always declared. */
847 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
848 "use gnulib module frexp for portability");
854 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
855 If x is zero: mantissa = x, exp = 0.
856 If x is infinite or NaN: mantissa = x, exp unspecified.
857 Store exp in *EXPPTR and return mantissa. */
858 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
859 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
861 # define frexpl rpl_frexpl
863 _GL_FUNCDECL_RPL (frexpl, long double,
864 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
865 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
867 # if !@HAVE_DECL_FREXPL@
868 _GL_FUNCDECL_SYS (frexpl, long double,
869 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
872 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
875 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
876 _GL_CXXALIASWARN (frexpl);
878 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
880 # if HAVE_RAW_DECL_FREXPL
881 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
882 "use gnulib module frexpl for portability");
887 /* Return sqrt(x^2+y^2). */
889 # if @REPLACE_HYPOTF@
890 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
892 # define hypotf rpl_hypotf
894 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
895 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
898 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
900 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
902 _GL_CXXALIASWARN (hypotf);
903 #elif defined GNULIB_POSIXCHECK
905 # if HAVE_RAW_DECL_HYPOTF
906 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
907 "use gnulib module hypotf for portability");
911 /* Return sqrt(x^2+y^2). */
914 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
916 # define hypot rpl_hypot
918 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
919 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
921 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
923 _GL_CXXALIASWARN (hypot);
924 #elif defined GNULIB_POSIXCHECK
926 # if HAVE_RAW_DECL_HYPOT
927 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
928 "use gnulib module hypot for portability");
932 /* Return sqrt(x^2+y^2). */
934 # if @REPLACE_HYPOTL@
935 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
937 # define hypotl rpl_hypotl
939 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
940 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
943 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
945 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
947 _GL_CXXALIASWARN (hypotl);
948 #elif defined GNULIB_POSIXCHECK
950 # if HAVE_RAW_DECL_HYPOTL
951 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
952 "use gnulib module hypotl for portability");
957 /* Return x * 2^exp. */
961 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
963 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
964 _GL_CXXALIASWARN (ldexpf);
965 #elif defined GNULIB_POSIXCHECK
967 # if HAVE_RAW_DECL_LDEXPF
968 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
969 "use gnulib module ldexpf for portability");
973 /* Return x * 2^exp. */
974 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
975 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
977 # define ldexpl rpl_ldexpl
979 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
980 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
982 # if !@HAVE_DECL_LDEXPL@
983 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
986 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
990 _GL_CXXALIASWARN (ldexpl);
992 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
994 # if HAVE_RAW_DECL_LDEXPL
995 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
996 "use gnulib module ldexpl for portability");
1002 # if !@HAVE_DECL_LOGB@
1003 _GL_EXTERN_C double logb (double x);
1005 #elif defined GNULIB_POSIXCHECK
1007 # if HAVE_RAW_DECL_LOGB
1008 _GL_WARN_ON_USE (logb, "logb is unportable - "
1009 "use gnulib module logb for portability");
1017 _GL_FUNCDECL_SYS (logf, float, (float x));
1019 _GL_CXXALIAS_SYS (logf, float, (float x));
1020 _GL_CXXALIASWARN (logf);
1021 #elif defined GNULIB_POSIXCHECK
1023 # if HAVE_RAW_DECL_LOGF
1024 _GL_WARN_ON_USE (logf, "logf is unportable - "
1025 "use gnulib module logf for portability");
1030 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1032 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1034 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1035 _GL_CXXALIASWARN (logl);
1036 #elif defined GNULIB_POSIXCHECK
1038 # if HAVE_RAW_DECL_LOGL
1039 _GL_WARN_ON_USE (logl, "logl is unportable - "
1040 "use gnulib module logl for portability");
1048 _GL_FUNCDECL_SYS (log10f, float, (float x));
1050 _GL_CXXALIAS_SYS (log10f, float, (float x));
1051 _GL_CXXALIASWARN (log10f);
1052 #elif defined GNULIB_POSIXCHECK
1054 # if HAVE_RAW_DECL_LOG10F
1055 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1056 "use gnulib module log10f for portability");
1061 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1063 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1065 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1066 _GL_CXXALIASWARN (log10l);
1067 #elif defined GNULIB_POSIXCHECK
1069 # if HAVE_RAW_DECL_LOG10L
1070 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1071 "use gnulib module log10l for portability");
1077 # if @REPLACE_MODFF@
1078 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1080 # define modff rpl_modff
1082 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1083 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1087 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1089 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1091 _GL_CXXALIASWARN (modff);
1092 #elif defined GNULIB_POSIXCHECK
1094 # if HAVE_RAW_DECL_MODFF
1095 _GL_WARN_ON_USE (modff, "modff is unportable - "
1096 "use gnulib module modff for portability");
1102 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1104 # define modf rpl_modf
1106 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1107 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1109 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1111 _GL_CXXALIASWARN (modf);
1112 #elif defined GNULIB_POSIXCHECK
1114 # if HAVE_RAW_DECL_MODF
1115 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1116 "use gnulib module modf for portability");
1121 # if @REPLACE_MODFL@
1122 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1124 # define modfl rpl_modfl
1126 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1127 _GL_ARG_NONNULL ((2)));
1128 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1132 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1133 _GL_ARG_NONNULL ((2)));
1135 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1137 _GL_CXXALIASWARN (modfl);
1138 #elif defined GNULIB_POSIXCHECK
1140 # if HAVE_RAW_DECL_MODFL
1141 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1142 "use gnulib module modfl for portability");
1150 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1152 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1153 _GL_CXXALIASWARN (powf);
1154 #elif defined GNULIB_POSIXCHECK
1156 # if HAVE_RAW_DECL_POWF
1157 _GL_WARN_ON_USE (powf, "powf is unportable - "
1158 "use gnulib module powf for portability");
1163 #if @GNULIB_REMAINDERF@
1164 # if @REPLACE_REMAINDERF@
1165 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1167 # define remainderf rpl_remainderf
1169 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1170 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1172 # if !@HAVE_REMAINDERF@
1173 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1175 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1177 _GL_CXXALIASWARN (remainderf);
1178 #elif defined GNULIB_POSIXCHECK
1180 # if HAVE_RAW_DECL_REMAINDERF
1181 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1182 "use gnulib module remainderf for portability");
1186 #if @GNULIB_REMAINDER@
1187 # if @REPLACE_REMAINDER@
1188 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1190 # define remainder rpl_remainder
1192 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1193 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1195 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1196 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1198 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1200 _GL_CXXALIASWARN (remainder);
1201 #elif defined GNULIB_POSIXCHECK
1203 # if HAVE_RAW_DECL_REMAINDER
1204 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1205 "use gnulib module remainder for portability");
1209 #if @GNULIB_REMAINDERL@
1210 # if @REPLACE_REMAINDERL@
1211 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1213 # define remainderl rpl_remainderl
1215 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1216 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1218 # if !@HAVE_REMAINDERL@
1219 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1221 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1223 _GL_CXXALIASWARN (remainderl);
1224 #elif defined GNULIB_POSIXCHECK
1226 # if HAVE_RAW_DECL_REMAINDERL
1227 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1228 "use gnulib module remainderl for portability");
1235 _GL_FUNCDECL_SYS (rintf, float, (float x));
1237 _GL_CXXALIAS_SYS (rintf, float, (float x));
1238 _GL_CXXALIASWARN (rintf);
1239 #elif defined GNULIB_POSIXCHECK
1241 # if HAVE_RAW_DECL_RINTF
1242 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1243 "use gnulib module rintf for portability");
1249 _GL_FUNCDECL_SYS (rint, double, (double x));
1251 _GL_CXXALIAS_SYS (rint, double, (double x));
1252 _GL_CXXALIASWARN (rint);
1253 #elif defined GNULIB_POSIXCHECK
1255 # if HAVE_RAW_DECL_RINT
1256 _GL_WARN_ON_USE (rint, "rint is unportable - "
1257 "use gnulib module rint for portability");
1263 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1265 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1266 _GL_CXXALIASWARN (rintl);
1267 #elif defined GNULIB_POSIXCHECK
1269 # if HAVE_RAW_DECL_RINTL
1270 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1271 "use gnulib module rintl for portability");
1277 # if @REPLACE_ROUNDF@
1278 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1280 # define roundf rpl_roundf
1282 _GL_FUNCDECL_RPL (roundf, float, (float x));
1283 _GL_CXXALIAS_RPL (roundf, float, (float x));
1285 # if !@HAVE_DECL_ROUNDF@
1286 _GL_FUNCDECL_SYS (roundf, float, (float x));
1288 _GL_CXXALIAS_SYS (roundf, float, (float x));
1290 _GL_CXXALIASWARN (roundf);
1291 #elif defined GNULIB_POSIXCHECK
1293 # if HAVE_RAW_DECL_ROUNDF
1294 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1295 "use gnulib module roundf for portability");
1300 # if @REPLACE_ROUND@
1301 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1303 # define round rpl_round
1305 _GL_FUNCDECL_RPL (round, double, (double x));
1306 _GL_CXXALIAS_RPL (round, double, (double x));
1308 # if !@HAVE_DECL_ROUND@
1309 _GL_FUNCDECL_SYS (round, double, (double x));
1311 _GL_CXXALIAS_SYS (round, double, (double x));
1313 _GL_CXXALIASWARN (round);
1314 #elif defined GNULIB_POSIXCHECK
1316 # if HAVE_RAW_DECL_ROUND
1317 _GL_WARN_ON_USE (round, "round is unportable - "
1318 "use gnulib module round for portability");
1323 # if @REPLACE_ROUNDL@
1324 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1326 # define roundl rpl_roundl
1328 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1329 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1331 # if !@HAVE_DECL_ROUNDL@
1332 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1334 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1336 _GL_CXXALIASWARN (roundl);
1337 #elif defined GNULIB_POSIXCHECK
1339 # if HAVE_RAW_DECL_ROUNDL
1340 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1341 "use gnulib module roundl for portability");
1349 _GL_FUNCDECL_SYS (sinf, float, (float x));
1351 _GL_CXXALIAS_SYS (sinf, float, (float x));
1352 _GL_CXXALIASWARN (sinf);
1353 #elif defined GNULIB_POSIXCHECK
1355 # if HAVE_RAW_DECL_SINF
1356 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1357 "use gnulib module sinf for portability");
1362 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1364 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1366 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1367 _GL_CXXALIASWARN (sinl);
1368 #elif defined GNULIB_POSIXCHECK
1370 # if HAVE_RAW_DECL_SINL
1371 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1372 "use gnulib module sinl for portability");
1380 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1382 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1383 _GL_CXXALIASWARN (sinhf);
1384 #elif defined GNULIB_POSIXCHECK
1386 # if HAVE_RAW_DECL_SINHF
1387 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1388 "use gnulib module sinhf for portability");
1396 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1398 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1399 _GL_CXXALIASWARN (sqrtf);
1400 #elif defined GNULIB_POSIXCHECK
1402 # if HAVE_RAW_DECL_SQRTF
1403 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1404 "use gnulib module sqrtf for portability");
1409 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1411 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1413 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1414 _GL_CXXALIASWARN (sqrtl);
1415 #elif defined GNULIB_POSIXCHECK
1417 # if HAVE_RAW_DECL_SQRTL
1418 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1419 "use gnulib module sqrtl for portability");
1427 _GL_FUNCDECL_SYS (tanf, float, (float x));
1429 _GL_CXXALIAS_SYS (tanf, float, (float x));
1430 _GL_CXXALIASWARN (tanf);
1431 #elif defined GNULIB_POSIXCHECK
1433 # if HAVE_RAW_DECL_TANF
1434 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1435 "use gnulib module tanf for portability");
1440 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1442 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1444 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1445 _GL_CXXALIASWARN (tanl);
1446 #elif defined GNULIB_POSIXCHECK
1448 # if HAVE_RAW_DECL_TANL
1449 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1450 "use gnulib module tanl for portability");
1458 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1460 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1461 _GL_CXXALIASWARN (tanhf);
1462 #elif defined GNULIB_POSIXCHECK
1464 # if HAVE_RAW_DECL_TANHF
1465 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1466 "use gnulib module tanhf for portability");
1472 # if @REPLACE_TRUNCF@
1473 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1474 # define truncf rpl_truncf
1476 _GL_FUNCDECL_RPL (truncf, float, (float x));
1477 _GL_CXXALIAS_RPL (truncf, float, (float x));
1479 # if !@HAVE_DECL_TRUNCF@
1480 _GL_FUNCDECL_SYS (truncf, float, (float x));
1482 _GL_CXXALIAS_SYS (truncf, float, (float x));
1484 _GL_CXXALIASWARN (truncf);
1485 #elif defined GNULIB_POSIXCHECK
1487 # if HAVE_RAW_DECL_TRUNCF
1488 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1489 "use gnulib module truncf for portability");
1494 # if @REPLACE_TRUNC@
1495 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1496 # define trunc rpl_trunc
1498 _GL_FUNCDECL_RPL (trunc, double, (double x));
1499 _GL_CXXALIAS_RPL (trunc, double, (double x));
1501 # if !@HAVE_DECL_TRUNC@
1502 _GL_FUNCDECL_SYS (trunc, double, (double x));
1504 _GL_CXXALIAS_SYS (trunc, double, (double x));
1506 _GL_CXXALIASWARN (trunc);
1507 #elif defined GNULIB_POSIXCHECK
1509 # if HAVE_RAW_DECL_TRUNC
1510 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1511 "use gnulib module trunc for portability");
1516 # if @REPLACE_TRUNCL@
1517 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1519 # define truncl rpl_truncl
1521 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1522 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1524 # if !@HAVE_DECL_TRUNCL@
1525 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1527 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1529 _GL_CXXALIASWARN (truncl);
1530 #elif defined GNULIB_POSIXCHECK
1532 # if HAVE_RAW_DECL_TRUNCL
1533 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1534 "use gnulib module truncl for portability");
1539 /* Definitions of function-like macros come here, after the function
1543 #if @GNULIB_ISFINITE@
1544 # if @REPLACE_ISFINITE@
1545 _GL_EXTERN_C int gl_isfinitef (float x);
1546 _GL_EXTERN_C int gl_isfinited (double x);
1547 _GL_EXTERN_C int gl_isfinitel (long double x);
1549 # define isfinite(x) \
1550 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1551 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1556 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1558 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1561 #elif defined GNULIB_POSIXCHECK
1562 # if defined isfinite
1563 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1565 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1571 # if @REPLACE_ISINF@
1572 _GL_EXTERN_C int gl_isinff (float x);
1573 _GL_EXTERN_C int gl_isinfd (double x);
1574 _GL_EXTERN_C int gl_isinfl (long double x);
1577 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1578 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1583 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1585 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1588 #elif defined GNULIB_POSIXCHECK
1590 _GL_WARN_REAL_FLOATING_DECL (isinf);
1592 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1598 /* Test for NaN for 'float' numbers. */
1600 /* The original <math.h> included above provides a declaration of isnan macro
1601 or (older) isnanf function. */
1603 /* GCC 4.0 and newer provides three built-ins for isnan. */
1605 # define isnanf(x) __builtin_isnanf ((float)(x))
1606 # elif defined isnan
1608 # define isnanf(x) isnan ((float)(x))
1611 /* Test whether X is a NaN. */
1613 # define isnanf rpl_isnanf
1614 _GL_EXTERN_C int isnanf (float x);
1619 /* Test for NaN for 'double' numbers.
1620 This function is a gnulib extension, unlike isnan() which applied only
1621 to 'double' numbers earlier but now is a type-generic macro. */
1623 /* The original <math.h> included above provides a declaration of isnan
1626 /* GCC 4.0 and newer provides three built-ins for isnan. */
1628 # define isnand(x) __builtin_isnan ((double)(x))
1631 # define isnand(x) isnan ((double)(x))
1634 /* Test whether X is a NaN. */
1636 # define isnand rpl_isnand
1637 _GL_EXTERN_C int isnand (double x);
1642 /* Test for NaN for 'long double' numbers. */
1644 /* The original <math.h> included above provides a declaration of isnan
1645 macro or (older) isnanl function. */
1647 /* GCC 4.0 and newer provides three built-ins for isnan. */
1649 # define isnanl(x) __builtin_isnanl ((long double)(x))
1650 # elif defined isnan
1652 # define isnanl(x) isnan ((long double)(x))
1655 /* Test whether X is a NaN. */
1657 # define isnanl rpl_isnanl
1658 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1662 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1664 # if @REPLACE_ISNAN@
1665 /* We can't just use the isnanf macro (e.g.) as exposed by
1666 isnanf.h (e.g.) here, because those may end up being macros
1667 that recursively expand back to isnan. So use the gnulib
1668 replacements for them directly. */
1669 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1670 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1672 _GL_EXTERN_C int rpl_isnanf (float x);
1673 # define gl_isnan_f(x) rpl_isnanf (x)
1675 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1676 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1678 _GL_EXTERN_C int rpl_isnand (double x);
1679 # define gl_isnan_d(x) rpl_isnand (x)
1681 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1682 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1684 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1685 # define gl_isnan_l(x) rpl_isnanl (x)
1689 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1690 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1692 # elif __GNUC__ >= 4
1695 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1696 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1697 __builtin_isnanf ((float)(x)))
1701 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1703 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1706 /* Ensure isnan is a macro. */
1708 # define isnan isnan
1711 #elif defined GNULIB_POSIXCHECK
1713 _GL_WARN_REAL_FLOATING_DECL (isnan);
1715 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1720 #if @GNULIB_SIGNBIT@
1721 # if @REPLACE_SIGNBIT_USING_GCC@
1723 /* GCC 4.0 and newer provides three built-ins for signbit. */
1724 # define signbit(x) \
1725 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1726 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1727 __builtin_signbitf (x))
1729 # if @REPLACE_SIGNBIT@
1731 _GL_EXTERN_C int gl_signbitf (float arg);
1732 _GL_EXTERN_C int gl_signbitd (double arg);
1733 _GL_EXTERN_C int gl_signbitl (long double arg);
1734 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1735 # define _GL_NUM_UINT_WORDS(type) \
1736 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1737 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1738 # define gl_signbitf_OPTIMIZED_MACRO
1739 # define gl_signbitf(arg) \
1740 ({ union { float _value; \
1741 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1743 _m._value = (arg); \
1744 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1747 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1748 # define gl_signbitd_OPTIMIZED_MACRO
1749 # define gl_signbitd(arg) \
1750 ({ union { double _value; \
1751 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1753 _m._value = (arg); \
1754 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1757 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1758 # define gl_signbitl_OPTIMIZED_MACRO
1759 # define gl_signbitl(arg) \
1760 ({ union { long double _value; \
1761 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1763 _m._value = (arg); \
1764 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1768 # define signbit(x) \
1769 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1770 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1775 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1777 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1780 #elif defined GNULIB_POSIXCHECK
1781 # if defined signbit
1782 _GL_WARN_REAL_FLOATING_DECL (signbit);
1784 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1789 #endif /* _@GUARD_PREFIX@_MATH_H */
1790 #endif /* _@GUARD_PREFIX@_MATH_H */