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_DECL_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 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
539 # define exp2 rpl_exp2
541 _GL_FUNCDECL_RPL (exp2, double, (double x));
542 _GL_CXXALIAS_RPL (exp2, double, (double x));
544 # if !@HAVE_DECL_EXP2@
545 _GL_FUNCDECL_SYS (exp2, double, (double x));
547 _GL_CXXALIAS_SYS (exp2, double, (double x));
549 _GL_CXXALIASWARN (exp2);
550 #elif defined GNULIB_POSIXCHECK
552 # if HAVE_RAW_DECL_EXP2
553 _GL_WARN_ON_USE (exp2, "exp2 is unportable - "
554 "use gnulib module exp2 for portability");
560 # if @REPLACE_EXPM1F@
561 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
563 # define expm1f rpl_expm1f
565 _GL_FUNCDECL_RPL (expm1f, float, (float x));
566 _GL_CXXALIAS_RPL (expm1f, float, (float x));
569 _GL_FUNCDECL_SYS (expm1f, float, (float x));
571 _GL_CXXALIAS_SYS (expm1f, float, (float x));
573 _GL_CXXALIASWARN (expm1f);
574 #elif defined GNULIB_POSIXCHECK
576 # if HAVE_RAW_DECL_EXPM1F
577 _GL_WARN_ON_USE (expm1f, "expm1f is unportable - "
578 "use gnulib module expm1f for portability");
584 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
586 # define expm1 rpl_expm1
588 _GL_FUNCDECL_RPL (expm1, double, (double x));
589 _GL_CXXALIAS_RPL (expm1, double, (double x));
592 _GL_FUNCDECL_SYS (expm1, double, (double x));
594 _GL_CXXALIAS_SYS (expm1, double, (double x));
596 _GL_CXXALIASWARN (expm1);
597 #elif defined GNULIB_POSIXCHECK
599 # if HAVE_RAW_DECL_EXPM1
600 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
601 "use gnulib module expm1 for portability");
606 # if !@HAVE_DECL_EXPM1L@
608 _GL_FUNCDECL_SYS (expm1l, long double, (long double x));
610 _GL_CXXALIAS_SYS (expm1l, long double, (long double x));
611 _GL_CXXALIASWARN (expm1l);
612 #elif defined GNULIB_POSIXCHECK
614 # if HAVE_RAW_DECL_EXPM1L
615 _GL_WARN_ON_USE (expm1l, "expm1l is unportable - "
616 "use gnulib module expm1l for portability");
624 _GL_FUNCDECL_SYS (fabsf, float, (float x));
626 _GL_CXXALIAS_SYS (fabsf, float, (float x));
627 _GL_CXXALIASWARN (fabsf);
628 #elif defined GNULIB_POSIXCHECK
630 # if HAVE_RAW_DECL_FABSF
631 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
632 "use gnulib module fabsf for portability");
638 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
640 # define fabsl rpl_fabsl
642 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
643 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
647 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
649 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
651 _GL_CXXALIASWARN (fabsl);
652 #elif defined GNULIB_POSIXCHECK
654 # if HAVE_RAW_DECL_FABSL
655 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
656 "use gnulib module fabsl for portability");
662 # if @REPLACE_FLOORF@
663 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
665 # define floorf rpl_floorf
667 _GL_FUNCDECL_RPL (floorf, float, (float x));
668 _GL_CXXALIAS_RPL (floorf, float, (float x));
670 # if !@HAVE_DECL_FLOORF@
672 _GL_FUNCDECL_SYS (floorf, float, (float x));
674 _GL_CXXALIAS_SYS (floorf, float, (float x));
676 _GL_CXXALIASWARN (floorf);
677 #elif defined GNULIB_POSIXCHECK
679 # if HAVE_RAW_DECL_FLOORF
680 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
681 "use gnulib module floorf for portability");
687 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
688 # define floor rpl_floor
690 _GL_FUNCDECL_RPL (floor, double, (double x));
691 _GL_CXXALIAS_RPL (floor, double, (double x));
693 _GL_CXXALIAS_SYS (floor, double, (double x));
695 _GL_CXXALIASWARN (floor);
699 # if @REPLACE_FLOORL@
700 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
702 # define floorl rpl_floorl
704 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
705 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
707 # if !@HAVE_DECL_FLOORL@
709 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
711 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
713 _GL_CXXALIASWARN (floorl);
714 #elif defined GNULIB_POSIXCHECK
716 # if HAVE_RAW_DECL_FLOORL
717 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
718 "use gnulib module floorl for portability");
725 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
727 # define fmaf rpl_fmaf
729 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
730 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
733 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
735 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
737 _GL_CXXALIASWARN (fmaf);
738 #elif defined GNULIB_POSIXCHECK
740 # if HAVE_RAW_DECL_FMAF
741 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
742 "use gnulib module fmaf for portability");
748 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
752 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
753 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
756 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
758 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
760 _GL_CXXALIASWARN (fma);
761 #elif defined GNULIB_POSIXCHECK
763 # if HAVE_RAW_DECL_FMA
764 _GL_WARN_ON_USE (fma, "fma is unportable - "
765 "use gnulib module fma for portability");
771 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
773 # define fmal rpl_fmal
775 _GL_FUNCDECL_RPL (fmal, long double,
776 (long double x, long double y, long double z));
777 _GL_CXXALIAS_RPL (fmal, long double,
778 (long double x, long double y, long double z));
782 _GL_FUNCDECL_SYS (fmal, long double,
783 (long double x, long double y, long double z));
785 _GL_CXXALIAS_SYS (fmal, long double,
786 (long double x, long double y, long double z));
788 _GL_CXXALIASWARN (fmal);
789 #elif defined GNULIB_POSIXCHECK
791 # if HAVE_RAW_DECL_FMAL
792 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
793 "use gnulib module fmal for portability");
800 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
802 # define fmodf rpl_fmodf
804 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
805 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
809 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
811 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
813 _GL_CXXALIASWARN (fmodf);
814 #elif defined GNULIB_POSIXCHECK
816 # if HAVE_RAW_DECL_FMODF
817 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
818 "use gnulib module fmodf for portability");
824 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
826 # define fmod rpl_fmod
828 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
829 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
831 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
833 _GL_CXXALIASWARN (fmod);
834 #elif defined GNULIB_POSIXCHECK
836 # if HAVE_RAW_DECL_FMOD
837 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
838 "use gnulib module fmod for portability");
844 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
846 # define fmodl rpl_fmodl
848 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
849 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
853 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
855 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
857 _GL_CXXALIASWARN (fmodl);
858 #elif defined GNULIB_POSIXCHECK
860 # if HAVE_RAW_DECL_FMODL
861 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
862 "use gnulib module fmodl for portability");
870 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
871 If x is zero: mantissa = x, exp = 0.
872 If x is infinite or NaN: mantissa = x, exp unspecified.
873 Store exp in *EXPPTR and return mantissa. */
875 # if @REPLACE_FREXPF@
876 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
878 # define frexpf rpl_frexpf
880 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
881 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
885 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
887 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
889 _GL_CXXALIASWARN (frexpf);
890 #elif defined GNULIB_POSIXCHECK
892 # if HAVE_RAW_DECL_FREXPF
893 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
894 "use gnulib module frexpf for portability");
901 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
902 If x is zero: mantissa = x, exp = 0.
903 If x is infinite or NaN: mantissa = x, exp unspecified.
904 Store exp in *EXPPTR and return mantissa. */
907 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
908 # define frexp rpl_frexp
910 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
911 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
913 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
915 _GL_CXXALIASWARN (frexp);
916 #elif defined GNULIB_POSIXCHECK
918 /* Assume frexp is always declared. */
919 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
920 "use gnulib module frexp for portability");
926 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
927 If x is zero: mantissa = x, exp = 0.
928 If x is infinite or NaN: mantissa = x, exp unspecified.
929 Store exp in *EXPPTR and return mantissa. */
930 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
931 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
933 # define frexpl rpl_frexpl
935 _GL_FUNCDECL_RPL (frexpl, long double,
936 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
937 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
939 # if !@HAVE_DECL_FREXPL@
940 _GL_FUNCDECL_SYS (frexpl, long double,
941 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
944 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
947 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
948 _GL_CXXALIASWARN (frexpl);
950 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
952 # if HAVE_RAW_DECL_FREXPL
953 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
954 "use gnulib module frexpl for portability");
959 /* Return sqrt(x^2+y^2). */
961 # if @REPLACE_HYPOTF@
962 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
964 # define hypotf rpl_hypotf
966 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
967 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
970 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
972 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
974 _GL_CXXALIASWARN (hypotf);
975 #elif defined GNULIB_POSIXCHECK
977 # if HAVE_RAW_DECL_HYPOTF
978 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
979 "use gnulib module hypotf for portability");
983 /* Return sqrt(x^2+y^2). */
986 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
988 # define hypot rpl_hypot
990 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
991 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
993 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
995 _GL_CXXALIASWARN (hypot);
996 #elif defined GNULIB_POSIXCHECK
998 # if HAVE_RAW_DECL_HYPOT
999 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
1000 "use gnulib module hypot for portability");
1004 /* Return sqrt(x^2+y^2). */
1006 # if @REPLACE_HYPOTL@
1007 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1009 # define hypotl rpl_hypotl
1011 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
1012 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
1015 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
1017 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
1019 _GL_CXXALIASWARN (hypotl);
1020 #elif defined GNULIB_POSIXCHECK
1022 # if HAVE_RAW_DECL_HYPOTL
1023 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
1024 "use gnulib module hypotl for portability");
1029 /* Return x * 2^exp. */
1033 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
1035 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
1036 _GL_CXXALIASWARN (ldexpf);
1037 #elif defined GNULIB_POSIXCHECK
1039 # if HAVE_RAW_DECL_LDEXPF
1040 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
1041 "use gnulib module ldexpf for portability");
1045 /* Return x * 2^exp. */
1046 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
1047 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1049 # define ldexpl rpl_ldexpl
1051 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
1052 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
1054 # if !@HAVE_DECL_LDEXPL@
1055 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
1057 # if @GNULIB_LDEXPL@
1058 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
1062 _GL_CXXALIASWARN (ldexpl);
1064 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
1066 # if HAVE_RAW_DECL_LDEXPL
1067 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
1068 "use gnulib module ldexpl for portability");
1074 # if !@HAVE_DECL_LOGB@
1075 _GL_EXTERN_C double logb (double x);
1077 #elif defined GNULIB_POSIXCHECK
1079 # if HAVE_RAW_DECL_LOGB
1080 _GL_WARN_ON_USE (logb, "logb is unportable - "
1081 "use gnulib module logb for portability");
1089 _GL_FUNCDECL_SYS (logf, float, (float x));
1091 _GL_CXXALIAS_SYS (logf, float, (float x));
1092 _GL_CXXALIASWARN (logf);
1093 #elif defined GNULIB_POSIXCHECK
1095 # if HAVE_RAW_DECL_LOGF
1096 _GL_WARN_ON_USE (logf, "logf is unportable - "
1097 "use gnulib module logf for portability");
1102 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1104 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1106 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1107 _GL_CXXALIASWARN (logl);
1108 #elif defined GNULIB_POSIXCHECK
1110 # if HAVE_RAW_DECL_LOGL
1111 _GL_WARN_ON_USE (logl, "logl is unportable - "
1112 "use gnulib module logl for portability");
1120 _GL_FUNCDECL_SYS (log10f, float, (float x));
1122 _GL_CXXALIAS_SYS (log10f, float, (float x));
1123 _GL_CXXALIASWARN (log10f);
1124 #elif defined GNULIB_POSIXCHECK
1126 # if HAVE_RAW_DECL_LOG10F
1127 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1128 "use gnulib module log10f for portability");
1133 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1135 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1137 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1138 _GL_CXXALIASWARN (log10l);
1139 #elif defined GNULIB_POSIXCHECK
1141 # if HAVE_RAW_DECL_LOG10L
1142 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1143 "use gnulib module log10l for portability");
1149 # if @REPLACE_MODFF@
1150 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1152 # define modff rpl_modff
1154 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1155 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1159 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1161 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1163 _GL_CXXALIASWARN (modff);
1164 #elif defined GNULIB_POSIXCHECK
1166 # if HAVE_RAW_DECL_MODFF
1167 _GL_WARN_ON_USE (modff, "modff is unportable - "
1168 "use gnulib module modff for portability");
1174 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1176 # define modf rpl_modf
1178 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1179 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1181 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1183 _GL_CXXALIASWARN (modf);
1184 #elif defined GNULIB_POSIXCHECK
1186 # if HAVE_RAW_DECL_MODF
1187 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1188 "use gnulib module modf for portability");
1193 # if @REPLACE_MODFL@
1194 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1196 # define modfl rpl_modfl
1198 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1199 _GL_ARG_NONNULL ((2)));
1200 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1204 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1205 _GL_ARG_NONNULL ((2)));
1207 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1209 _GL_CXXALIASWARN (modfl);
1210 #elif defined GNULIB_POSIXCHECK
1212 # if HAVE_RAW_DECL_MODFL
1213 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1214 "use gnulib module modfl for portability");
1222 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1224 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1225 _GL_CXXALIASWARN (powf);
1226 #elif defined GNULIB_POSIXCHECK
1228 # if HAVE_RAW_DECL_POWF
1229 _GL_WARN_ON_USE (powf, "powf is unportable - "
1230 "use gnulib module powf for portability");
1235 #if @GNULIB_REMAINDERF@
1236 # if @REPLACE_REMAINDERF@
1237 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1239 # define remainderf rpl_remainderf
1241 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1242 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1244 # if !@HAVE_REMAINDERF@
1245 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1247 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1249 _GL_CXXALIASWARN (remainderf);
1250 #elif defined GNULIB_POSIXCHECK
1252 # if HAVE_RAW_DECL_REMAINDERF
1253 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1254 "use gnulib module remainderf for portability");
1258 #if @GNULIB_REMAINDER@
1259 # if @REPLACE_REMAINDER@
1260 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1262 # define remainder rpl_remainder
1264 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1265 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1267 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1268 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1270 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1272 _GL_CXXALIASWARN (remainder);
1273 #elif defined GNULIB_POSIXCHECK
1275 # if HAVE_RAW_DECL_REMAINDER
1276 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1277 "use gnulib module remainder for portability");
1281 #if @GNULIB_REMAINDERL@
1282 # if @REPLACE_REMAINDERL@
1283 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1285 # define remainderl rpl_remainderl
1287 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1288 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1290 # if !@HAVE_DECL_REMAINDERL@
1291 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1293 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1295 _GL_CXXALIASWARN (remainderl);
1296 #elif defined GNULIB_POSIXCHECK
1298 # if HAVE_RAW_DECL_REMAINDERL
1299 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1300 "use gnulib module remainderl for portability");
1306 # if !@HAVE_DECL_RINTF@
1307 _GL_FUNCDECL_SYS (rintf, float, (float x));
1309 _GL_CXXALIAS_SYS (rintf, float, (float x));
1310 _GL_CXXALIASWARN (rintf);
1311 #elif defined GNULIB_POSIXCHECK
1313 # if HAVE_RAW_DECL_RINTF
1314 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1315 "use gnulib module rintf for portability");
1321 _GL_FUNCDECL_SYS (rint, double, (double x));
1323 _GL_CXXALIAS_SYS (rint, double, (double x));
1324 _GL_CXXALIASWARN (rint);
1325 #elif defined GNULIB_POSIXCHECK
1327 # if HAVE_RAW_DECL_RINT
1328 _GL_WARN_ON_USE (rint, "rint is unportable - "
1329 "use gnulib module rint for portability");
1335 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1337 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1338 _GL_CXXALIASWARN (rintl);
1339 #elif defined GNULIB_POSIXCHECK
1341 # if HAVE_RAW_DECL_RINTL
1342 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1343 "use gnulib module rintl for portability");
1349 # if @REPLACE_ROUNDF@
1350 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1352 # define roundf rpl_roundf
1354 _GL_FUNCDECL_RPL (roundf, float, (float x));
1355 _GL_CXXALIAS_RPL (roundf, float, (float x));
1357 # if !@HAVE_DECL_ROUNDF@
1358 _GL_FUNCDECL_SYS (roundf, float, (float x));
1360 _GL_CXXALIAS_SYS (roundf, float, (float x));
1362 _GL_CXXALIASWARN (roundf);
1363 #elif defined GNULIB_POSIXCHECK
1365 # if HAVE_RAW_DECL_ROUNDF
1366 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1367 "use gnulib module roundf for portability");
1372 # if @REPLACE_ROUND@
1373 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1375 # define round rpl_round
1377 _GL_FUNCDECL_RPL (round, double, (double x));
1378 _GL_CXXALIAS_RPL (round, double, (double x));
1380 # if !@HAVE_DECL_ROUND@
1381 _GL_FUNCDECL_SYS (round, double, (double x));
1383 _GL_CXXALIAS_SYS (round, double, (double x));
1385 _GL_CXXALIASWARN (round);
1386 #elif defined GNULIB_POSIXCHECK
1388 # if HAVE_RAW_DECL_ROUND
1389 _GL_WARN_ON_USE (round, "round is unportable - "
1390 "use gnulib module round for portability");
1395 # if @REPLACE_ROUNDL@
1396 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1398 # define roundl rpl_roundl
1400 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1401 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1403 # if !@HAVE_DECL_ROUNDL@
1405 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1407 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1409 _GL_CXXALIASWARN (roundl);
1410 #elif defined GNULIB_POSIXCHECK
1412 # if HAVE_RAW_DECL_ROUNDL
1413 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1414 "use gnulib module roundl for portability");
1422 _GL_FUNCDECL_SYS (sinf, float, (float x));
1424 _GL_CXXALIAS_SYS (sinf, float, (float x));
1425 _GL_CXXALIASWARN (sinf);
1426 #elif defined GNULIB_POSIXCHECK
1428 # if HAVE_RAW_DECL_SINF
1429 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1430 "use gnulib module sinf for portability");
1435 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1437 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1439 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1440 _GL_CXXALIASWARN (sinl);
1441 #elif defined GNULIB_POSIXCHECK
1443 # if HAVE_RAW_DECL_SINL
1444 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1445 "use gnulib module sinl for portability");
1453 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1455 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1456 _GL_CXXALIASWARN (sinhf);
1457 #elif defined GNULIB_POSIXCHECK
1459 # if HAVE_RAW_DECL_SINHF
1460 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1461 "use gnulib module sinhf for portability");
1469 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1471 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1472 _GL_CXXALIASWARN (sqrtf);
1473 #elif defined GNULIB_POSIXCHECK
1475 # if HAVE_RAW_DECL_SQRTF
1476 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1477 "use gnulib module sqrtf for portability");
1482 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1484 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1486 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1487 _GL_CXXALIASWARN (sqrtl);
1488 #elif defined GNULIB_POSIXCHECK
1490 # if HAVE_RAW_DECL_SQRTL
1491 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1492 "use gnulib module sqrtl for portability");
1500 _GL_FUNCDECL_SYS (tanf, float, (float x));
1502 _GL_CXXALIAS_SYS (tanf, float, (float x));
1503 _GL_CXXALIASWARN (tanf);
1504 #elif defined GNULIB_POSIXCHECK
1506 # if HAVE_RAW_DECL_TANF
1507 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1508 "use gnulib module tanf for portability");
1513 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1515 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1517 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1518 _GL_CXXALIASWARN (tanl);
1519 #elif defined GNULIB_POSIXCHECK
1521 # if HAVE_RAW_DECL_TANL
1522 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1523 "use gnulib module tanl for portability");
1531 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1533 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1534 _GL_CXXALIASWARN (tanhf);
1535 #elif defined GNULIB_POSIXCHECK
1537 # if HAVE_RAW_DECL_TANHF
1538 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1539 "use gnulib module tanhf for portability");
1545 # if @REPLACE_TRUNCF@
1546 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1547 # define truncf rpl_truncf
1549 _GL_FUNCDECL_RPL (truncf, float, (float x));
1550 _GL_CXXALIAS_RPL (truncf, float, (float x));
1552 # if !@HAVE_DECL_TRUNCF@
1553 _GL_FUNCDECL_SYS (truncf, float, (float x));
1555 _GL_CXXALIAS_SYS (truncf, float, (float x));
1557 _GL_CXXALIASWARN (truncf);
1558 #elif defined GNULIB_POSIXCHECK
1560 # if HAVE_RAW_DECL_TRUNCF
1561 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1562 "use gnulib module truncf for portability");
1567 # if @REPLACE_TRUNC@
1568 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1569 # define trunc rpl_trunc
1571 _GL_FUNCDECL_RPL (trunc, double, (double x));
1572 _GL_CXXALIAS_RPL (trunc, double, (double x));
1574 # if !@HAVE_DECL_TRUNC@
1575 _GL_FUNCDECL_SYS (trunc, double, (double x));
1577 _GL_CXXALIAS_SYS (trunc, double, (double x));
1579 _GL_CXXALIASWARN (trunc);
1580 #elif defined GNULIB_POSIXCHECK
1582 # if HAVE_RAW_DECL_TRUNC
1583 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1584 "use gnulib module trunc for portability");
1589 # if @REPLACE_TRUNCL@
1590 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1592 # define truncl rpl_truncl
1594 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1595 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1597 # if !@HAVE_DECL_TRUNCL@
1598 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1600 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1602 _GL_CXXALIASWARN (truncl);
1603 #elif defined GNULIB_POSIXCHECK
1605 # if HAVE_RAW_DECL_TRUNCL
1606 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1607 "use gnulib module truncl for portability");
1612 /* Definitions of function-like macros come here, after the function
1616 #if @GNULIB_ISFINITE@
1617 # if @REPLACE_ISFINITE@
1618 _GL_EXTERN_C int gl_isfinitef (float x);
1619 _GL_EXTERN_C int gl_isfinited (double x);
1620 _GL_EXTERN_C int gl_isfinitel (long double x);
1622 # define isfinite(x) \
1623 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1624 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1629 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1631 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1634 #elif defined GNULIB_POSIXCHECK
1635 # if defined isfinite
1636 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1638 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1644 # if @REPLACE_ISINF@
1645 _GL_EXTERN_C int gl_isinff (float x);
1646 _GL_EXTERN_C int gl_isinfd (double x);
1647 _GL_EXTERN_C int gl_isinfl (long double x);
1650 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1651 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1656 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1658 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1661 #elif defined GNULIB_POSIXCHECK
1663 _GL_WARN_REAL_FLOATING_DECL (isinf);
1665 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1671 /* Test for NaN for 'float' numbers. */
1673 /* The original <math.h> included above provides a declaration of isnan macro
1674 or (older) isnanf function. */
1676 /* GCC 4.0 and newer provides three built-ins for isnan. */
1678 # define isnanf(x) __builtin_isnanf ((float)(x))
1679 # elif defined isnan
1681 # define isnanf(x) isnan ((float)(x))
1684 /* Test whether X is a NaN. */
1686 # define isnanf rpl_isnanf
1687 _GL_EXTERN_C int isnanf (float x);
1692 /* Test for NaN for 'double' numbers.
1693 This function is a gnulib extension, unlike isnan() which applied only
1694 to 'double' numbers earlier but now is a type-generic macro. */
1696 /* The original <math.h> included above provides a declaration of isnan
1699 /* GCC 4.0 and newer provides three built-ins for isnan. */
1701 # define isnand(x) __builtin_isnan ((double)(x))
1704 # define isnand(x) isnan ((double)(x))
1707 /* Test whether X is a NaN. */
1709 # define isnand rpl_isnand
1710 _GL_EXTERN_C int isnand (double x);
1715 /* Test for NaN for 'long double' numbers. */
1717 /* The original <math.h> included above provides a declaration of isnan
1718 macro or (older) isnanl function. */
1720 /* GCC 4.0 and newer provides three built-ins for isnan. */
1722 # define isnanl(x) __builtin_isnanl ((long double)(x))
1723 # elif defined isnan
1725 # define isnanl(x) isnan ((long double)(x))
1728 /* Test whether X is a NaN. */
1730 # define isnanl rpl_isnanl
1731 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1735 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1737 # if @REPLACE_ISNAN@
1738 /* We can't just use the isnanf macro (e.g.) as exposed by
1739 isnanf.h (e.g.) here, because those may end up being macros
1740 that recursively expand back to isnan. So use the gnulib
1741 replacements for them directly. */
1742 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1743 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1745 _GL_EXTERN_C int rpl_isnanf (float x);
1746 # define gl_isnan_f(x) rpl_isnanf (x)
1748 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1749 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1751 _GL_EXTERN_C int rpl_isnand (double x);
1752 # define gl_isnan_d(x) rpl_isnand (x)
1754 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1755 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1757 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1758 # define gl_isnan_l(x) rpl_isnanl (x)
1762 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1763 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1765 # elif __GNUC__ >= 4
1768 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1769 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1770 __builtin_isnanf ((float)(x)))
1774 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1776 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1779 /* Ensure isnan is a macro. */
1781 # define isnan isnan
1784 #elif defined GNULIB_POSIXCHECK
1786 _GL_WARN_REAL_FLOATING_DECL (isnan);
1788 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1793 #if @GNULIB_SIGNBIT@
1794 # if @REPLACE_SIGNBIT_USING_GCC@
1796 /* GCC 4.0 and newer provides three built-ins for signbit. */
1797 # define signbit(x) \
1798 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1799 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1800 __builtin_signbitf (x))
1802 # if @REPLACE_SIGNBIT@
1804 _GL_EXTERN_C int gl_signbitf (float arg);
1805 _GL_EXTERN_C int gl_signbitd (double arg);
1806 _GL_EXTERN_C int gl_signbitl (long double arg);
1807 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1808 # define _GL_NUM_UINT_WORDS(type) \
1809 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1810 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1811 # define gl_signbitf_OPTIMIZED_MACRO
1812 # define gl_signbitf(arg) \
1813 ({ union { float _value; \
1814 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1816 _m._value = (arg); \
1817 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1820 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1821 # define gl_signbitd_OPTIMIZED_MACRO
1822 # define gl_signbitd(arg) \
1823 ({ union { double _value; \
1824 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1826 _m._value = (arg); \
1827 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1830 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1831 # define gl_signbitl_OPTIMIZED_MACRO
1832 # define gl_signbitl(arg) \
1833 ({ union { long double _value; \
1834 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1836 _m._value = (arg); \
1837 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1841 # define signbit(x) \
1842 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1843 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1848 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1850 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1853 #elif defined GNULIB_POSIXCHECK
1854 # if defined signbit
1855 _GL_WARN_REAL_FLOATING_DECL (signbit);
1857 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1862 #endif /* _@GUARD_PREFIX@_MATH_H */
1863 #endif /* _@GUARD_PREFIX@_MATH_H */