1 /* A GNU-like <math.h>.
3 Copyright (C) 2002-2003, 2007-2012 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #ifndef _@GUARD_PREFIX@_MATH_H
21 @PRAGMA_SYSTEM_HEADER@
25 /* The include_next requires a split double-inclusion guard. */
26 #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_MATH_H@
28 #ifndef _@GUARD_PREFIX@_MATH_H
29 #define _@GUARD_PREFIX@_MATH_H
32 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
34 /* The definition of _GL_ARG_NONNULL is copied here. */
36 /* The definition of _GL_WARN_ON_USE is copied here. */
39 /* Helper macros to define type-generic function FUNC as overloaded functions,
40 rather than as macros like in C. POSIX declares these with an argument of
41 real-floating (that is, one of float, double, or long double). */
42 # define _GL_MATH_CXX_REAL_FLOATING_DECL_1(func) \
44 _gl_cxx_ ## func ## f (float f) \
49 _gl_cxx_ ## func ## d (double d) \
54 _gl_cxx_ ## func ## l (long double l) \
58 # define _GL_MATH_CXX_REAL_FLOATING_DECL_2(func) \
62 return _gl_cxx_ ## func ## f (f); \
67 return _gl_cxx_ ## func ## d (d); \
70 func (long double l) \
72 return _gl_cxx_ ## func ## l (l); \
76 /* Helper macros to define a portability warning for the
77 classification macro FUNC called with VALUE. POSIX declares the
78 classification macros with an argument of real-floating (that is,
79 one of float, double, or long double). */
80 #define _GL_WARN_REAL_FLOATING_DECL(func) \
82 rpl_ ## func ## f (float f) \
87 rpl_ ## func ## d (double d) \
92 rpl_ ## func ## l (long double l) \
96 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \
97 "use gnulib module " #func " for portability"); \
98 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \
99 "use gnulib module " #func " for portability"); \
100 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \
101 "use gnulib module " #func " for portability")
102 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
103 (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \
104 : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \
105 : rpl_ ## func ## l (value))
109 /* Pull in a function that fixes the 'int' to 'long double' conversion
111 _GL_EXTERN_C void _Qp_itoq (long double *, int);
112 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
116 /* POSIX allows platforms that don't support NAN. But all major
117 machines in the past 15 years have supported something close to
118 IEEE NaN, so we define this unconditionally. We also must define
119 it on platforms like Solaris 10, where NAN is present but defined
120 as a function pointer rather than a floating point constant. */
121 #if !defined NAN || @REPLACE_NAN@
122 # if !GNULIB_defined_NAN
124 /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
125 choke on the expression 0.0 / 0.0. */
126 # if defined __DECC || defined _MSC_VER
130 static float zero = 0.0f;
133 # define NAN (_NaN())
135 # define NAN (0.0f / 0.0f)
137 # define GNULIB_defined_NAN 1
141 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
142 than a floating point constant. */
143 #if @REPLACE_HUGE_VAL@
145 # define HUGE_VALF (1.0f / 0.0f)
147 # define HUGE_VAL (1.0 / 0.0)
149 # define HUGE_VALL (1.0L / 0.0L)
152 /* HUGE_VALF is a 'float' Infinity. */
154 # if defined _MSC_VER
155 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f. */
156 # define HUGE_VALF (1e25f * 1e25f)
158 # define HUGE_VALF (1.0f / 0.0f)
162 /* HUGE_VAL is a 'double' Infinity. */
164 # if defined _MSC_VER
165 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
166 # define HUGE_VAL (1e250 * 1e250)
168 # define HUGE_VAL (1.0 / 0.0)
172 /* HUGE_VALL is a 'long double' Infinity. */
174 # if defined _MSC_VER
175 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. */
176 # define HUGE_VALL (1e250L * 1e250L)
178 # define HUGE_VALL (1.0L / 0.0L)
185 _GL_FUNCDECL_SYS (acosf, float, (float x));
187 _GL_CXXALIAS_SYS (acosf, float, (float x));
188 _GL_CXXALIASWARN (acosf);
189 #elif defined GNULIB_POSIXCHECK
191 # if HAVE_RAW_DECL_ACOSF
192 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
193 "use gnulib module acosf for portability");
198 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
200 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
202 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
203 _GL_CXXALIASWARN (acosl);
204 #elif defined GNULIB_POSIXCHECK
206 # if HAVE_RAW_DECL_ACOSL
207 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
208 "use gnulib module mathl for portability");
216 _GL_FUNCDECL_SYS (asinf, float, (float x));
218 _GL_CXXALIAS_SYS (asinf, float, (float x));
219 _GL_CXXALIASWARN (asinf);
220 #elif defined GNULIB_POSIXCHECK
222 # if HAVE_RAW_DECL_ASINF
223 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
224 "use gnulib module asinf for portability");
229 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
231 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
233 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
234 _GL_CXXALIASWARN (asinl);
235 #elif defined GNULIB_POSIXCHECK
237 # if HAVE_RAW_DECL_ASINL
238 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
239 "use gnulib module mathl for portability");
247 _GL_FUNCDECL_SYS (atanf, float, (float x));
249 _GL_CXXALIAS_SYS (atanf, float, (float x));
250 _GL_CXXALIASWARN (atanf);
251 #elif defined GNULIB_POSIXCHECK
253 # if HAVE_RAW_DECL_ATANF
254 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
255 "use gnulib module atanf for portability");
260 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
262 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
264 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
265 _GL_CXXALIASWARN (atanl);
266 #elif defined GNULIB_POSIXCHECK
268 # if HAVE_RAW_DECL_ATANL
269 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
270 "use gnulib module mathl for portability");
278 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
280 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
281 _GL_CXXALIASWARN (atan2f);
282 #elif defined GNULIB_POSIXCHECK
284 # if HAVE_RAW_DECL_ATAN2F
285 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
286 "use gnulib module atan2f for portability");
293 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
295 # define cbrtf rpl_cbrtf
297 _GL_FUNCDECL_RPL (cbrtf, float, (float x));
298 _GL_CXXALIAS_RPL (cbrtf, float, (float x));
300 # if !@HAVE_DECL_CBRTF@
301 _GL_FUNCDECL_SYS (cbrtf, float, (float x));
303 _GL_CXXALIAS_SYS (cbrtf, float, (float x));
305 _GL_CXXALIASWARN (cbrtf);
306 #elif defined GNULIB_POSIXCHECK
308 # if HAVE_RAW_DECL_CBRTF
309 _GL_WARN_ON_USE (cbrtf, "cbrtf is unportable - "
310 "use gnulib module cbrtf for portability");
316 _GL_FUNCDECL_SYS (cbrt, double, (double x));
318 _GL_CXXALIAS_SYS (cbrt, double, (double x));
319 _GL_CXXALIASWARN (cbrt);
320 #elif defined GNULIB_POSIXCHECK
322 # if HAVE_RAW_DECL_CBRT
323 _GL_WARN_ON_USE (cbrt, "cbrt is unportable - "
324 "use gnulib module cbrt for portability");
329 # if !@HAVE_DECL_CBRTL@
330 _GL_FUNCDECL_SYS (cbrtl, long double, (long double x));
332 _GL_CXXALIAS_SYS (cbrtl, long double, (long double x));
333 _GL_CXXALIASWARN (cbrtl);
334 #elif defined GNULIB_POSIXCHECK
336 # if HAVE_RAW_DECL_CBRTL
337 _GL_WARN_ON_USE (cbrtl, "cbrtl is unportable - "
338 "use gnulib module cbrtl for portability");
345 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
347 # define ceilf rpl_ceilf
349 _GL_FUNCDECL_RPL (ceilf, float, (float x));
350 _GL_CXXALIAS_RPL (ceilf, float, (float x));
352 # if !@HAVE_DECL_CEILF@
354 _GL_FUNCDECL_SYS (ceilf, float, (float x));
356 _GL_CXXALIAS_SYS (ceilf, float, (float x));
358 _GL_CXXALIASWARN (ceilf);
359 #elif defined GNULIB_POSIXCHECK
361 # if HAVE_RAW_DECL_CEILF
362 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
363 "use gnulib module ceilf for portability");
369 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
370 # define ceil rpl_ceil
372 _GL_FUNCDECL_RPL (ceil, double, (double x));
373 _GL_CXXALIAS_RPL (ceil, double, (double x));
375 _GL_CXXALIAS_SYS (ceil, double, (double x));
377 _GL_CXXALIASWARN (ceil);
382 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
384 # define ceill rpl_ceill
386 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
387 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
389 # if !@HAVE_DECL_CEILL@
391 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
393 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
395 _GL_CXXALIASWARN (ceill);
396 #elif defined GNULIB_POSIXCHECK
398 # if HAVE_RAW_DECL_CEILL
399 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
400 "use gnulib module ceill for portability");
405 #if @GNULIB_COPYSIGNF@
406 # if !@HAVE_COPYSIGNF@
407 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
409 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
410 _GL_CXXALIASWARN (copysignf);
411 #elif defined GNULIB_POSIXCHECK
413 # if HAVE_RAW_DECL_COPYSIGNF
414 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
415 "use gnulib module copysignf for portability");
419 #if @GNULIB_COPYSIGN@
420 # if !@HAVE_COPYSIGN@
421 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
423 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
424 _GL_CXXALIASWARN (copysign);
425 #elif defined GNULIB_POSIXCHECK
427 # if HAVE_RAW_DECL_COPYSIGN
428 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
429 "use gnulib module copysign for portability");
433 #if @GNULIB_COPYSIGNL@
434 # if !@HAVE_COPYSIGNL@
435 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
437 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
438 _GL_CXXALIASWARN (copysignl);
439 #elif defined GNULIB_POSIXCHECK
441 # if HAVE_RAW_DECL_COPYSIGNL
442 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
443 "use gnulib module copysignl for portability");
451 _GL_FUNCDECL_SYS (cosf, float, (float x));
453 _GL_CXXALIAS_SYS (cosf, float, (float x));
454 _GL_CXXALIASWARN (cosf);
455 #elif defined GNULIB_POSIXCHECK
457 # if HAVE_RAW_DECL_COSF
458 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
459 "use gnulib module cosf for portability");
464 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
466 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
468 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
469 _GL_CXXALIASWARN (cosl);
470 #elif defined GNULIB_POSIXCHECK
472 # if HAVE_RAW_DECL_COSL
473 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
474 "use gnulib module mathl for portability");
482 _GL_FUNCDECL_SYS (coshf, float, (float x));
484 _GL_CXXALIAS_SYS (coshf, float, (float x));
485 _GL_CXXALIASWARN (coshf);
486 #elif defined GNULIB_POSIXCHECK
488 # if HAVE_RAW_DECL_COSHF
489 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
490 "use gnulib module coshf for portability");
498 _GL_FUNCDECL_SYS (expf, float, (float x));
500 _GL_CXXALIAS_SYS (expf, float, (float x));
501 _GL_CXXALIASWARN (expf);
502 #elif defined GNULIB_POSIXCHECK
504 # if HAVE_RAW_DECL_EXPF
505 _GL_WARN_ON_USE (expf, "expf is unportable - "
506 "use gnulib module expf for portability");
511 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
513 _GL_FUNCDECL_SYS (expl, long double, (long double x));
515 _GL_CXXALIAS_SYS (expl, long double, (long double x));
516 _GL_CXXALIASWARN (expl);
517 #elif defined GNULIB_POSIXCHECK
519 # if HAVE_RAW_DECL_EXPL
520 _GL_WARN_ON_USE (expl, "expl is unportable - "
521 "use gnulib module mathl for portability");
529 _GL_FUNCDECL_SYS (fabsf, float, (float x));
531 _GL_CXXALIAS_SYS (fabsf, float, (float x));
532 _GL_CXXALIASWARN (fabsf);
533 #elif defined GNULIB_POSIXCHECK
535 # if HAVE_RAW_DECL_FABSF
536 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
537 "use gnulib module fabsf for portability");
543 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
545 # define fabsl rpl_fabsl
547 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
548 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
552 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
554 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
556 _GL_CXXALIASWARN (fabsl);
557 #elif defined GNULIB_POSIXCHECK
559 # if HAVE_RAW_DECL_FABSL
560 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
561 "use gnulib module fabsl for portability");
567 # if @REPLACE_FLOORF@
568 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
570 # define floorf rpl_floorf
572 _GL_FUNCDECL_RPL (floorf, float, (float x));
573 _GL_CXXALIAS_RPL (floorf, float, (float x));
575 # if !@HAVE_DECL_FLOORF@
577 _GL_FUNCDECL_SYS (floorf, float, (float x));
579 _GL_CXXALIAS_SYS (floorf, float, (float x));
581 _GL_CXXALIASWARN (floorf);
582 #elif defined GNULIB_POSIXCHECK
584 # if HAVE_RAW_DECL_FLOORF
585 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
586 "use gnulib module floorf for portability");
592 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
593 # define floor rpl_floor
595 _GL_FUNCDECL_RPL (floor, double, (double x));
596 _GL_CXXALIAS_RPL (floor, double, (double x));
598 _GL_CXXALIAS_SYS (floor, double, (double x));
600 _GL_CXXALIASWARN (floor);
604 # if @REPLACE_FLOORL@
605 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
607 # define floorl rpl_floorl
609 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
610 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
612 # if !@HAVE_DECL_FLOORL@
614 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
616 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
618 _GL_CXXALIASWARN (floorl);
619 #elif defined GNULIB_POSIXCHECK
621 # if HAVE_RAW_DECL_FLOORL
622 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
623 "use gnulib module floorl for portability");
630 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
632 # define fmaf rpl_fmaf
634 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
635 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
638 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
640 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
642 _GL_CXXALIASWARN (fmaf);
643 #elif defined GNULIB_POSIXCHECK
645 # if HAVE_RAW_DECL_FMAF
646 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
647 "use gnulib module fmaf for portability");
653 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
657 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
658 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
661 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
663 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
665 _GL_CXXALIASWARN (fma);
666 #elif defined GNULIB_POSIXCHECK
668 # if HAVE_RAW_DECL_FMA
669 _GL_WARN_ON_USE (fma, "fma is unportable - "
670 "use gnulib module fma for portability");
676 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
678 # define fmal rpl_fmal
680 _GL_FUNCDECL_RPL (fmal, long double,
681 (long double x, long double y, long double z));
682 _GL_CXXALIAS_RPL (fmal, long double,
683 (long double x, long double y, long double z));
686 _GL_FUNCDECL_SYS (fmal, long double,
687 (long double x, long double y, long double z));
689 _GL_CXXALIAS_SYS (fmal, long double,
690 (long double x, long double y, long double z));
692 _GL_CXXALIASWARN (fmal);
693 #elif defined GNULIB_POSIXCHECK
695 # if HAVE_RAW_DECL_FMAL
696 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
697 "use gnulib module fmal for portability");
704 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
706 # define fmodf rpl_fmodf
708 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
709 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
713 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
715 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
717 _GL_CXXALIASWARN (fmodf);
718 #elif defined GNULIB_POSIXCHECK
720 # if HAVE_RAW_DECL_FMODF
721 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
722 "use gnulib module fmodf for portability");
728 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
730 # define fmod rpl_fmod
732 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
733 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
735 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
737 _GL_CXXALIASWARN (fmod);
738 #elif defined GNULIB_POSIXCHECK
740 # if HAVE_RAW_DECL_FMOD
741 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
742 "use gnulib module fmod for portability");
748 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
750 # define fmodl rpl_fmodl
752 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
753 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
757 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
759 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
761 _GL_CXXALIASWARN (fmodl);
762 #elif defined GNULIB_POSIXCHECK
764 # if HAVE_RAW_DECL_FMODL
765 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
766 "use gnulib module fmodl for portability");
774 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
775 If x is zero: mantissa = x, exp = 0.
776 If x is infinite or NaN: mantissa = x, exp unspecified.
777 Store exp in *EXPPTR and return mantissa. */
779 # if @REPLACE_FREXPF@
780 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
782 # define frexpf rpl_frexpf
784 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
785 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
789 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
791 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
793 _GL_CXXALIASWARN (frexpf);
794 #elif defined GNULIB_POSIXCHECK
796 # if HAVE_RAW_DECL_FREXPF
797 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
798 "use gnulib module frexpf for portability");
805 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
806 If x is zero: mantissa = x, exp = 0.
807 If x is infinite or NaN: mantissa = x, exp unspecified.
808 Store exp in *EXPPTR and return mantissa. */
811 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
812 # define frexp rpl_frexp
814 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
815 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
817 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
819 _GL_CXXALIASWARN (frexp);
820 #elif defined GNULIB_POSIXCHECK
822 /* Assume frexp is always declared. */
823 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
824 "use gnulib module frexp for portability");
830 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
831 If x is zero: mantissa = x, exp = 0.
832 If x is infinite or NaN: mantissa = x, exp unspecified.
833 Store exp in *EXPPTR and return mantissa. */
834 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
835 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
837 # define frexpl rpl_frexpl
839 _GL_FUNCDECL_RPL (frexpl, long double,
840 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
841 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
843 # if !@HAVE_DECL_FREXPL@
844 _GL_FUNCDECL_SYS (frexpl, long double,
845 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
848 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
851 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
852 _GL_CXXALIASWARN (frexpl);
854 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
856 # if HAVE_RAW_DECL_FREXPL
857 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
858 "use gnulib module frexpl for portability");
863 /* Return sqrt(x^2+y^2). */
865 # if @REPLACE_HYPOTF@
866 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
868 # define hypotf rpl_hypotf
870 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
871 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
874 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
876 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
878 _GL_CXXALIASWARN (hypotf);
879 #elif defined GNULIB_POSIXCHECK
881 # if HAVE_RAW_DECL_HYPOTF
882 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
883 "use gnulib module hypotf for portability");
887 /* Return sqrt(x^2+y^2). */
890 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
892 # define hypot rpl_hypot
894 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
895 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
897 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
899 _GL_CXXALIASWARN (hypot);
900 #elif defined GNULIB_POSIXCHECK
902 # if HAVE_RAW_DECL_HYPOT
903 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
904 "use gnulib module hypot for portability");
908 /* Return sqrt(x^2+y^2). */
910 # if @REPLACE_HYPOTL@
911 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
913 # define hypotl rpl_hypotl
915 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
916 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
919 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
921 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
923 _GL_CXXALIASWARN (hypotl);
924 #elif defined GNULIB_POSIXCHECK
926 # if HAVE_RAW_DECL_HYPOTL
927 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
928 "use gnulib module hypotl for portability");
933 /* Return x * 2^exp. */
937 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
939 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
940 _GL_CXXALIASWARN (ldexpf);
941 #elif defined GNULIB_POSIXCHECK
943 # if HAVE_RAW_DECL_LDEXPF
944 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
945 "use gnulib module ldexpf for portability");
949 /* Return x * 2^exp. */
950 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
951 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
953 # define ldexpl rpl_ldexpl
955 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
956 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
958 # if !@HAVE_DECL_LDEXPL@
959 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
962 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
966 _GL_CXXALIASWARN (ldexpl);
968 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
970 # if HAVE_RAW_DECL_LDEXPL
971 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
972 "use gnulib module ldexpl for portability");
978 # if !@HAVE_DECL_LOGB@
979 _GL_EXTERN_C double logb (double x);
981 #elif defined GNULIB_POSIXCHECK
983 # if HAVE_RAW_DECL_LOGB
984 _GL_WARN_ON_USE (logb, "logb is unportable - "
985 "use gnulib module logb for portability");
993 _GL_FUNCDECL_SYS (logf, float, (float x));
995 _GL_CXXALIAS_SYS (logf, float, (float x));
996 _GL_CXXALIASWARN (logf);
997 #elif defined GNULIB_POSIXCHECK
999 # if HAVE_RAW_DECL_LOGF
1000 _GL_WARN_ON_USE (logf, "logf is unportable - "
1001 "use gnulib module logf for portability");
1006 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1008 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1010 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1011 _GL_CXXALIASWARN (logl);
1012 #elif defined GNULIB_POSIXCHECK
1014 # if HAVE_RAW_DECL_LOGL
1015 _GL_WARN_ON_USE (logl, "logl is unportable - "
1016 "use gnulib module mathl for portability");
1024 _GL_FUNCDECL_SYS (log10f, float, (float x));
1026 _GL_CXXALIAS_SYS (log10f, float, (float x));
1027 _GL_CXXALIASWARN (log10f);
1028 #elif defined GNULIB_POSIXCHECK
1030 # if HAVE_RAW_DECL_LOG10F
1031 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1032 "use gnulib module log10f for portability");
1037 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1039 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1041 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1042 _GL_CXXALIASWARN (log10l);
1043 #elif defined GNULIB_POSIXCHECK
1045 # if HAVE_RAW_DECL_LOG10L
1046 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1047 "use gnulib module log10l for portability");
1053 # if @REPLACE_MODFF@
1054 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1056 # define modff rpl_modff
1058 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1059 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1063 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1065 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1067 _GL_CXXALIASWARN (modff);
1068 #elif defined GNULIB_POSIXCHECK
1070 # if HAVE_RAW_DECL_MODFF
1071 _GL_WARN_ON_USE (modff, "modff is unportable - "
1072 "use gnulib module modff for portability");
1078 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1080 # define modf rpl_modf
1082 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1083 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1085 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1087 _GL_CXXALIASWARN (modf);
1088 #elif defined GNULIB_POSIXCHECK
1090 # if HAVE_RAW_DECL_MODF
1091 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1092 "use gnulib module modf for portability");
1097 # if @REPLACE_MODFL@
1098 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1100 # define modfl rpl_modfl
1102 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1103 _GL_ARG_NONNULL ((2)));
1104 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1108 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1109 _GL_ARG_NONNULL ((2)));
1111 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1113 _GL_CXXALIASWARN (modfl);
1114 #elif defined GNULIB_POSIXCHECK
1116 # if HAVE_RAW_DECL_MODFL
1117 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1118 "use gnulib module modfl for portability");
1126 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1128 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1129 _GL_CXXALIASWARN (powf);
1130 #elif defined GNULIB_POSIXCHECK
1132 # if HAVE_RAW_DECL_POWF
1133 _GL_WARN_ON_USE (powf, "powf is unportable - "
1134 "use gnulib module powf for portability");
1139 #if @GNULIB_REMAINDERF@
1140 # if @REPLACE_REMAINDERF@
1141 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1143 # define remainderf rpl_remainderf
1145 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1146 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1148 # if !@HAVE_REMAINDERF@
1149 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1151 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1153 _GL_CXXALIASWARN (remainderf);
1154 #elif defined GNULIB_POSIXCHECK
1156 # if HAVE_RAW_DECL_REMAINDERF
1157 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1158 "use gnulib module remainderf for portability");
1162 #if @GNULIB_REMAINDER@
1163 # if @REPLACE_REMAINDER@
1164 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1166 # define remainder rpl_remainder
1168 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1169 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1171 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1172 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1174 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1176 _GL_CXXALIASWARN (remainder);
1177 #elif defined GNULIB_POSIXCHECK
1179 # if HAVE_RAW_DECL_REMAINDER
1180 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1181 "use gnulib module remainder for portability");
1185 #if @GNULIB_REMAINDERL@
1186 # if @REPLACE_REMAINDERL@
1187 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1189 # define remainderl rpl_remainderl
1191 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1192 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1194 # if !@HAVE_REMAINDERL@
1195 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1197 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1199 _GL_CXXALIASWARN (remainderl);
1200 #elif defined GNULIB_POSIXCHECK
1202 # if HAVE_RAW_DECL_REMAINDERL
1203 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1204 "use gnulib module remainderl for portability");
1211 _GL_FUNCDECL_SYS (rintf, float, (float x));
1213 _GL_CXXALIAS_SYS (rintf, float, (float x));
1214 _GL_CXXALIASWARN (rintf);
1215 #elif defined GNULIB_POSIXCHECK
1217 # if HAVE_RAW_DECL_RINTF
1218 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1219 "use gnulib module rintf for portability");
1225 _GL_FUNCDECL_SYS (rint, double, (double x));
1227 _GL_CXXALIAS_SYS (rint, double, (double x));
1228 _GL_CXXALIASWARN (rint);
1229 #elif defined GNULIB_POSIXCHECK
1231 # if HAVE_RAW_DECL_RINT
1232 _GL_WARN_ON_USE (rint, "rint is unportable - "
1233 "use gnulib module rint for portability");
1239 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1241 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1242 _GL_CXXALIASWARN (rintl);
1243 #elif defined GNULIB_POSIXCHECK
1245 # if HAVE_RAW_DECL_RINTL
1246 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1247 "use gnulib module rintl for portability");
1253 # if @REPLACE_ROUNDF@
1254 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1256 # define roundf rpl_roundf
1258 _GL_FUNCDECL_RPL (roundf, float, (float x));
1259 _GL_CXXALIAS_RPL (roundf, float, (float x));
1261 # if !@HAVE_DECL_ROUNDF@
1262 _GL_FUNCDECL_SYS (roundf, float, (float x));
1264 _GL_CXXALIAS_SYS (roundf, float, (float x));
1266 _GL_CXXALIASWARN (roundf);
1267 #elif defined GNULIB_POSIXCHECK
1269 # if HAVE_RAW_DECL_ROUNDF
1270 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1271 "use gnulib module roundf for portability");
1276 # if @REPLACE_ROUND@
1277 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1279 # define round rpl_round
1281 _GL_FUNCDECL_RPL (round, double, (double x));
1282 _GL_CXXALIAS_RPL (round, double, (double x));
1284 # if !@HAVE_DECL_ROUND@
1285 _GL_FUNCDECL_SYS (round, double, (double x));
1287 _GL_CXXALIAS_SYS (round, double, (double x));
1289 _GL_CXXALIASWARN (round);
1290 #elif defined GNULIB_POSIXCHECK
1292 # if HAVE_RAW_DECL_ROUND
1293 _GL_WARN_ON_USE (round, "round is unportable - "
1294 "use gnulib module round for portability");
1299 # if @REPLACE_ROUNDL@
1300 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1302 # define roundl rpl_roundl
1304 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1305 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1307 # if !@HAVE_DECL_ROUNDL@
1308 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1310 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1312 _GL_CXXALIASWARN (roundl);
1313 #elif defined GNULIB_POSIXCHECK
1315 # if HAVE_RAW_DECL_ROUNDL
1316 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1317 "use gnulib module roundl for portability");
1325 _GL_FUNCDECL_SYS (sinf, float, (float x));
1327 _GL_CXXALIAS_SYS (sinf, float, (float x));
1328 _GL_CXXALIASWARN (sinf);
1329 #elif defined GNULIB_POSIXCHECK
1331 # if HAVE_RAW_DECL_SINF
1332 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1333 "use gnulib module sinf for portability");
1338 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1340 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1342 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1343 _GL_CXXALIASWARN (sinl);
1344 #elif defined GNULIB_POSIXCHECK
1346 # if HAVE_RAW_DECL_SINL
1347 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1348 "use gnulib module mathl for portability");
1356 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1358 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1359 _GL_CXXALIASWARN (sinhf);
1360 #elif defined GNULIB_POSIXCHECK
1362 # if HAVE_RAW_DECL_SINHF
1363 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1364 "use gnulib module sinhf for portability");
1372 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1374 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1375 _GL_CXXALIASWARN (sqrtf);
1376 #elif defined GNULIB_POSIXCHECK
1378 # if HAVE_RAW_DECL_SQRTF
1379 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1380 "use gnulib module sqrtf for portability");
1385 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1387 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1389 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1390 _GL_CXXALIASWARN (sqrtl);
1391 #elif defined GNULIB_POSIXCHECK
1393 # if HAVE_RAW_DECL_SQRTL
1394 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1395 "use gnulib module mathl for portability");
1403 _GL_FUNCDECL_SYS (tanf, float, (float x));
1405 _GL_CXXALIAS_SYS (tanf, float, (float x));
1406 _GL_CXXALIASWARN (tanf);
1407 #elif defined GNULIB_POSIXCHECK
1409 # if HAVE_RAW_DECL_TANF
1410 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1411 "use gnulib module tanf for portability");
1416 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1418 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1420 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1421 _GL_CXXALIASWARN (tanl);
1422 #elif defined GNULIB_POSIXCHECK
1424 # if HAVE_RAW_DECL_TANL
1425 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1426 "use gnulib module mathl for portability");
1434 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1436 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1437 _GL_CXXALIASWARN (tanhf);
1438 #elif defined GNULIB_POSIXCHECK
1440 # if HAVE_RAW_DECL_TANHF
1441 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1442 "use gnulib module tanhf for portability");
1448 # if @REPLACE_TRUNCF@
1449 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1450 # define truncf rpl_truncf
1452 _GL_FUNCDECL_RPL (truncf, float, (float x));
1453 _GL_CXXALIAS_RPL (truncf, float, (float x));
1455 # if !@HAVE_DECL_TRUNCF@
1456 _GL_FUNCDECL_SYS (truncf, float, (float x));
1458 _GL_CXXALIAS_SYS (truncf, float, (float x));
1460 _GL_CXXALIASWARN (truncf);
1461 #elif defined GNULIB_POSIXCHECK
1463 # if HAVE_RAW_DECL_TRUNCF
1464 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1465 "use gnulib module truncf for portability");
1470 # if @REPLACE_TRUNC@
1471 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1472 # define trunc rpl_trunc
1474 _GL_FUNCDECL_RPL (trunc, double, (double x));
1475 _GL_CXXALIAS_RPL (trunc, double, (double x));
1477 # if !@HAVE_DECL_TRUNC@
1478 _GL_FUNCDECL_SYS (trunc, double, (double x));
1480 _GL_CXXALIAS_SYS (trunc, double, (double x));
1482 _GL_CXXALIASWARN (trunc);
1483 #elif defined GNULIB_POSIXCHECK
1485 # if HAVE_RAW_DECL_TRUNC
1486 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1487 "use gnulib module trunc for portability");
1492 # if @REPLACE_TRUNCL@
1493 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1495 # define truncl rpl_truncl
1497 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1498 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1500 # if !@HAVE_DECL_TRUNCL@
1501 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1503 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1505 _GL_CXXALIASWARN (truncl);
1506 #elif defined GNULIB_POSIXCHECK
1508 # if HAVE_RAW_DECL_TRUNCL
1509 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1510 "use gnulib module truncl for portability");
1515 /* Definitions of function-like macros come here, after the function
1519 #if @GNULIB_ISFINITE@
1520 # if @REPLACE_ISFINITE@
1521 _GL_EXTERN_C int gl_isfinitef (float x);
1522 _GL_EXTERN_C int gl_isfinited (double x);
1523 _GL_EXTERN_C int gl_isfinitel (long double x);
1525 # define isfinite(x) \
1526 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1527 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1532 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1534 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1537 #elif defined GNULIB_POSIXCHECK
1538 # if defined isfinite
1539 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1541 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1547 # if @REPLACE_ISINF@
1548 _GL_EXTERN_C int gl_isinff (float x);
1549 _GL_EXTERN_C int gl_isinfd (double x);
1550 _GL_EXTERN_C int gl_isinfl (long double x);
1553 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1554 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1559 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1561 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1564 #elif defined GNULIB_POSIXCHECK
1566 _GL_WARN_REAL_FLOATING_DECL (isinf);
1568 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1574 /* Test for NaN for 'float' numbers. */
1576 /* The original <math.h> included above provides a declaration of isnan macro
1577 or (older) isnanf function. */
1579 /* GCC 4.0 and newer provides three built-ins for isnan. */
1581 # define isnanf(x) __builtin_isnanf ((float)(x))
1582 # elif defined isnan
1584 # define isnanf(x) isnan ((float)(x))
1587 /* Test whether X is a NaN. */
1589 # define isnanf rpl_isnanf
1590 _GL_EXTERN_C int isnanf (float x);
1595 /* Test for NaN for 'double' numbers.
1596 This function is a gnulib extension, unlike isnan() which applied only
1597 to 'double' numbers earlier but now is a type-generic macro. */
1599 /* The original <math.h> included above provides a declaration of isnan
1602 /* GCC 4.0 and newer provides three built-ins for isnan. */
1604 # define isnand(x) __builtin_isnan ((double)(x))
1607 # define isnand(x) isnan ((double)(x))
1610 /* Test whether X is a NaN. */
1612 # define isnand rpl_isnand
1613 _GL_EXTERN_C int isnand (double x);
1618 /* Test for NaN for 'long double' numbers. */
1620 /* The original <math.h> included above provides a declaration of isnan
1621 macro or (older) isnanl function. */
1623 /* GCC 4.0 and newer provides three built-ins for isnan. */
1625 # define isnanl(x) __builtin_isnanl ((long double)(x))
1626 # elif defined isnan
1628 # define isnanl(x) isnan ((long double)(x))
1631 /* Test whether X is a NaN. */
1633 # define isnanl rpl_isnanl
1634 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1638 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1640 # if @REPLACE_ISNAN@
1641 /* We can't just use the isnanf macro (e.g.) as exposed by
1642 isnanf.h (e.g.) here, because those may end up being macros
1643 that recursively expand back to isnan. So use the gnulib
1644 replacements for them directly. */
1645 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1646 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1648 _GL_EXTERN_C int rpl_isnanf (float x);
1649 # define gl_isnan_f(x) rpl_isnanf (x)
1651 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1652 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1654 _GL_EXTERN_C int rpl_isnand (double x);
1655 # define gl_isnan_d(x) rpl_isnand (x)
1657 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1658 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1660 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1661 # define gl_isnan_l(x) rpl_isnanl (x)
1665 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1666 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1668 # elif __GNUC__ >= 4
1671 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1672 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1673 __builtin_isnanf ((float)(x)))
1677 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1679 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1682 /* Ensure isnan is a macro. */
1684 # define isnan isnan
1687 #elif defined GNULIB_POSIXCHECK
1689 _GL_WARN_REAL_FLOATING_DECL (isnan);
1691 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1696 #if @GNULIB_SIGNBIT@
1697 # if @REPLACE_SIGNBIT_USING_GCC@
1699 /* GCC 4.0 and newer provides three built-ins for signbit. */
1700 # define signbit(x) \
1701 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1702 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1703 __builtin_signbitf (x))
1705 # if @REPLACE_SIGNBIT@
1707 _GL_EXTERN_C int gl_signbitf (float arg);
1708 _GL_EXTERN_C int gl_signbitd (double arg);
1709 _GL_EXTERN_C int gl_signbitl (long double arg);
1710 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1711 # define _GL_NUM_UINT_WORDS(type) \
1712 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1713 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1714 # define gl_signbitf_OPTIMIZED_MACRO
1715 # define gl_signbitf(arg) \
1716 ({ union { float _value; \
1717 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1719 _m._value = (arg); \
1720 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1723 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1724 # define gl_signbitd_OPTIMIZED_MACRO
1725 # define gl_signbitd(arg) \
1726 ({ union { double _value; \
1727 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1729 _m._value = (arg); \
1730 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1733 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1734 # define gl_signbitl_OPTIMIZED_MACRO
1735 # define gl_signbitl(arg) \
1736 ({ union { long double _value; \
1737 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1739 _m._value = (arg); \
1740 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1744 # define signbit(x) \
1745 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1746 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1751 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1753 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1756 #elif defined GNULIB_POSIXCHECK
1757 # if defined signbit
1758 _GL_WARN_REAL_FLOATING_DECL (signbit);
1760 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1765 #endif /* _@GUARD_PREFIX@_MATH_H */
1766 #endif /* _@GUARD_PREFIX@_MATH_H */