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");
536 # if @REPLACE_EXPM1F@
537 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
539 # define expm1f rpl_expm1f
541 _GL_FUNCDECL_RPL (expm1f, float, (float x));
542 _GL_CXXALIAS_RPL (expm1f, float, (float x));
545 _GL_FUNCDECL_SYS (expm1f, float, (float x));
547 _GL_CXXALIAS_SYS (expm1f, float, (float x));
549 _GL_CXXALIASWARN (expm1f);
550 #elif defined GNULIB_POSIXCHECK
552 # if HAVE_RAW_DECL_EXPM1F
553 _GL_WARN_ON_USE (expm1f, "expm1f is unportable - "
554 "use gnulib module expm1f for portability");
560 _GL_FUNCDECL_SYS (expm1, double, (double x));
562 _GL_CXXALIAS_SYS (expm1, double, (double x));
563 _GL_CXXALIASWARN (expm1);
564 #elif defined GNULIB_POSIXCHECK
566 # if HAVE_RAW_DECL_EXPM1
567 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
568 "use gnulib module expm1 for portability");
574 _GL_FUNCDECL_SYS (expm1l, long double, (long double x));
576 _GL_CXXALIAS_SYS (expm1l, long double, (long double x));
577 _GL_CXXALIASWARN (expm1l);
578 #elif defined GNULIB_POSIXCHECK
580 # if HAVE_RAW_DECL_EXPM1L
581 _GL_WARN_ON_USE (expm1l, "expm1l is unportable - "
582 "use gnulib module expm1l for portability");
590 _GL_FUNCDECL_SYS (fabsf, float, (float x));
592 _GL_CXXALIAS_SYS (fabsf, float, (float x));
593 _GL_CXXALIASWARN (fabsf);
594 #elif defined GNULIB_POSIXCHECK
596 # if HAVE_RAW_DECL_FABSF
597 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
598 "use gnulib module fabsf for portability");
604 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
606 # define fabsl rpl_fabsl
608 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
609 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
613 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
615 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
617 _GL_CXXALIASWARN (fabsl);
618 #elif defined GNULIB_POSIXCHECK
620 # if HAVE_RAW_DECL_FABSL
621 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
622 "use gnulib module fabsl for portability");
628 # if @REPLACE_FLOORF@
629 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
631 # define floorf rpl_floorf
633 _GL_FUNCDECL_RPL (floorf, float, (float x));
634 _GL_CXXALIAS_RPL (floorf, float, (float x));
636 # if !@HAVE_DECL_FLOORF@
638 _GL_FUNCDECL_SYS (floorf, float, (float x));
640 _GL_CXXALIAS_SYS (floorf, float, (float x));
642 _GL_CXXALIASWARN (floorf);
643 #elif defined GNULIB_POSIXCHECK
645 # if HAVE_RAW_DECL_FLOORF
646 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
647 "use gnulib module floorf for portability");
653 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
654 # define floor rpl_floor
656 _GL_FUNCDECL_RPL (floor, double, (double x));
657 _GL_CXXALIAS_RPL (floor, double, (double x));
659 _GL_CXXALIAS_SYS (floor, double, (double x));
661 _GL_CXXALIASWARN (floor);
665 # if @REPLACE_FLOORL@
666 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
668 # define floorl rpl_floorl
670 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
671 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
673 # if !@HAVE_DECL_FLOORL@
675 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
677 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
679 _GL_CXXALIASWARN (floorl);
680 #elif defined GNULIB_POSIXCHECK
682 # if HAVE_RAW_DECL_FLOORL
683 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
684 "use gnulib module floorl for portability");
691 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
693 # define fmaf rpl_fmaf
695 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
696 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
699 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
701 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
703 _GL_CXXALIASWARN (fmaf);
704 #elif defined GNULIB_POSIXCHECK
706 # if HAVE_RAW_DECL_FMAF
707 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
708 "use gnulib module fmaf for portability");
714 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
718 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
719 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
722 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
724 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
726 _GL_CXXALIASWARN (fma);
727 #elif defined GNULIB_POSIXCHECK
729 # if HAVE_RAW_DECL_FMA
730 _GL_WARN_ON_USE (fma, "fma is unportable - "
731 "use gnulib module fma for portability");
737 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
739 # define fmal rpl_fmal
741 _GL_FUNCDECL_RPL (fmal, long double,
742 (long double x, long double y, long double z));
743 _GL_CXXALIAS_RPL (fmal, long double,
744 (long double x, long double y, long double z));
747 _GL_FUNCDECL_SYS (fmal, long double,
748 (long double x, long double y, long double z));
750 _GL_CXXALIAS_SYS (fmal, long double,
751 (long double x, long double y, long double z));
753 _GL_CXXALIASWARN (fmal);
754 #elif defined GNULIB_POSIXCHECK
756 # if HAVE_RAW_DECL_FMAL
757 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
758 "use gnulib module fmal for portability");
765 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
767 # define fmodf rpl_fmodf
769 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
770 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
774 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
776 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
778 _GL_CXXALIASWARN (fmodf);
779 #elif defined GNULIB_POSIXCHECK
781 # if HAVE_RAW_DECL_FMODF
782 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
783 "use gnulib module fmodf for portability");
789 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
791 # define fmod rpl_fmod
793 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
794 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
796 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
798 _GL_CXXALIASWARN (fmod);
799 #elif defined GNULIB_POSIXCHECK
801 # if HAVE_RAW_DECL_FMOD
802 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
803 "use gnulib module fmod for portability");
809 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
811 # define fmodl rpl_fmodl
813 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
814 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
818 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
820 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
822 _GL_CXXALIASWARN (fmodl);
823 #elif defined GNULIB_POSIXCHECK
825 # if HAVE_RAW_DECL_FMODL
826 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
827 "use gnulib module fmodl for portability");
835 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
836 If x is zero: mantissa = x, exp = 0.
837 If x is infinite or NaN: mantissa = x, exp unspecified.
838 Store exp in *EXPPTR and return mantissa. */
840 # if @REPLACE_FREXPF@
841 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
843 # define frexpf rpl_frexpf
845 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
846 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
850 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
852 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
854 _GL_CXXALIASWARN (frexpf);
855 #elif defined GNULIB_POSIXCHECK
857 # if HAVE_RAW_DECL_FREXPF
858 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
859 "use gnulib module frexpf for portability");
866 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
867 If x is zero: mantissa = x, exp = 0.
868 If x is infinite or NaN: mantissa = x, exp unspecified.
869 Store exp in *EXPPTR and return mantissa. */
872 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
873 # define frexp rpl_frexp
875 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
876 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
878 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
880 _GL_CXXALIASWARN (frexp);
881 #elif defined GNULIB_POSIXCHECK
883 /* Assume frexp is always declared. */
884 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
885 "use gnulib module frexp for portability");
891 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
892 If x is zero: mantissa = x, exp = 0.
893 If x is infinite or NaN: mantissa = x, exp unspecified.
894 Store exp in *EXPPTR and return mantissa. */
895 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
896 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
898 # define frexpl rpl_frexpl
900 _GL_FUNCDECL_RPL (frexpl, long double,
901 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
902 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
904 # if !@HAVE_DECL_FREXPL@
905 _GL_FUNCDECL_SYS (frexpl, long double,
906 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
909 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
912 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
913 _GL_CXXALIASWARN (frexpl);
915 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
917 # if HAVE_RAW_DECL_FREXPL
918 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
919 "use gnulib module frexpl for portability");
924 /* Return sqrt(x^2+y^2). */
926 # if @REPLACE_HYPOTF@
927 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
929 # define hypotf rpl_hypotf
931 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
932 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
935 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
937 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
939 _GL_CXXALIASWARN (hypotf);
940 #elif defined GNULIB_POSIXCHECK
942 # if HAVE_RAW_DECL_HYPOTF
943 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
944 "use gnulib module hypotf for portability");
948 /* Return sqrt(x^2+y^2). */
951 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
953 # define hypot rpl_hypot
955 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
956 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
958 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
960 _GL_CXXALIASWARN (hypot);
961 #elif defined GNULIB_POSIXCHECK
963 # if HAVE_RAW_DECL_HYPOT
964 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
965 "use gnulib module hypot for portability");
969 /* Return sqrt(x^2+y^2). */
971 # if @REPLACE_HYPOTL@
972 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
974 # define hypotl rpl_hypotl
976 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
977 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
980 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
982 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
984 _GL_CXXALIASWARN (hypotl);
985 #elif defined GNULIB_POSIXCHECK
987 # if HAVE_RAW_DECL_HYPOTL
988 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
989 "use gnulib module hypotl for portability");
994 /* Return x * 2^exp. */
998 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
1000 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
1001 _GL_CXXALIASWARN (ldexpf);
1002 #elif defined GNULIB_POSIXCHECK
1004 # if HAVE_RAW_DECL_LDEXPF
1005 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
1006 "use gnulib module ldexpf for portability");
1010 /* Return x * 2^exp. */
1011 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
1012 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1014 # define ldexpl rpl_ldexpl
1016 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
1017 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
1019 # if !@HAVE_DECL_LDEXPL@
1020 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
1022 # if @GNULIB_LDEXPL@
1023 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
1027 _GL_CXXALIASWARN (ldexpl);
1029 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
1031 # if HAVE_RAW_DECL_LDEXPL
1032 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
1033 "use gnulib module ldexpl for portability");
1039 # if !@HAVE_DECL_LOGB@
1040 _GL_EXTERN_C double logb (double x);
1042 #elif defined GNULIB_POSIXCHECK
1044 # if HAVE_RAW_DECL_LOGB
1045 _GL_WARN_ON_USE (logb, "logb is unportable - "
1046 "use gnulib module logb for portability");
1054 _GL_FUNCDECL_SYS (logf, float, (float x));
1056 _GL_CXXALIAS_SYS (logf, float, (float x));
1057 _GL_CXXALIASWARN (logf);
1058 #elif defined GNULIB_POSIXCHECK
1060 # if HAVE_RAW_DECL_LOGF
1061 _GL_WARN_ON_USE (logf, "logf is unportable - "
1062 "use gnulib module logf for portability");
1067 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1069 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1071 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1072 _GL_CXXALIASWARN (logl);
1073 #elif defined GNULIB_POSIXCHECK
1075 # if HAVE_RAW_DECL_LOGL
1076 _GL_WARN_ON_USE (logl, "logl is unportable - "
1077 "use gnulib module logl for portability");
1085 _GL_FUNCDECL_SYS (log10f, float, (float x));
1087 _GL_CXXALIAS_SYS (log10f, float, (float x));
1088 _GL_CXXALIASWARN (log10f);
1089 #elif defined GNULIB_POSIXCHECK
1091 # if HAVE_RAW_DECL_LOG10F
1092 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1093 "use gnulib module log10f for portability");
1098 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1100 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1102 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1103 _GL_CXXALIASWARN (log10l);
1104 #elif defined GNULIB_POSIXCHECK
1106 # if HAVE_RAW_DECL_LOG10L
1107 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1108 "use gnulib module log10l for portability");
1114 # if @REPLACE_MODFF@
1115 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1117 # define modff rpl_modff
1119 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1120 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1124 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1126 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1128 _GL_CXXALIASWARN (modff);
1129 #elif defined GNULIB_POSIXCHECK
1131 # if HAVE_RAW_DECL_MODFF
1132 _GL_WARN_ON_USE (modff, "modff is unportable - "
1133 "use gnulib module modff for portability");
1139 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1141 # define modf rpl_modf
1143 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1144 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1146 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1148 _GL_CXXALIASWARN (modf);
1149 #elif defined GNULIB_POSIXCHECK
1151 # if HAVE_RAW_DECL_MODF
1152 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1153 "use gnulib module modf for portability");
1158 # if @REPLACE_MODFL@
1159 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1161 # define modfl rpl_modfl
1163 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1164 _GL_ARG_NONNULL ((2)));
1165 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1169 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1170 _GL_ARG_NONNULL ((2)));
1172 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1174 _GL_CXXALIASWARN (modfl);
1175 #elif defined GNULIB_POSIXCHECK
1177 # if HAVE_RAW_DECL_MODFL
1178 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1179 "use gnulib module modfl for portability");
1187 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1189 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1190 _GL_CXXALIASWARN (powf);
1191 #elif defined GNULIB_POSIXCHECK
1193 # if HAVE_RAW_DECL_POWF
1194 _GL_WARN_ON_USE (powf, "powf is unportable - "
1195 "use gnulib module powf for portability");
1200 #if @GNULIB_REMAINDERF@
1201 # if @REPLACE_REMAINDERF@
1202 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1204 # define remainderf rpl_remainderf
1206 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1207 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1209 # if !@HAVE_REMAINDERF@
1210 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1212 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1214 _GL_CXXALIASWARN (remainderf);
1215 #elif defined GNULIB_POSIXCHECK
1217 # if HAVE_RAW_DECL_REMAINDERF
1218 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1219 "use gnulib module remainderf for portability");
1223 #if @GNULIB_REMAINDER@
1224 # if @REPLACE_REMAINDER@
1225 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1227 # define remainder rpl_remainder
1229 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1230 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1232 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1233 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1235 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1237 _GL_CXXALIASWARN (remainder);
1238 #elif defined GNULIB_POSIXCHECK
1240 # if HAVE_RAW_DECL_REMAINDER
1241 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1242 "use gnulib module remainder for portability");
1246 #if @GNULIB_REMAINDERL@
1247 # if @REPLACE_REMAINDERL@
1248 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1250 # define remainderl rpl_remainderl
1252 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1253 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1255 # if !@HAVE_REMAINDERL@
1256 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1258 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1260 _GL_CXXALIASWARN (remainderl);
1261 #elif defined GNULIB_POSIXCHECK
1263 # if HAVE_RAW_DECL_REMAINDERL
1264 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1265 "use gnulib module remainderl for portability");
1272 _GL_FUNCDECL_SYS (rintf, float, (float x));
1274 _GL_CXXALIAS_SYS (rintf, float, (float x));
1275 _GL_CXXALIASWARN (rintf);
1276 #elif defined GNULIB_POSIXCHECK
1278 # if HAVE_RAW_DECL_RINTF
1279 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1280 "use gnulib module rintf for portability");
1286 _GL_FUNCDECL_SYS (rint, double, (double x));
1288 _GL_CXXALIAS_SYS (rint, double, (double x));
1289 _GL_CXXALIASWARN (rint);
1290 #elif defined GNULIB_POSIXCHECK
1292 # if HAVE_RAW_DECL_RINT
1293 _GL_WARN_ON_USE (rint, "rint is unportable - "
1294 "use gnulib module rint for portability");
1300 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1302 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1303 _GL_CXXALIASWARN (rintl);
1304 #elif defined GNULIB_POSIXCHECK
1306 # if HAVE_RAW_DECL_RINTL
1307 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1308 "use gnulib module rintl for portability");
1314 # if @REPLACE_ROUNDF@
1315 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1317 # define roundf rpl_roundf
1319 _GL_FUNCDECL_RPL (roundf, float, (float x));
1320 _GL_CXXALIAS_RPL (roundf, float, (float x));
1322 # if !@HAVE_DECL_ROUNDF@
1323 _GL_FUNCDECL_SYS (roundf, float, (float x));
1325 _GL_CXXALIAS_SYS (roundf, float, (float x));
1327 _GL_CXXALIASWARN (roundf);
1328 #elif defined GNULIB_POSIXCHECK
1330 # if HAVE_RAW_DECL_ROUNDF
1331 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1332 "use gnulib module roundf for portability");
1337 # if @REPLACE_ROUND@
1338 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1340 # define round rpl_round
1342 _GL_FUNCDECL_RPL (round, double, (double x));
1343 _GL_CXXALIAS_RPL (round, double, (double x));
1345 # if !@HAVE_DECL_ROUND@
1346 _GL_FUNCDECL_SYS (round, double, (double x));
1348 _GL_CXXALIAS_SYS (round, double, (double x));
1350 _GL_CXXALIASWARN (round);
1351 #elif defined GNULIB_POSIXCHECK
1353 # if HAVE_RAW_DECL_ROUND
1354 _GL_WARN_ON_USE (round, "round is unportable - "
1355 "use gnulib module round for portability");
1360 # if @REPLACE_ROUNDL@
1361 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1363 # define roundl rpl_roundl
1365 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1366 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1368 # if !@HAVE_DECL_ROUNDL@
1369 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1371 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1373 _GL_CXXALIASWARN (roundl);
1374 #elif defined GNULIB_POSIXCHECK
1376 # if HAVE_RAW_DECL_ROUNDL
1377 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1378 "use gnulib module roundl for portability");
1386 _GL_FUNCDECL_SYS (sinf, float, (float x));
1388 _GL_CXXALIAS_SYS (sinf, float, (float x));
1389 _GL_CXXALIASWARN (sinf);
1390 #elif defined GNULIB_POSIXCHECK
1392 # if HAVE_RAW_DECL_SINF
1393 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1394 "use gnulib module sinf for portability");
1399 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1401 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1403 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1404 _GL_CXXALIASWARN (sinl);
1405 #elif defined GNULIB_POSIXCHECK
1407 # if HAVE_RAW_DECL_SINL
1408 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1409 "use gnulib module sinl for portability");
1417 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1419 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1420 _GL_CXXALIASWARN (sinhf);
1421 #elif defined GNULIB_POSIXCHECK
1423 # if HAVE_RAW_DECL_SINHF
1424 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1425 "use gnulib module sinhf for portability");
1433 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1435 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1436 _GL_CXXALIASWARN (sqrtf);
1437 #elif defined GNULIB_POSIXCHECK
1439 # if HAVE_RAW_DECL_SQRTF
1440 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1441 "use gnulib module sqrtf for portability");
1446 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1448 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1450 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1451 _GL_CXXALIASWARN (sqrtl);
1452 #elif defined GNULIB_POSIXCHECK
1454 # if HAVE_RAW_DECL_SQRTL
1455 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1456 "use gnulib module sqrtl for portability");
1464 _GL_FUNCDECL_SYS (tanf, float, (float x));
1466 _GL_CXXALIAS_SYS (tanf, float, (float x));
1467 _GL_CXXALIASWARN (tanf);
1468 #elif defined GNULIB_POSIXCHECK
1470 # if HAVE_RAW_DECL_TANF
1471 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1472 "use gnulib module tanf for portability");
1477 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1479 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1481 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1482 _GL_CXXALIASWARN (tanl);
1483 #elif defined GNULIB_POSIXCHECK
1485 # if HAVE_RAW_DECL_TANL
1486 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1487 "use gnulib module tanl for portability");
1495 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1497 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1498 _GL_CXXALIASWARN (tanhf);
1499 #elif defined GNULIB_POSIXCHECK
1501 # if HAVE_RAW_DECL_TANHF
1502 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1503 "use gnulib module tanhf for portability");
1509 # if @REPLACE_TRUNCF@
1510 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1511 # define truncf rpl_truncf
1513 _GL_FUNCDECL_RPL (truncf, float, (float x));
1514 _GL_CXXALIAS_RPL (truncf, float, (float x));
1516 # if !@HAVE_DECL_TRUNCF@
1517 _GL_FUNCDECL_SYS (truncf, float, (float x));
1519 _GL_CXXALIAS_SYS (truncf, float, (float x));
1521 _GL_CXXALIASWARN (truncf);
1522 #elif defined GNULIB_POSIXCHECK
1524 # if HAVE_RAW_DECL_TRUNCF
1525 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1526 "use gnulib module truncf for portability");
1531 # if @REPLACE_TRUNC@
1532 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1533 # define trunc rpl_trunc
1535 _GL_FUNCDECL_RPL (trunc, double, (double x));
1536 _GL_CXXALIAS_RPL (trunc, double, (double x));
1538 # if !@HAVE_DECL_TRUNC@
1539 _GL_FUNCDECL_SYS (trunc, double, (double x));
1541 _GL_CXXALIAS_SYS (trunc, double, (double x));
1543 _GL_CXXALIASWARN (trunc);
1544 #elif defined GNULIB_POSIXCHECK
1546 # if HAVE_RAW_DECL_TRUNC
1547 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1548 "use gnulib module trunc for portability");
1553 # if @REPLACE_TRUNCL@
1554 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1556 # define truncl rpl_truncl
1558 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1559 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1561 # if !@HAVE_DECL_TRUNCL@
1562 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1564 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1566 _GL_CXXALIASWARN (truncl);
1567 #elif defined GNULIB_POSIXCHECK
1569 # if HAVE_RAW_DECL_TRUNCL
1570 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1571 "use gnulib module truncl for portability");
1576 /* Definitions of function-like macros come here, after the function
1580 #if @GNULIB_ISFINITE@
1581 # if @REPLACE_ISFINITE@
1582 _GL_EXTERN_C int gl_isfinitef (float x);
1583 _GL_EXTERN_C int gl_isfinited (double x);
1584 _GL_EXTERN_C int gl_isfinitel (long double x);
1586 # define isfinite(x) \
1587 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1588 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1593 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1595 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1598 #elif defined GNULIB_POSIXCHECK
1599 # if defined isfinite
1600 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1602 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1608 # if @REPLACE_ISINF@
1609 _GL_EXTERN_C int gl_isinff (float x);
1610 _GL_EXTERN_C int gl_isinfd (double x);
1611 _GL_EXTERN_C int gl_isinfl (long double x);
1614 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1615 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1620 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1622 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1625 #elif defined GNULIB_POSIXCHECK
1627 _GL_WARN_REAL_FLOATING_DECL (isinf);
1629 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1635 /* Test for NaN for 'float' numbers. */
1637 /* The original <math.h> included above provides a declaration of isnan macro
1638 or (older) isnanf function. */
1640 /* GCC 4.0 and newer provides three built-ins for isnan. */
1642 # define isnanf(x) __builtin_isnanf ((float)(x))
1643 # elif defined isnan
1645 # define isnanf(x) isnan ((float)(x))
1648 /* Test whether X is a NaN. */
1650 # define isnanf rpl_isnanf
1651 _GL_EXTERN_C int isnanf (float x);
1656 /* Test for NaN for 'double' numbers.
1657 This function is a gnulib extension, unlike isnan() which applied only
1658 to 'double' numbers earlier but now is a type-generic macro. */
1660 /* The original <math.h> included above provides a declaration of isnan
1663 /* GCC 4.0 and newer provides three built-ins for isnan. */
1665 # define isnand(x) __builtin_isnan ((double)(x))
1668 # define isnand(x) isnan ((double)(x))
1671 /* Test whether X is a NaN. */
1673 # define isnand rpl_isnand
1674 _GL_EXTERN_C int isnand (double x);
1679 /* Test for NaN for 'long double' numbers. */
1681 /* The original <math.h> included above provides a declaration of isnan
1682 macro or (older) isnanl function. */
1684 /* GCC 4.0 and newer provides three built-ins for isnan. */
1686 # define isnanl(x) __builtin_isnanl ((long double)(x))
1687 # elif defined isnan
1689 # define isnanl(x) isnan ((long double)(x))
1692 /* Test whether X is a NaN. */
1694 # define isnanl rpl_isnanl
1695 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1699 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1701 # if @REPLACE_ISNAN@
1702 /* We can't just use the isnanf macro (e.g.) as exposed by
1703 isnanf.h (e.g.) here, because those may end up being macros
1704 that recursively expand back to isnan. So use the gnulib
1705 replacements for them directly. */
1706 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1707 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1709 _GL_EXTERN_C int rpl_isnanf (float x);
1710 # define gl_isnan_f(x) rpl_isnanf (x)
1712 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1713 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1715 _GL_EXTERN_C int rpl_isnand (double x);
1716 # define gl_isnan_d(x) rpl_isnand (x)
1718 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1719 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1721 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1722 # define gl_isnan_l(x) rpl_isnanl (x)
1726 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1727 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1729 # elif __GNUC__ >= 4
1732 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1733 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1734 __builtin_isnanf ((float)(x)))
1738 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1740 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1743 /* Ensure isnan is a macro. */
1745 # define isnan isnan
1748 #elif defined GNULIB_POSIXCHECK
1750 _GL_WARN_REAL_FLOATING_DECL (isnan);
1752 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1757 #if @GNULIB_SIGNBIT@
1758 # if @REPLACE_SIGNBIT_USING_GCC@
1760 /* GCC 4.0 and newer provides three built-ins for signbit. */
1761 # define signbit(x) \
1762 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1763 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1764 __builtin_signbitf (x))
1766 # if @REPLACE_SIGNBIT@
1768 _GL_EXTERN_C int gl_signbitf (float arg);
1769 _GL_EXTERN_C int gl_signbitd (double arg);
1770 _GL_EXTERN_C int gl_signbitl (long double arg);
1771 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1772 # define _GL_NUM_UINT_WORDS(type) \
1773 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1774 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1775 # define gl_signbitf_OPTIMIZED_MACRO
1776 # define gl_signbitf(arg) \
1777 ({ union { float _value; \
1778 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1780 _m._value = (arg); \
1781 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1784 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1785 # define gl_signbitd_OPTIMIZED_MACRO
1786 # define gl_signbitd(arg) \
1787 ({ union { double _value; \
1788 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1790 _m._value = (arg); \
1791 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1794 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1795 # define gl_signbitl_OPTIMIZED_MACRO
1796 # define gl_signbitl(arg) \
1797 ({ union { long double _value; \
1798 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1800 _m._value = (arg); \
1801 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1805 # define signbit(x) \
1806 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1807 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1812 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1814 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1817 #elif defined GNULIB_POSIXCHECK
1818 # if defined signbit
1819 _GL_WARN_REAL_FLOATING_DECL (signbit);
1821 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1826 #endif /* _@GUARD_PREFIX@_MATH_H */
1827 #endif /* _@GUARD_PREFIX@_MATH_H */