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");
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 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
562 # define expm1 rpl_expm1
564 _GL_FUNCDECL_RPL (expm1, double, (double x));
565 _GL_CXXALIAS_RPL (expm1, double, (double x));
568 _GL_FUNCDECL_SYS (expm1, double, (double x));
570 _GL_CXXALIAS_SYS (expm1, double, (double x));
572 _GL_CXXALIASWARN (expm1);
573 #elif defined GNULIB_POSIXCHECK
575 # if HAVE_RAW_DECL_EXPM1
576 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
577 "use gnulib module expm1 for portability");
583 _GL_FUNCDECL_SYS (expm1l, long double, (long double x));
585 _GL_CXXALIAS_SYS (expm1l, long double, (long double x));
586 _GL_CXXALIASWARN (expm1l);
587 #elif defined GNULIB_POSIXCHECK
589 # if HAVE_RAW_DECL_EXPM1L
590 _GL_WARN_ON_USE (expm1l, "expm1l is unportable - "
591 "use gnulib module expm1l for portability");
599 _GL_FUNCDECL_SYS (fabsf, float, (float x));
601 _GL_CXXALIAS_SYS (fabsf, float, (float x));
602 _GL_CXXALIASWARN (fabsf);
603 #elif defined GNULIB_POSIXCHECK
605 # if HAVE_RAW_DECL_FABSF
606 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
607 "use gnulib module fabsf for portability");
613 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
615 # define fabsl rpl_fabsl
617 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
618 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
622 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
624 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
626 _GL_CXXALIASWARN (fabsl);
627 #elif defined GNULIB_POSIXCHECK
629 # if HAVE_RAW_DECL_FABSL
630 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
631 "use gnulib module fabsl for portability");
637 # if @REPLACE_FLOORF@
638 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
640 # define floorf rpl_floorf
642 _GL_FUNCDECL_RPL (floorf, float, (float x));
643 _GL_CXXALIAS_RPL (floorf, float, (float x));
645 # if !@HAVE_DECL_FLOORF@
647 _GL_FUNCDECL_SYS (floorf, float, (float x));
649 _GL_CXXALIAS_SYS (floorf, float, (float x));
651 _GL_CXXALIASWARN (floorf);
652 #elif defined GNULIB_POSIXCHECK
654 # if HAVE_RAW_DECL_FLOORF
655 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
656 "use gnulib module floorf for portability");
662 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
663 # define floor rpl_floor
665 _GL_FUNCDECL_RPL (floor, double, (double x));
666 _GL_CXXALIAS_RPL (floor, double, (double x));
668 _GL_CXXALIAS_SYS (floor, double, (double x));
670 _GL_CXXALIASWARN (floor);
674 # if @REPLACE_FLOORL@
675 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
677 # define floorl rpl_floorl
679 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
680 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
682 # if !@HAVE_DECL_FLOORL@
684 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
686 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
688 _GL_CXXALIASWARN (floorl);
689 #elif defined GNULIB_POSIXCHECK
691 # if HAVE_RAW_DECL_FLOORL
692 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
693 "use gnulib module floorl for portability");
700 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
702 # define fmaf rpl_fmaf
704 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
705 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
708 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
710 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
712 _GL_CXXALIASWARN (fmaf);
713 #elif defined GNULIB_POSIXCHECK
715 # if HAVE_RAW_DECL_FMAF
716 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
717 "use gnulib module fmaf for portability");
723 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
727 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
728 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
731 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
733 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
735 _GL_CXXALIASWARN (fma);
736 #elif defined GNULIB_POSIXCHECK
738 # if HAVE_RAW_DECL_FMA
739 _GL_WARN_ON_USE (fma, "fma is unportable - "
740 "use gnulib module fma for portability");
746 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
748 # define fmal rpl_fmal
750 _GL_FUNCDECL_RPL (fmal, long double,
751 (long double x, long double y, long double z));
752 _GL_CXXALIAS_RPL (fmal, long double,
753 (long double x, long double y, long double z));
756 _GL_FUNCDECL_SYS (fmal, long double,
757 (long double x, long double y, long double z));
759 _GL_CXXALIAS_SYS (fmal, long double,
760 (long double x, long double y, long double z));
762 _GL_CXXALIASWARN (fmal);
763 #elif defined GNULIB_POSIXCHECK
765 # if HAVE_RAW_DECL_FMAL
766 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
767 "use gnulib module fmal for portability");
774 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
776 # define fmodf rpl_fmodf
778 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
779 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
783 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
785 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
787 _GL_CXXALIASWARN (fmodf);
788 #elif defined GNULIB_POSIXCHECK
790 # if HAVE_RAW_DECL_FMODF
791 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
792 "use gnulib module fmodf for portability");
798 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
800 # define fmod rpl_fmod
802 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
803 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
805 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
807 _GL_CXXALIASWARN (fmod);
808 #elif defined GNULIB_POSIXCHECK
810 # if HAVE_RAW_DECL_FMOD
811 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
812 "use gnulib module fmod for portability");
818 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
820 # define fmodl rpl_fmodl
822 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
823 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
827 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
829 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
831 _GL_CXXALIASWARN (fmodl);
832 #elif defined GNULIB_POSIXCHECK
834 # if HAVE_RAW_DECL_FMODL
835 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
836 "use gnulib module fmodl for portability");
844 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
845 If x is zero: mantissa = x, exp = 0.
846 If x is infinite or NaN: mantissa = x, exp unspecified.
847 Store exp in *EXPPTR and return mantissa. */
849 # if @REPLACE_FREXPF@
850 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
852 # define frexpf rpl_frexpf
854 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
855 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
859 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
861 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
863 _GL_CXXALIASWARN (frexpf);
864 #elif defined GNULIB_POSIXCHECK
866 # if HAVE_RAW_DECL_FREXPF
867 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
868 "use gnulib module frexpf for portability");
875 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
876 If x is zero: mantissa = x, exp = 0.
877 If x is infinite or NaN: mantissa = x, exp unspecified.
878 Store exp in *EXPPTR and return mantissa. */
881 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
882 # define frexp rpl_frexp
884 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
885 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
887 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
889 _GL_CXXALIASWARN (frexp);
890 #elif defined GNULIB_POSIXCHECK
892 /* Assume frexp is always declared. */
893 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
894 "use gnulib module frexp for portability");
900 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
901 If x is zero: mantissa = x, exp = 0.
902 If x is infinite or NaN: mantissa = x, exp unspecified.
903 Store exp in *EXPPTR and return mantissa. */
904 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
905 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
907 # define frexpl rpl_frexpl
909 _GL_FUNCDECL_RPL (frexpl, long double,
910 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
911 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
913 # if !@HAVE_DECL_FREXPL@
914 _GL_FUNCDECL_SYS (frexpl, long double,
915 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
918 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
921 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
922 _GL_CXXALIASWARN (frexpl);
924 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
926 # if HAVE_RAW_DECL_FREXPL
927 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
928 "use gnulib module frexpl for portability");
933 /* Return sqrt(x^2+y^2). */
935 # if @REPLACE_HYPOTF@
936 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
938 # define hypotf rpl_hypotf
940 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
941 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
944 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
946 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
948 _GL_CXXALIASWARN (hypotf);
949 #elif defined GNULIB_POSIXCHECK
951 # if HAVE_RAW_DECL_HYPOTF
952 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
953 "use gnulib module hypotf for portability");
957 /* Return sqrt(x^2+y^2). */
960 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
962 # define hypot rpl_hypot
964 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
965 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
967 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
969 _GL_CXXALIASWARN (hypot);
970 #elif defined GNULIB_POSIXCHECK
972 # if HAVE_RAW_DECL_HYPOT
973 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
974 "use gnulib module hypot for portability");
978 /* Return sqrt(x^2+y^2). */
980 # if @REPLACE_HYPOTL@
981 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
983 # define hypotl rpl_hypotl
985 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
986 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
989 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
991 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
993 _GL_CXXALIASWARN (hypotl);
994 #elif defined GNULIB_POSIXCHECK
996 # if HAVE_RAW_DECL_HYPOTL
997 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
998 "use gnulib module hypotl for portability");
1003 /* Return x * 2^exp. */
1007 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
1009 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
1010 _GL_CXXALIASWARN (ldexpf);
1011 #elif defined GNULIB_POSIXCHECK
1013 # if HAVE_RAW_DECL_LDEXPF
1014 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
1015 "use gnulib module ldexpf for portability");
1019 /* Return x * 2^exp. */
1020 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
1021 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1023 # define ldexpl rpl_ldexpl
1025 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
1026 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
1028 # if !@HAVE_DECL_LDEXPL@
1029 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
1031 # if @GNULIB_LDEXPL@
1032 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
1036 _GL_CXXALIASWARN (ldexpl);
1038 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
1040 # if HAVE_RAW_DECL_LDEXPL
1041 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
1042 "use gnulib module ldexpl for portability");
1048 # if !@HAVE_DECL_LOGB@
1049 _GL_EXTERN_C double logb (double x);
1051 #elif defined GNULIB_POSIXCHECK
1053 # if HAVE_RAW_DECL_LOGB
1054 _GL_WARN_ON_USE (logb, "logb is unportable - "
1055 "use gnulib module logb for portability");
1063 _GL_FUNCDECL_SYS (logf, float, (float x));
1065 _GL_CXXALIAS_SYS (logf, float, (float x));
1066 _GL_CXXALIASWARN (logf);
1067 #elif defined GNULIB_POSIXCHECK
1069 # if HAVE_RAW_DECL_LOGF
1070 _GL_WARN_ON_USE (logf, "logf is unportable - "
1071 "use gnulib module logf for portability");
1076 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1078 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1080 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1081 _GL_CXXALIASWARN (logl);
1082 #elif defined GNULIB_POSIXCHECK
1084 # if HAVE_RAW_DECL_LOGL
1085 _GL_WARN_ON_USE (logl, "logl is unportable - "
1086 "use gnulib module logl for portability");
1094 _GL_FUNCDECL_SYS (log10f, float, (float x));
1096 _GL_CXXALIAS_SYS (log10f, float, (float x));
1097 _GL_CXXALIASWARN (log10f);
1098 #elif defined GNULIB_POSIXCHECK
1100 # if HAVE_RAW_DECL_LOG10F
1101 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1102 "use gnulib module log10f for portability");
1107 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1109 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1111 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1112 _GL_CXXALIASWARN (log10l);
1113 #elif defined GNULIB_POSIXCHECK
1115 # if HAVE_RAW_DECL_LOG10L
1116 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1117 "use gnulib module log10l for portability");
1123 # if @REPLACE_MODFF@
1124 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1126 # define modff rpl_modff
1128 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1129 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1133 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1135 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1137 _GL_CXXALIASWARN (modff);
1138 #elif defined GNULIB_POSIXCHECK
1140 # if HAVE_RAW_DECL_MODFF
1141 _GL_WARN_ON_USE (modff, "modff is unportable - "
1142 "use gnulib module modff for portability");
1148 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1150 # define modf rpl_modf
1152 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1153 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1155 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1157 _GL_CXXALIASWARN (modf);
1158 #elif defined GNULIB_POSIXCHECK
1160 # if HAVE_RAW_DECL_MODF
1161 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1162 "use gnulib module modf for portability");
1167 # if @REPLACE_MODFL@
1168 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1170 # define modfl rpl_modfl
1172 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1173 _GL_ARG_NONNULL ((2)));
1174 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1178 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1179 _GL_ARG_NONNULL ((2)));
1181 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1183 _GL_CXXALIASWARN (modfl);
1184 #elif defined GNULIB_POSIXCHECK
1186 # if HAVE_RAW_DECL_MODFL
1187 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1188 "use gnulib module modfl for portability");
1196 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1198 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1199 _GL_CXXALIASWARN (powf);
1200 #elif defined GNULIB_POSIXCHECK
1202 # if HAVE_RAW_DECL_POWF
1203 _GL_WARN_ON_USE (powf, "powf is unportable - "
1204 "use gnulib module powf for portability");
1209 #if @GNULIB_REMAINDERF@
1210 # if @REPLACE_REMAINDERF@
1211 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1213 # define remainderf rpl_remainderf
1215 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1216 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1218 # if !@HAVE_REMAINDERF@
1219 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1221 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1223 _GL_CXXALIASWARN (remainderf);
1224 #elif defined GNULIB_POSIXCHECK
1226 # if HAVE_RAW_DECL_REMAINDERF
1227 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1228 "use gnulib module remainderf for portability");
1232 #if @GNULIB_REMAINDER@
1233 # if @REPLACE_REMAINDER@
1234 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1236 # define remainder rpl_remainder
1238 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1239 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1241 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1242 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1244 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1246 _GL_CXXALIASWARN (remainder);
1247 #elif defined GNULIB_POSIXCHECK
1249 # if HAVE_RAW_DECL_REMAINDER
1250 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1251 "use gnulib module remainder for portability");
1255 #if @GNULIB_REMAINDERL@
1256 # if @REPLACE_REMAINDERL@
1257 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1259 # define remainderl rpl_remainderl
1261 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1262 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1264 # if !@HAVE_REMAINDERL@
1265 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1267 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1269 _GL_CXXALIASWARN (remainderl);
1270 #elif defined GNULIB_POSIXCHECK
1272 # if HAVE_RAW_DECL_REMAINDERL
1273 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1274 "use gnulib module remainderl for portability");
1281 _GL_FUNCDECL_SYS (rintf, float, (float x));
1283 _GL_CXXALIAS_SYS (rintf, float, (float x));
1284 _GL_CXXALIASWARN (rintf);
1285 #elif defined GNULIB_POSIXCHECK
1287 # if HAVE_RAW_DECL_RINTF
1288 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1289 "use gnulib module rintf for portability");
1295 _GL_FUNCDECL_SYS (rint, double, (double x));
1297 _GL_CXXALIAS_SYS (rint, double, (double x));
1298 _GL_CXXALIASWARN (rint);
1299 #elif defined GNULIB_POSIXCHECK
1301 # if HAVE_RAW_DECL_RINT
1302 _GL_WARN_ON_USE (rint, "rint is unportable - "
1303 "use gnulib module rint for portability");
1309 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1311 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1312 _GL_CXXALIASWARN (rintl);
1313 #elif defined GNULIB_POSIXCHECK
1315 # if HAVE_RAW_DECL_RINTL
1316 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1317 "use gnulib module rintl for portability");
1323 # if @REPLACE_ROUNDF@
1324 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1326 # define roundf rpl_roundf
1328 _GL_FUNCDECL_RPL (roundf, float, (float x));
1329 _GL_CXXALIAS_RPL (roundf, float, (float x));
1331 # if !@HAVE_DECL_ROUNDF@
1332 _GL_FUNCDECL_SYS (roundf, float, (float x));
1334 _GL_CXXALIAS_SYS (roundf, float, (float x));
1336 _GL_CXXALIASWARN (roundf);
1337 #elif defined GNULIB_POSIXCHECK
1339 # if HAVE_RAW_DECL_ROUNDF
1340 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1341 "use gnulib module roundf for portability");
1346 # if @REPLACE_ROUND@
1347 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1349 # define round rpl_round
1351 _GL_FUNCDECL_RPL (round, double, (double x));
1352 _GL_CXXALIAS_RPL (round, double, (double x));
1354 # if !@HAVE_DECL_ROUND@
1355 _GL_FUNCDECL_SYS (round, double, (double x));
1357 _GL_CXXALIAS_SYS (round, double, (double x));
1359 _GL_CXXALIASWARN (round);
1360 #elif defined GNULIB_POSIXCHECK
1362 # if HAVE_RAW_DECL_ROUND
1363 _GL_WARN_ON_USE (round, "round is unportable - "
1364 "use gnulib module round for portability");
1369 # if @REPLACE_ROUNDL@
1370 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1372 # define roundl rpl_roundl
1374 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1375 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1377 # if !@HAVE_DECL_ROUNDL@
1378 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1380 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1382 _GL_CXXALIASWARN (roundl);
1383 #elif defined GNULIB_POSIXCHECK
1385 # if HAVE_RAW_DECL_ROUNDL
1386 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1387 "use gnulib module roundl for portability");
1395 _GL_FUNCDECL_SYS (sinf, float, (float x));
1397 _GL_CXXALIAS_SYS (sinf, float, (float x));
1398 _GL_CXXALIASWARN (sinf);
1399 #elif defined GNULIB_POSIXCHECK
1401 # if HAVE_RAW_DECL_SINF
1402 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1403 "use gnulib module sinf for portability");
1408 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1410 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1412 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1413 _GL_CXXALIASWARN (sinl);
1414 #elif defined GNULIB_POSIXCHECK
1416 # if HAVE_RAW_DECL_SINL
1417 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1418 "use gnulib module sinl for portability");
1426 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1428 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1429 _GL_CXXALIASWARN (sinhf);
1430 #elif defined GNULIB_POSIXCHECK
1432 # if HAVE_RAW_DECL_SINHF
1433 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1434 "use gnulib module sinhf for portability");
1442 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1444 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1445 _GL_CXXALIASWARN (sqrtf);
1446 #elif defined GNULIB_POSIXCHECK
1448 # if HAVE_RAW_DECL_SQRTF
1449 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1450 "use gnulib module sqrtf for portability");
1455 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1457 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1459 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1460 _GL_CXXALIASWARN (sqrtl);
1461 #elif defined GNULIB_POSIXCHECK
1463 # if HAVE_RAW_DECL_SQRTL
1464 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1465 "use gnulib module sqrtl for portability");
1473 _GL_FUNCDECL_SYS (tanf, float, (float x));
1475 _GL_CXXALIAS_SYS (tanf, float, (float x));
1476 _GL_CXXALIASWARN (tanf);
1477 #elif defined GNULIB_POSIXCHECK
1479 # if HAVE_RAW_DECL_TANF
1480 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1481 "use gnulib module tanf for portability");
1486 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1488 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1490 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1491 _GL_CXXALIASWARN (tanl);
1492 #elif defined GNULIB_POSIXCHECK
1494 # if HAVE_RAW_DECL_TANL
1495 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1496 "use gnulib module tanl for portability");
1504 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1506 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1507 _GL_CXXALIASWARN (tanhf);
1508 #elif defined GNULIB_POSIXCHECK
1510 # if HAVE_RAW_DECL_TANHF
1511 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1512 "use gnulib module tanhf for portability");
1518 # if @REPLACE_TRUNCF@
1519 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1520 # define truncf rpl_truncf
1522 _GL_FUNCDECL_RPL (truncf, float, (float x));
1523 _GL_CXXALIAS_RPL (truncf, float, (float x));
1525 # if !@HAVE_DECL_TRUNCF@
1526 _GL_FUNCDECL_SYS (truncf, float, (float x));
1528 _GL_CXXALIAS_SYS (truncf, float, (float x));
1530 _GL_CXXALIASWARN (truncf);
1531 #elif defined GNULIB_POSIXCHECK
1533 # if HAVE_RAW_DECL_TRUNCF
1534 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1535 "use gnulib module truncf for portability");
1540 # if @REPLACE_TRUNC@
1541 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1542 # define trunc rpl_trunc
1544 _GL_FUNCDECL_RPL (trunc, double, (double x));
1545 _GL_CXXALIAS_RPL (trunc, double, (double x));
1547 # if !@HAVE_DECL_TRUNC@
1548 _GL_FUNCDECL_SYS (trunc, double, (double x));
1550 _GL_CXXALIAS_SYS (trunc, double, (double x));
1552 _GL_CXXALIASWARN (trunc);
1553 #elif defined GNULIB_POSIXCHECK
1555 # if HAVE_RAW_DECL_TRUNC
1556 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1557 "use gnulib module trunc for portability");
1562 # if @REPLACE_TRUNCL@
1563 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1565 # define truncl rpl_truncl
1567 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1568 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1570 # if !@HAVE_DECL_TRUNCL@
1571 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1573 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1575 _GL_CXXALIASWARN (truncl);
1576 #elif defined GNULIB_POSIXCHECK
1578 # if HAVE_RAW_DECL_TRUNCL
1579 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1580 "use gnulib module truncl for portability");
1585 /* Definitions of function-like macros come here, after the function
1589 #if @GNULIB_ISFINITE@
1590 # if @REPLACE_ISFINITE@
1591 _GL_EXTERN_C int gl_isfinitef (float x);
1592 _GL_EXTERN_C int gl_isfinited (double x);
1593 _GL_EXTERN_C int gl_isfinitel (long double x);
1595 # define isfinite(x) \
1596 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1597 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1602 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1604 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1607 #elif defined GNULIB_POSIXCHECK
1608 # if defined isfinite
1609 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1611 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1617 # if @REPLACE_ISINF@
1618 _GL_EXTERN_C int gl_isinff (float x);
1619 _GL_EXTERN_C int gl_isinfd (double x);
1620 _GL_EXTERN_C int gl_isinfl (long double x);
1623 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1624 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1629 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1631 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1634 #elif defined GNULIB_POSIXCHECK
1636 _GL_WARN_REAL_FLOATING_DECL (isinf);
1638 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1644 /* Test for NaN for 'float' numbers. */
1646 /* The original <math.h> included above provides a declaration of isnan macro
1647 or (older) isnanf function. */
1649 /* GCC 4.0 and newer provides three built-ins for isnan. */
1651 # define isnanf(x) __builtin_isnanf ((float)(x))
1652 # elif defined isnan
1654 # define isnanf(x) isnan ((float)(x))
1657 /* Test whether X is a NaN. */
1659 # define isnanf rpl_isnanf
1660 _GL_EXTERN_C int isnanf (float x);
1665 /* Test for NaN for 'double' numbers.
1666 This function is a gnulib extension, unlike isnan() which applied only
1667 to 'double' numbers earlier but now is a type-generic macro. */
1669 /* The original <math.h> included above provides a declaration of isnan
1672 /* GCC 4.0 and newer provides three built-ins for isnan. */
1674 # define isnand(x) __builtin_isnan ((double)(x))
1677 # define isnand(x) isnan ((double)(x))
1680 /* Test whether X is a NaN. */
1682 # define isnand rpl_isnand
1683 _GL_EXTERN_C int isnand (double x);
1688 /* Test for NaN for 'long double' numbers. */
1690 /* The original <math.h> included above provides a declaration of isnan
1691 macro or (older) isnanl function. */
1693 /* GCC 4.0 and newer provides three built-ins for isnan. */
1695 # define isnanl(x) __builtin_isnanl ((long double)(x))
1696 # elif defined isnan
1698 # define isnanl(x) isnan ((long double)(x))
1701 /* Test whether X is a NaN. */
1703 # define isnanl rpl_isnanl
1704 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1708 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1710 # if @REPLACE_ISNAN@
1711 /* We can't just use the isnanf macro (e.g.) as exposed by
1712 isnanf.h (e.g.) here, because those may end up being macros
1713 that recursively expand back to isnan. So use the gnulib
1714 replacements for them directly. */
1715 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1716 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1718 _GL_EXTERN_C int rpl_isnanf (float x);
1719 # define gl_isnan_f(x) rpl_isnanf (x)
1721 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1722 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1724 _GL_EXTERN_C int rpl_isnand (double x);
1725 # define gl_isnan_d(x) rpl_isnand (x)
1727 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1728 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1730 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1731 # define gl_isnan_l(x) rpl_isnanl (x)
1735 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1736 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1738 # elif __GNUC__ >= 4
1741 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1742 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1743 __builtin_isnanf ((float)(x)))
1747 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1749 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1752 /* Ensure isnan is a macro. */
1754 # define isnan isnan
1757 #elif defined GNULIB_POSIXCHECK
1759 _GL_WARN_REAL_FLOATING_DECL (isnan);
1761 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1766 #if @GNULIB_SIGNBIT@
1767 # if @REPLACE_SIGNBIT_USING_GCC@
1769 /* GCC 4.0 and newer provides three built-ins for signbit. */
1770 # define signbit(x) \
1771 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1772 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1773 __builtin_signbitf (x))
1775 # if @REPLACE_SIGNBIT@
1777 _GL_EXTERN_C int gl_signbitf (float arg);
1778 _GL_EXTERN_C int gl_signbitd (double arg);
1779 _GL_EXTERN_C int gl_signbitl (long double arg);
1780 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1781 # define _GL_NUM_UINT_WORDS(type) \
1782 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1783 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1784 # define gl_signbitf_OPTIMIZED_MACRO
1785 # define gl_signbitf(arg) \
1786 ({ union { float _value; \
1787 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1789 _m._value = (arg); \
1790 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1793 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1794 # define gl_signbitd_OPTIMIZED_MACRO
1795 # define gl_signbitd(arg) \
1796 ({ union { double _value; \
1797 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1799 _m._value = (arg); \
1800 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1803 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1804 # define gl_signbitl_OPTIMIZED_MACRO
1805 # define gl_signbitl(arg) \
1806 ({ union { long double _value; \
1807 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1809 _m._value = (arg); \
1810 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1814 # define signbit(x) \
1815 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1816 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1821 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1823 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1826 #elif defined GNULIB_POSIXCHECK
1827 # if defined signbit
1828 _GL_WARN_REAL_FLOATING_DECL (signbit);
1830 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1835 #endif /* _@GUARD_PREFIX@_MATH_H */
1836 #endif /* _@GUARD_PREFIX@_MATH_H */