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");
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 mathl 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 mathl for portability");
538 _GL_FUNCDECL_SYS (fabsf, float, (float x));
540 _GL_CXXALIAS_SYS (fabsf, float, (float x));
541 _GL_CXXALIASWARN (fabsf);
542 #elif defined GNULIB_POSIXCHECK
544 # if HAVE_RAW_DECL_FABSF
545 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
546 "use gnulib module fabsf for portability");
552 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
554 # define fabsl rpl_fabsl
556 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
557 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
561 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
563 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
565 _GL_CXXALIASWARN (fabsl);
566 #elif defined GNULIB_POSIXCHECK
568 # if HAVE_RAW_DECL_FABSL
569 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
570 "use gnulib module fabsl for portability");
576 # if @REPLACE_FLOORF@
577 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
579 # define floorf rpl_floorf
581 _GL_FUNCDECL_RPL (floorf, float, (float x));
582 _GL_CXXALIAS_RPL (floorf, float, (float x));
584 # if !@HAVE_DECL_FLOORF@
586 _GL_FUNCDECL_SYS (floorf, float, (float x));
588 _GL_CXXALIAS_SYS (floorf, float, (float x));
590 _GL_CXXALIASWARN (floorf);
591 #elif defined GNULIB_POSIXCHECK
593 # if HAVE_RAW_DECL_FLOORF
594 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
595 "use gnulib module floorf for portability");
601 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
602 # define floor rpl_floor
604 _GL_FUNCDECL_RPL (floor, double, (double x));
605 _GL_CXXALIAS_RPL (floor, double, (double x));
607 _GL_CXXALIAS_SYS (floor, double, (double x));
609 _GL_CXXALIASWARN (floor);
613 # if @REPLACE_FLOORL@
614 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
616 # define floorl rpl_floorl
618 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
619 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
621 # if !@HAVE_DECL_FLOORL@
623 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
625 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
627 _GL_CXXALIASWARN (floorl);
628 #elif defined GNULIB_POSIXCHECK
630 # if HAVE_RAW_DECL_FLOORL
631 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
632 "use gnulib module floorl for portability");
639 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
641 # define fmaf rpl_fmaf
643 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
644 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
647 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
649 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
651 _GL_CXXALIASWARN (fmaf);
652 #elif defined GNULIB_POSIXCHECK
654 # if HAVE_RAW_DECL_FMAF
655 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
656 "use gnulib module fmaf for portability");
662 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
666 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
667 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
670 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
672 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
674 _GL_CXXALIASWARN (fma);
675 #elif defined GNULIB_POSIXCHECK
677 # if HAVE_RAW_DECL_FMA
678 _GL_WARN_ON_USE (fma, "fma is unportable - "
679 "use gnulib module fma for portability");
685 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
687 # define fmal rpl_fmal
689 _GL_FUNCDECL_RPL (fmal, long double,
690 (long double x, long double y, long double z));
691 _GL_CXXALIAS_RPL (fmal, long double,
692 (long double x, long double y, long double z));
695 _GL_FUNCDECL_SYS (fmal, long double,
696 (long double x, long double y, long double z));
698 _GL_CXXALIAS_SYS (fmal, long double,
699 (long double x, long double y, long double z));
701 _GL_CXXALIASWARN (fmal);
702 #elif defined GNULIB_POSIXCHECK
704 # if HAVE_RAW_DECL_FMAL
705 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
706 "use gnulib module fmal for portability");
713 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
715 # define fmodf rpl_fmodf
717 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
718 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
722 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
724 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
726 _GL_CXXALIASWARN (fmodf);
727 #elif defined GNULIB_POSIXCHECK
729 # if HAVE_RAW_DECL_FMODF
730 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
731 "use gnulib module fmodf for portability");
737 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
739 # define fmod rpl_fmod
741 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
742 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
744 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
746 _GL_CXXALIASWARN (fmod);
747 #elif defined GNULIB_POSIXCHECK
749 # if HAVE_RAW_DECL_FMOD
750 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
751 "use gnulib module fmod for portability");
757 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
759 # define fmodl rpl_fmodl
761 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
762 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
766 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
768 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
770 _GL_CXXALIASWARN (fmodl);
771 #elif defined GNULIB_POSIXCHECK
773 # if HAVE_RAW_DECL_FMODL
774 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
775 "use gnulib module fmodl for portability");
783 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
784 If x is zero: mantissa = x, exp = 0.
785 If x is infinite or NaN: mantissa = x, exp unspecified.
786 Store exp in *EXPPTR and return mantissa. */
788 # if @REPLACE_FREXPF@
789 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
791 # define frexpf rpl_frexpf
793 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
794 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
798 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
800 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
802 _GL_CXXALIASWARN (frexpf);
803 #elif defined GNULIB_POSIXCHECK
805 # if HAVE_RAW_DECL_FREXPF
806 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
807 "use gnulib module frexpf for portability");
814 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
815 If x is zero: mantissa = x, exp = 0.
816 If x is infinite or NaN: mantissa = x, exp unspecified.
817 Store exp in *EXPPTR and return mantissa. */
820 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
821 # define frexp rpl_frexp
823 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
824 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
826 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
828 _GL_CXXALIASWARN (frexp);
829 #elif defined GNULIB_POSIXCHECK
831 /* Assume frexp is always declared. */
832 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
833 "use gnulib module frexp for portability");
839 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
840 If x is zero: mantissa = x, exp = 0.
841 If x is infinite or NaN: mantissa = x, exp unspecified.
842 Store exp in *EXPPTR and return mantissa. */
843 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
844 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
846 # define frexpl rpl_frexpl
848 _GL_FUNCDECL_RPL (frexpl, long double,
849 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
850 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
852 # if !@HAVE_DECL_FREXPL@
853 _GL_FUNCDECL_SYS (frexpl, long double,
854 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
857 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
860 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
861 _GL_CXXALIASWARN (frexpl);
863 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
865 # if HAVE_RAW_DECL_FREXPL
866 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
867 "use gnulib module frexpl for portability");
872 /* Return sqrt(x^2+y^2). */
874 # if @REPLACE_HYPOTF@
875 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
877 # define hypotf rpl_hypotf
879 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
880 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
883 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
885 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
887 _GL_CXXALIASWARN (hypotf);
888 #elif defined GNULIB_POSIXCHECK
890 # if HAVE_RAW_DECL_HYPOTF
891 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
892 "use gnulib module hypotf for portability");
896 /* Return sqrt(x^2+y^2). */
899 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
901 # define hypot rpl_hypot
903 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
904 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
906 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
908 _GL_CXXALIASWARN (hypot);
909 #elif defined GNULIB_POSIXCHECK
911 # if HAVE_RAW_DECL_HYPOT
912 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
913 "use gnulib module hypot for portability");
917 /* Return sqrt(x^2+y^2). */
919 # if @REPLACE_HYPOTL@
920 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
922 # define hypotl rpl_hypotl
924 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
925 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
928 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
930 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
932 _GL_CXXALIASWARN (hypotl);
933 #elif defined GNULIB_POSIXCHECK
935 # if HAVE_RAW_DECL_HYPOTL
936 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
937 "use gnulib module hypotl for portability");
942 /* Return x * 2^exp. */
946 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
948 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
949 _GL_CXXALIASWARN (ldexpf);
950 #elif defined GNULIB_POSIXCHECK
952 # if HAVE_RAW_DECL_LDEXPF
953 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
954 "use gnulib module ldexpf for portability");
958 /* Return x * 2^exp. */
959 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
960 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
962 # define ldexpl rpl_ldexpl
964 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
965 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
967 # if !@HAVE_DECL_LDEXPL@
968 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
971 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
975 _GL_CXXALIASWARN (ldexpl);
977 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
979 # if HAVE_RAW_DECL_LDEXPL
980 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
981 "use gnulib module ldexpl for portability");
987 # if !@HAVE_DECL_LOGB@
988 _GL_EXTERN_C double logb (double x);
990 #elif defined GNULIB_POSIXCHECK
992 # if HAVE_RAW_DECL_LOGB
993 _GL_WARN_ON_USE (logb, "logb is unportable - "
994 "use gnulib module logb for portability");
1002 _GL_FUNCDECL_SYS (logf, float, (float x));
1004 _GL_CXXALIAS_SYS (logf, float, (float x));
1005 _GL_CXXALIASWARN (logf);
1006 #elif defined GNULIB_POSIXCHECK
1008 # if HAVE_RAW_DECL_LOGF
1009 _GL_WARN_ON_USE (logf, "logf is unportable - "
1010 "use gnulib module logf for portability");
1015 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1017 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1019 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1020 _GL_CXXALIASWARN (logl);
1021 #elif defined GNULIB_POSIXCHECK
1023 # if HAVE_RAW_DECL_LOGL
1024 _GL_WARN_ON_USE (logl, "logl is unportable - "
1025 "use gnulib module mathl for portability");
1033 _GL_FUNCDECL_SYS (log10f, float, (float x));
1035 _GL_CXXALIAS_SYS (log10f, float, (float x));
1036 _GL_CXXALIASWARN (log10f);
1037 #elif defined GNULIB_POSIXCHECK
1039 # if HAVE_RAW_DECL_LOG10F
1040 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1041 "use gnulib module log10f for portability");
1046 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1048 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1050 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1051 _GL_CXXALIASWARN (log10l);
1052 #elif defined GNULIB_POSIXCHECK
1054 # if HAVE_RAW_DECL_LOG10L
1055 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1056 "use gnulib module log10l for portability");
1062 # if @REPLACE_MODFF@
1063 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1065 # define modff rpl_modff
1067 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1068 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1072 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1074 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1076 _GL_CXXALIASWARN (modff);
1077 #elif defined GNULIB_POSIXCHECK
1079 # if HAVE_RAW_DECL_MODFF
1080 _GL_WARN_ON_USE (modff, "modff is unportable - "
1081 "use gnulib module modff for portability");
1087 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1089 # define modf rpl_modf
1091 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1092 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1094 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1096 _GL_CXXALIASWARN (modf);
1097 #elif defined GNULIB_POSIXCHECK
1099 # if HAVE_RAW_DECL_MODF
1100 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1101 "use gnulib module modf for portability");
1106 # if @REPLACE_MODFL@
1107 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1109 # define modfl rpl_modfl
1111 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1112 _GL_ARG_NONNULL ((2)));
1113 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1117 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1118 _GL_ARG_NONNULL ((2)));
1120 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1122 _GL_CXXALIASWARN (modfl);
1123 #elif defined GNULIB_POSIXCHECK
1125 # if HAVE_RAW_DECL_MODFL
1126 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1127 "use gnulib module modfl for portability");
1135 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1137 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1138 _GL_CXXALIASWARN (powf);
1139 #elif defined GNULIB_POSIXCHECK
1141 # if HAVE_RAW_DECL_POWF
1142 _GL_WARN_ON_USE (powf, "powf is unportable - "
1143 "use gnulib module powf for portability");
1148 #if @GNULIB_REMAINDERF@
1149 # if @REPLACE_REMAINDERF@
1150 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1152 # define remainderf rpl_remainderf
1154 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1155 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1157 # if !@HAVE_REMAINDERF@
1158 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1160 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1162 _GL_CXXALIASWARN (remainderf);
1163 #elif defined GNULIB_POSIXCHECK
1165 # if HAVE_RAW_DECL_REMAINDERF
1166 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1167 "use gnulib module remainderf for portability");
1171 #if @GNULIB_REMAINDER@
1172 # if @REPLACE_REMAINDER@
1173 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1175 # define remainder rpl_remainder
1177 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1178 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1180 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1181 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1183 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1185 _GL_CXXALIASWARN (remainder);
1186 #elif defined GNULIB_POSIXCHECK
1188 # if HAVE_RAW_DECL_REMAINDER
1189 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1190 "use gnulib module remainder for portability");
1194 #if @GNULIB_REMAINDERL@
1195 # if @REPLACE_REMAINDERL@
1196 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1198 # define remainderl rpl_remainderl
1200 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1201 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1203 # if !@HAVE_REMAINDERL@
1204 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1206 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1208 _GL_CXXALIASWARN (remainderl);
1209 #elif defined GNULIB_POSIXCHECK
1211 # if HAVE_RAW_DECL_REMAINDERL
1212 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1213 "use gnulib module remainderl for portability");
1220 _GL_FUNCDECL_SYS (rintf, float, (float x));
1222 _GL_CXXALIAS_SYS (rintf, float, (float x));
1223 _GL_CXXALIASWARN (rintf);
1224 #elif defined GNULIB_POSIXCHECK
1226 # if HAVE_RAW_DECL_RINTF
1227 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1228 "use gnulib module rintf for portability");
1234 _GL_FUNCDECL_SYS (rint, double, (double x));
1236 _GL_CXXALIAS_SYS (rint, double, (double x));
1237 _GL_CXXALIASWARN (rint);
1238 #elif defined GNULIB_POSIXCHECK
1240 # if HAVE_RAW_DECL_RINT
1241 _GL_WARN_ON_USE (rint, "rint is unportable - "
1242 "use gnulib module rint for portability");
1248 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1250 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1251 _GL_CXXALIASWARN (rintl);
1252 #elif defined GNULIB_POSIXCHECK
1254 # if HAVE_RAW_DECL_RINTL
1255 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1256 "use gnulib module rintl for portability");
1262 # if @REPLACE_ROUNDF@
1263 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1265 # define roundf rpl_roundf
1267 _GL_FUNCDECL_RPL (roundf, float, (float x));
1268 _GL_CXXALIAS_RPL (roundf, float, (float x));
1270 # if !@HAVE_DECL_ROUNDF@
1271 _GL_FUNCDECL_SYS (roundf, float, (float x));
1273 _GL_CXXALIAS_SYS (roundf, float, (float x));
1275 _GL_CXXALIASWARN (roundf);
1276 #elif defined GNULIB_POSIXCHECK
1278 # if HAVE_RAW_DECL_ROUNDF
1279 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1280 "use gnulib module roundf for portability");
1285 # if @REPLACE_ROUND@
1286 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1288 # define round rpl_round
1290 _GL_FUNCDECL_RPL (round, double, (double x));
1291 _GL_CXXALIAS_RPL (round, double, (double x));
1293 # if !@HAVE_DECL_ROUND@
1294 _GL_FUNCDECL_SYS (round, double, (double x));
1296 _GL_CXXALIAS_SYS (round, double, (double x));
1298 _GL_CXXALIASWARN (round);
1299 #elif defined GNULIB_POSIXCHECK
1301 # if HAVE_RAW_DECL_ROUND
1302 _GL_WARN_ON_USE (round, "round is unportable - "
1303 "use gnulib module round for portability");
1308 # if @REPLACE_ROUNDL@
1309 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1311 # define roundl rpl_roundl
1313 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1314 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1316 # if !@HAVE_DECL_ROUNDL@
1317 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1319 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1321 _GL_CXXALIASWARN (roundl);
1322 #elif defined GNULIB_POSIXCHECK
1324 # if HAVE_RAW_DECL_ROUNDL
1325 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1326 "use gnulib module roundl for portability");
1334 _GL_FUNCDECL_SYS (sinf, float, (float x));
1336 _GL_CXXALIAS_SYS (sinf, float, (float x));
1337 _GL_CXXALIASWARN (sinf);
1338 #elif defined GNULIB_POSIXCHECK
1340 # if HAVE_RAW_DECL_SINF
1341 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1342 "use gnulib module sinf for portability");
1347 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1349 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1351 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1352 _GL_CXXALIASWARN (sinl);
1353 #elif defined GNULIB_POSIXCHECK
1355 # if HAVE_RAW_DECL_SINL
1356 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1357 "use gnulib module mathl for portability");
1365 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1367 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1368 _GL_CXXALIASWARN (sinhf);
1369 #elif defined GNULIB_POSIXCHECK
1371 # if HAVE_RAW_DECL_SINHF
1372 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1373 "use gnulib module sinhf for portability");
1381 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1383 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1384 _GL_CXXALIASWARN (sqrtf);
1385 #elif defined GNULIB_POSIXCHECK
1387 # if HAVE_RAW_DECL_SQRTF
1388 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1389 "use gnulib module sqrtf for portability");
1394 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1396 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1398 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1399 _GL_CXXALIASWARN (sqrtl);
1400 #elif defined GNULIB_POSIXCHECK
1402 # if HAVE_RAW_DECL_SQRTL
1403 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1404 "use gnulib module mathl for portability");
1412 _GL_FUNCDECL_SYS (tanf, float, (float x));
1414 _GL_CXXALIAS_SYS (tanf, float, (float x));
1415 _GL_CXXALIASWARN (tanf);
1416 #elif defined GNULIB_POSIXCHECK
1418 # if HAVE_RAW_DECL_TANF
1419 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1420 "use gnulib module tanf for portability");
1425 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1427 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1429 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1430 _GL_CXXALIASWARN (tanl);
1431 #elif defined GNULIB_POSIXCHECK
1433 # if HAVE_RAW_DECL_TANL
1434 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1435 "use gnulib module mathl for portability");
1443 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1445 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1446 _GL_CXXALIASWARN (tanhf);
1447 #elif defined GNULIB_POSIXCHECK
1449 # if HAVE_RAW_DECL_TANHF
1450 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1451 "use gnulib module tanhf for portability");
1457 # if @REPLACE_TRUNCF@
1458 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1459 # define truncf rpl_truncf
1461 _GL_FUNCDECL_RPL (truncf, float, (float x));
1462 _GL_CXXALIAS_RPL (truncf, float, (float x));
1464 # if !@HAVE_DECL_TRUNCF@
1465 _GL_FUNCDECL_SYS (truncf, float, (float x));
1467 _GL_CXXALIAS_SYS (truncf, float, (float x));
1469 _GL_CXXALIASWARN (truncf);
1470 #elif defined GNULIB_POSIXCHECK
1472 # if HAVE_RAW_DECL_TRUNCF
1473 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1474 "use gnulib module truncf for portability");
1479 # if @REPLACE_TRUNC@
1480 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1481 # define trunc rpl_trunc
1483 _GL_FUNCDECL_RPL (trunc, double, (double x));
1484 _GL_CXXALIAS_RPL (trunc, double, (double x));
1486 # if !@HAVE_DECL_TRUNC@
1487 _GL_FUNCDECL_SYS (trunc, double, (double x));
1489 _GL_CXXALIAS_SYS (trunc, double, (double x));
1491 _GL_CXXALIASWARN (trunc);
1492 #elif defined GNULIB_POSIXCHECK
1494 # if HAVE_RAW_DECL_TRUNC
1495 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1496 "use gnulib module trunc for portability");
1501 # if @REPLACE_TRUNCL@
1502 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1504 # define truncl rpl_truncl
1506 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1507 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1509 # if !@HAVE_DECL_TRUNCL@
1510 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1512 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1514 _GL_CXXALIASWARN (truncl);
1515 #elif defined GNULIB_POSIXCHECK
1517 # if HAVE_RAW_DECL_TRUNCL
1518 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1519 "use gnulib module truncl for portability");
1524 /* Definitions of function-like macros come here, after the function
1528 #if @GNULIB_ISFINITE@
1529 # if @REPLACE_ISFINITE@
1530 _GL_EXTERN_C int gl_isfinitef (float x);
1531 _GL_EXTERN_C int gl_isfinited (double x);
1532 _GL_EXTERN_C int gl_isfinitel (long double x);
1534 # define isfinite(x) \
1535 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1536 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1541 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1543 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1546 #elif defined GNULIB_POSIXCHECK
1547 # if defined isfinite
1548 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1550 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1556 # if @REPLACE_ISINF@
1557 _GL_EXTERN_C int gl_isinff (float x);
1558 _GL_EXTERN_C int gl_isinfd (double x);
1559 _GL_EXTERN_C int gl_isinfl (long double x);
1562 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1563 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1568 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1570 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1573 #elif defined GNULIB_POSIXCHECK
1575 _GL_WARN_REAL_FLOATING_DECL (isinf);
1577 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1583 /* Test for NaN for 'float' numbers. */
1585 /* The original <math.h> included above provides a declaration of isnan macro
1586 or (older) isnanf function. */
1588 /* GCC 4.0 and newer provides three built-ins for isnan. */
1590 # define isnanf(x) __builtin_isnanf ((float)(x))
1591 # elif defined isnan
1593 # define isnanf(x) isnan ((float)(x))
1596 /* Test whether X is a NaN. */
1598 # define isnanf rpl_isnanf
1599 _GL_EXTERN_C int isnanf (float x);
1604 /* Test for NaN for 'double' numbers.
1605 This function is a gnulib extension, unlike isnan() which applied only
1606 to 'double' numbers earlier but now is a type-generic macro. */
1608 /* The original <math.h> included above provides a declaration of isnan
1611 /* GCC 4.0 and newer provides three built-ins for isnan. */
1613 # define isnand(x) __builtin_isnan ((double)(x))
1616 # define isnand(x) isnan ((double)(x))
1619 /* Test whether X is a NaN. */
1621 # define isnand rpl_isnand
1622 _GL_EXTERN_C int isnand (double x);
1627 /* Test for NaN for 'long double' numbers. */
1629 /* The original <math.h> included above provides a declaration of isnan
1630 macro or (older) isnanl function. */
1632 /* GCC 4.0 and newer provides three built-ins for isnan. */
1634 # define isnanl(x) __builtin_isnanl ((long double)(x))
1635 # elif defined isnan
1637 # define isnanl(x) isnan ((long double)(x))
1640 /* Test whether X is a NaN. */
1642 # define isnanl rpl_isnanl
1643 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1647 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1649 # if @REPLACE_ISNAN@
1650 /* We can't just use the isnanf macro (e.g.) as exposed by
1651 isnanf.h (e.g.) here, because those may end up being macros
1652 that recursively expand back to isnan. So use the gnulib
1653 replacements for them directly. */
1654 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1655 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1657 _GL_EXTERN_C int rpl_isnanf (float x);
1658 # define gl_isnan_f(x) rpl_isnanf (x)
1660 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1661 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1663 _GL_EXTERN_C int rpl_isnand (double x);
1664 # define gl_isnan_d(x) rpl_isnand (x)
1666 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1667 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1669 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1670 # define gl_isnan_l(x) rpl_isnanl (x)
1674 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1675 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1677 # elif __GNUC__ >= 4
1680 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1681 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1682 __builtin_isnanf ((float)(x)))
1686 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1688 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1691 /* Ensure isnan is a macro. */
1693 # define isnan isnan
1696 #elif defined GNULIB_POSIXCHECK
1698 _GL_WARN_REAL_FLOATING_DECL (isnan);
1700 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1705 #if @GNULIB_SIGNBIT@
1706 # if @REPLACE_SIGNBIT_USING_GCC@
1708 /* GCC 4.0 and newer provides three built-ins for signbit. */
1709 # define signbit(x) \
1710 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1711 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1712 __builtin_signbitf (x))
1714 # if @REPLACE_SIGNBIT@
1716 _GL_EXTERN_C int gl_signbitf (float arg);
1717 _GL_EXTERN_C int gl_signbitd (double arg);
1718 _GL_EXTERN_C int gl_signbitl (long double arg);
1719 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1720 # define _GL_NUM_UINT_WORDS(type) \
1721 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1722 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1723 # define gl_signbitf_OPTIMIZED_MACRO
1724 # define gl_signbitf(arg) \
1725 ({ union { float _value; \
1726 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1728 _m._value = (arg); \
1729 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1732 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1733 # define gl_signbitd_OPTIMIZED_MACRO
1734 # define gl_signbitd(arg) \
1735 ({ union { double _value; \
1736 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1738 _m._value = (arg); \
1739 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1742 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1743 # define gl_signbitl_OPTIMIZED_MACRO
1744 # define gl_signbitl(arg) \
1745 ({ union { long double _value; \
1746 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1748 _m._value = (arg); \
1749 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1753 # define signbit(x) \
1754 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1755 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1760 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1762 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1765 #elif defined GNULIB_POSIXCHECK
1766 # if defined signbit
1767 _GL_WARN_REAL_FLOATING_DECL (signbit);
1769 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1774 #endif /* _@GUARD_PREFIX@_MATH_H */
1775 #endif /* _@GUARD_PREFIX@_MATH_H */