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
31 _GL_INLINE_HEADER_BEGIN
32 #ifndef _GL_MATH_INLINE
33 # define _GL_MATH_INLINE _GL_INLINE
36 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
38 /* The definition of _GL_ARG_NONNULL is copied here. */
40 /* The definition of _GL_WARN_ON_USE is copied here. */
43 /* Helper macros to define type-generic function FUNC as overloaded functions,
44 rather than as macros like in C. POSIX declares these with an argument of
45 real-floating (that is, one of float, double, or long double). */
46 # define _GL_MATH_CXX_REAL_FLOATING_DECL_1(func) \
48 _gl_cxx_ ## func ## f (float f) \
53 _gl_cxx_ ## func ## d (double d) \
58 _gl_cxx_ ## func ## l (long double l) \
62 # define _GL_MATH_CXX_REAL_FLOATING_DECL_2(func) \
66 return _gl_cxx_ ## func ## f (f); \
71 return _gl_cxx_ ## func ## d (d); \
74 func (long double l) \
76 return _gl_cxx_ ## func ## l (l); \
80 /* Helper macros to define a portability warning for the
81 classification macro FUNC called with VALUE. POSIX declares the
82 classification macros with an argument of real-floating (that is,
83 one of float, double, or long double). */
84 #define _GL_WARN_REAL_FLOATING_DECL(func) \
86 rpl_ ## func ## f (float f) \
91 rpl_ ## func ## d (double d) \
96 rpl_ ## func ## l (long double l) \
100 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \
101 "use gnulib module " #func " for portability"); \
102 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \
103 "use gnulib module " #func " for portability"); \
104 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \
105 "use gnulib module " #func " for portability")
106 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
107 (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \
108 : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \
109 : rpl_ ## func ## l (value))
113 /* Pull in a function that fixes the 'int' to 'long double' conversion
115 _GL_EXTERN_C void _Qp_itoq (long double *, int);
116 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
120 /* POSIX allows platforms that don't support NAN. But all major
121 machines in the past 15 years have supported something close to
122 IEEE NaN, so we define this unconditionally. We also must define
123 it on platforms like Solaris 10, where NAN is present but defined
124 as a function pointer rather than a floating point constant. */
125 #if !defined NAN || @REPLACE_NAN@
126 # if !GNULIB_defined_NAN
128 /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
129 choke on the expression 0.0 / 0.0. */
130 # if defined __DECC || defined _MSC_VER
131 _GL_MATH_INLINE float
134 static float zero = 0.0f;
137 # define NAN (_NaN())
139 # define NAN (0.0f / 0.0f)
141 # define GNULIB_defined_NAN 1
145 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
146 than a floating point constant. */
147 #if @REPLACE_HUGE_VAL@
149 # define HUGE_VALF (1.0f / 0.0f)
151 # define HUGE_VAL (1.0 / 0.0)
153 # define HUGE_VALL (1.0L / 0.0L)
156 /* HUGE_VALF is a 'float' Infinity. */
158 # if defined _MSC_VER
159 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f. */
160 # define HUGE_VALF (1e25f * 1e25f)
162 # define HUGE_VALF (1.0f / 0.0f)
166 /* HUGE_VAL is a 'double' Infinity. */
168 # if defined _MSC_VER
169 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
170 # define HUGE_VAL (1e250 * 1e250)
172 # define HUGE_VAL (1.0 / 0.0)
176 /* HUGE_VALL is a 'long double' Infinity. */
178 # if defined _MSC_VER
179 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. */
180 # define HUGE_VALL (1e250L * 1e250L)
182 # define HUGE_VALL (1.0L / 0.0L)
187 /* Ensure FP_ILOGB0 and FP_ILOGBNAN are defined. */
188 #if !(defined FP_ILOGB0 && defined FP_ILOGBNAN)
189 # if defined __NetBSD__ || defined __sgi
190 /* NetBSD, IRIX 6.5: match what ilogb() does */
191 # define FP_ILOGB0 (- 2147483647 - 1) /* INT_MIN */
192 # define FP_ILOGBNAN (- 2147483647 - 1) /* INT_MIN */
194 /* AIX 5.1: match what ilogb() does in AIX >= 5.2 */
195 # define FP_ILOGB0 (- 2147483647 - 1) /* INT_MIN */
196 # define FP_ILOGBNAN 2147483647 /* INT_MAX */
198 /* Solaris 9: match what ilogb() does */
199 # define FP_ILOGB0 (- 2147483647) /* - INT_MAX */
200 # define FP_ILOGBNAN 2147483647 /* INT_MAX */
202 /* Gnulib defined values. */
203 # define FP_ILOGB0 (- 2147483647) /* - INT_MAX */
204 # define FP_ILOGBNAN (- 2147483647 - 1) /* INT_MIN */
212 _GL_FUNCDECL_SYS (acosf, float, (float x));
214 _GL_CXXALIAS_SYS (acosf, float, (float x));
215 _GL_CXXALIASWARN (acosf);
216 #elif defined GNULIB_POSIXCHECK
218 # if HAVE_RAW_DECL_ACOSF
219 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
220 "use gnulib module acosf for portability");
225 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
227 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
229 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
230 _GL_CXXALIASWARN (acosl);
231 #elif defined GNULIB_POSIXCHECK
233 # if HAVE_RAW_DECL_ACOSL
234 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
235 "use gnulib module acosl for portability");
243 _GL_FUNCDECL_SYS (asinf, float, (float x));
245 _GL_CXXALIAS_SYS (asinf, float, (float x));
246 _GL_CXXALIASWARN (asinf);
247 #elif defined GNULIB_POSIXCHECK
249 # if HAVE_RAW_DECL_ASINF
250 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
251 "use gnulib module asinf for portability");
256 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
258 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
260 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
261 _GL_CXXALIASWARN (asinl);
262 #elif defined GNULIB_POSIXCHECK
264 # if HAVE_RAW_DECL_ASINL
265 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
266 "use gnulib module asinl for portability");
274 _GL_FUNCDECL_SYS (atanf, float, (float x));
276 _GL_CXXALIAS_SYS (atanf, float, (float x));
277 _GL_CXXALIASWARN (atanf);
278 #elif defined GNULIB_POSIXCHECK
280 # if HAVE_RAW_DECL_ATANF
281 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
282 "use gnulib module atanf for portability");
287 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
289 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
291 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
292 _GL_CXXALIASWARN (atanl);
293 #elif defined GNULIB_POSIXCHECK
295 # if HAVE_RAW_DECL_ATANL
296 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
297 "use gnulib module atanl for portability");
305 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
307 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
308 _GL_CXXALIASWARN (atan2f);
309 #elif defined GNULIB_POSIXCHECK
311 # if HAVE_RAW_DECL_ATAN2F
312 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
313 "use gnulib module atan2f for portability");
320 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
322 # define cbrtf rpl_cbrtf
324 _GL_FUNCDECL_RPL (cbrtf, float, (float x));
325 _GL_CXXALIAS_RPL (cbrtf, float, (float x));
327 # if !@HAVE_DECL_CBRTF@
328 _GL_FUNCDECL_SYS (cbrtf, float, (float x));
330 _GL_CXXALIAS_SYS (cbrtf, float, (float x));
332 _GL_CXXALIASWARN (cbrtf);
333 #elif defined GNULIB_POSIXCHECK
335 # if HAVE_RAW_DECL_CBRTF
336 _GL_WARN_ON_USE (cbrtf, "cbrtf is unportable - "
337 "use gnulib module cbrtf for portability");
343 _GL_FUNCDECL_SYS (cbrt, double, (double x));
345 _GL_CXXALIAS_SYS (cbrt, double, (double x));
346 _GL_CXXALIASWARN (cbrt);
347 #elif defined GNULIB_POSIXCHECK
349 # if HAVE_RAW_DECL_CBRT
350 _GL_WARN_ON_USE (cbrt, "cbrt is unportable - "
351 "use gnulib module cbrt for portability");
357 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
359 # define cbrtl rpl_cbrtl
361 _GL_FUNCDECL_RPL (cbrtl, long double, (long double x));
362 _GL_CXXALIAS_RPL (cbrtl, long double, (long double x));
364 # if !@HAVE_DECL_CBRTL@
365 _GL_FUNCDECL_SYS (cbrtl, long double, (long double x));
367 _GL_CXXALIAS_SYS (cbrtl, long double, (long double x));
369 _GL_CXXALIASWARN (cbrtl);
370 #elif defined GNULIB_POSIXCHECK
372 # if HAVE_RAW_DECL_CBRTL
373 _GL_WARN_ON_USE (cbrtl, "cbrtl is unportable - "
374 "use gnulib module cbrtl for portability");
381 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
383 # define ceilf rpl_ceilf
385 _GL_FUNCDECL_RPL (ceilf, float, (float x));
386 _GL_CXXALIAS_RPL (ceilf, float, (float x));
388 # if !@HAVE_DECL_CEILF@
390 _GL_FUNCDECL_SYS (ceilf, float, (float x));
392 _GL_CXXALIAS_SYS (ceilf, float, (float x));
394 _GL_CXXALIASWARN (ceilf);
395 #elif defined GNULIB_POSIXCHECK
397 # if HAVE_RAW_DECL_CEILF
398 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
399 "use gnulib module ceilf for portability");
405 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
406 # define ceil rpl_ceil
408 _GL_FUNCDECL_RPL (ceil, double, (double x));
409 _GL_CXXALIAS_RPL (ceil, double, (double x));
411 _GL_CXXALIAS_SYS (ceil, double, (double x));
413 _GL_CXXALIASWARN (ceil);
418 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
420 # define ceill rpl_ceill
422 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
423 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
425 # if !@HAVE_DECL_CEILL@
427 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
429 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
431 _GL_CXXALIASWARN (ceill);
432 #elif defined GNULIB_POSIXCHECK
434 # if HAVE_RAW_DECL_CEILL
435 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
436 "use gnulib module ceill for portability");
441 #if @GNULIB_COPYSIGNF@
442 # if !@HAVE_DECL_COPYSIGNF@
443 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
445 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
446 _GL_CXXALIASWARN (copysignf);
447 #elif defined GNULIB_POSIXCHECK
449 # if HAVE_RAW_DECL_COPYSIGNF
450 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
451 "use gnulib module copysignf for portability");
455 #if @GNULIB_COPYSIGN@
456 # if !@HAVE_COPYSIGN@
457 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
459 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
460 _GL_CXXALIASWARN (copysign);
461 #elif defined GNULIB_POSIXCHECK
463 # if HAVE_RAW_DECL_COPYSIGN
464 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
465 "use gnulib module copysign for portability");
469 #if @GNULIB_COPYSIGNL@
470 # if !@HAVE_COPYSIGNL@
471 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
473 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
474 _GL_CXXALIASWARN (copysignl);
475 #elif defined GNULIB_POSIXCHECK
477 # if HAVE_RAW_DECL_COPYSIGNL
478 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
479 "use gnulib module copysignl for portability");
487 _GL_FUNCDECL_SYS (cosf, float, (float x));
489 _GL_CXXALIAS_SYS (cosf, float, (float x));
490 _GL_CXXALIASWARN (cosf);
491 #elif defined GNULIB_POSIXCHECK
493 # if HAVE_RAW_DECL_COSF
494 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
495 "use gnulib module cosf for portability");
500 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
502 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
504 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
505 _GL_CXXALIASWARN (cosl);
506 #elif defined GNULIB_POSIXCHECK
508 # if HAVE_RAW_DECL_COSL
509 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
510 "use gnulib module cosl for portability");
518 _GL_FUNCDECL_SYS (coshf, float, (float x));
520 _GL_CXXALIAS_SYS (coshf, float, (float x));
521 _GL_CXXALIASWARN (coshf);
522 #elif defined GNULIB_POSIXCHECK
524 # if HAVE_RAW_DECL_COSHF
525 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
526 "use gnulib module coshf for portability");
534 _GL_FUNCDECL_SYS (expf, float, (float x));
536 _GL_CXXALIAS_SYS (expf, float, (float x));
537 _GL_CXXALIASWARN (expf);
538 #elif defined GNULIB_POSIXCHECK
540 # if HAVE_RAW_DECL_EXPF
541 _GL_WARN_ON_USE (expf, "expf is unportable - "
542 "use gnulib module expf for portability");
547 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
549 _GL_FUNCDECL_SYS (expl, long double, (long double x));
551 _GL_CXXALIAS_SYS (expl, long double, (long double x));
552 _GL_CXXALIASWARN (expl);
553 #elif defined GNULIB_POSIXCHECK
555 # if HAVE_RAW_DECL_EXPL
556 _GL_WARN_ON_USE (expl, "expl is unportable - "
557 "use gnulib module expl for portability");
563 # if !@HAVE_DECL_EXP2F@
564 _GL_FUNCDECL_SYS (exp2f, float, (float x));
566 _GL_CXXALIAS_SYS (exp2f, float, (float x));
567 _GL_CXXALIASWARN (exp2f);
568 #elif defined GNULIB_POSIXCHECK
570 # if HAVE_RAW_DECL_EXP2F
571 _GL_WARN_ON_USE (exp2f, "exp2f is unportable - "
572 "use gnulib module exp2f for portability");
578 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
580 # define exp2 rpl_exp2
582 _GL_FUNCDECL_RPL (exp2, double, (double x));
583 _GL_CXXALIAS_RPL (exp2, double, (double x));
585 # if !@HAVE_DECL_EXP2@
586 _GL_FUNCDECL_SYS (exp2, double, (double x));
588 _GL_CXXALIAS_SYS (exp2, double, (double x));
590 _GL_CXXALIASWARN (exp2);
591 #elif defined GNULIB_POSIXCHECK
593 # if HAVE_RAW_DECL_EXP2
594 _GL_WARN_ON_USE (exp2, "exp2 is unportable - "
595 "use gnulib module exp2 for portability");
601 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
603 # define exp2l rpl_exp2l
605 _GL_FUNCDECL_RPL (exp2l, long double, (long double x));
606 _GL_CXXALIAS_RPL (exp2l, long double, (long double x));
608 # if !@HAVE_DECL_EXP2L@
610 _GL_FUNCDECL_SYS (exp2l, long double, (long double x));
612 _GL_CXXALIAS_SYS (exp2l, long double, (long double x));
614 _GL_CXXALIASWARN (exp2l);
615 #elif defined GNULIB_POSIXCHECK
617 # if HAVE_RAW_DECL_EXP2L
618 _GL_WARN_ON_USE (exp2l, "exp2l is unportable - "
619 "use gnulib module exp2l for portability");
625 # if @REPLACE_EXPM1F@
626 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
628 # define expm1f rpl_expm1f
630 _GL_FUNCDECL_RPL (expm1f, float, (float x));
631 _GL_CXXALIAS_RPL (expm1f, float, (float x));
634 _GL_FUNCDECL_SYS (expm1f, float, (float x));
636 _GL_CXXALIAS_SYS (expm1f, float, (float x));
638 _GL_CXXALIASWARN (expm1f);
639 #elif defined GNULIB_POSIXCHECK
641 # if HAVE_RAW_DECL_EXPM1F
642 _GL_WARN_ON_USE (expm1f, "expm1f is unportable - "
643 "use gnulib module expm1f for portability");
649 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
651 # define expm1 rpl_expm1
653 _GL_FUNCDECL_RPL (expm1, double, (double x));
654 _GL_CXXALIAS_RPL (expm1, double, (double x));
657 _GL_FUNCDECL_SYS (expm1, double, (double x));
659 _GL_CXXALIAS_SYS (expm1, double, (double x));
661 _GL_CXXALIASWARN (expm1);
662 #elif defined GNULIB_POSIXCHECK
664 # if HAVE_RAW_DECL_EXPM1
665 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
666 "use gnulib module expm1 for portability");
671 # if !@HAVE_DECL_EXPM1L@
673 _GL_FUNCDECL_SYS (expm1l, long double, (long double x));
675 _GL_CXXALIAS_SYS (expm1l, long double, (long double x));
676 _GL_CXXALIASWARN (expm1l);
677 #elif defined GNULIB_POSIXCHECK
679 # if HAVE_RAW_DECL_EXPM1L
680 _GL_WARN_ON_USE (expm1l, "expm1l is unportable - "
681 "use gnulib module expm1l for portability");
689 _GL_FUNCDECL_SYS (fabsf, float, (float x));
691 _GL_CXXALIAS_SYS (fabsf, float, (float x));
692 _GL_CXXALIASWARN (fabsf);
693 #elif defined GNULIB_POSIXCHECK
695 # if HAVE_RAW_DECL_FABSF
696 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
697 "use gnulib module fabsf for portability");
703 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
705 # define fabsl rpl_fabsl
707 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
708 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
712 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
714 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
716 _GL_CXXALIASWARN (fabsl);
717 #elif defined GNULIB_POSIXCHECK
719 # if HAVE_RAW_DECL_FABSL
720 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
721 "use gnulib module fabsl for portability");
727 # if @REPLACE_FLOORF@
728 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
730 # define floorf rpl_floorf
732 _GL_FUNCDECL_RPL (floorf, float, (float x));
733 _GL_CXXALIAS_RPL (floorf, float, (float x));
735 # if !@HAVE_DECL_FLOORF@
737 _GL_FUNCDECL_SYS (floorf, float, (float x));
739 _GL_CXXALIAS_SYS (floorf, float, (float x));
741 _GL_CXXALIASWARN (floorf);
742 #elif defined GNULIB_POSIXCHECK
744 # if HAVE_RAW_DECL_FLOORF
745 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
746 "use gnulib module floorf for portability");
752 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
753 # define floor rpl_floor
755 _GL_FUNCDECL_RPL (floor, double, (double x));
756 _GL_CXXALIAS_RPL (floor, double, (double x));
758 _GL_CXXALIAS_SYS (floor, double, (double x));
760 _GL_CXXALIASWARN (floor);
764 # if @REPLACE_FLOORL@
765 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
767 # define floorl rpl_floorl
769 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
770 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
772 # if !@HAVE_DECL_FLOORL@
774 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
776 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
778 _GL_CXXALIASWARN (floorl);
779 #elif defined GNULIB_POSIXCHECK
781 # if HAVE_RAW_DECL_FLOORL
782 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
783 "use gnulib module floorl for portability");
790 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
792 # define fmaf rpl_fmaf
794 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
795 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
798 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
800 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
802 _GL_CXXALIASWARN (fmaf);
803 #elif defined GNULIB_POSIXCHECK
805 # if HAVE_RAW_DECL_FMAF
806 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
807 "use gnulib module fmaf for portability");
813 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
817 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
818 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
821 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
823 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
825 _GL_CXXALIASWARN (fma);
826 #elif defined GNULIB_POSIXCHECK
828 # if HAVE_RAW_DECL_FMA
829 _GL_WARN_ON_USE (fma, "fma is unportable - "
830 "use gnulib module fma for portability");
836 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
838 # define fmal rpl_fmal
840 _GL_FUNCDECL_RPL (fmal, long double,
841 (long double x, long double y, long double z));
842 _GL_CXXALIAS_RPL (fmal, long double,
843 (long double x, long double y, long double z));
847 _GL_FUNCDECL_SYS (fmal, long double,
848 (long double x, long double y, long double z));
850 _GL_CXXALIAS_SYS (fmal, long double,
851 (long double x, long double y, long double z));
853 _GL_CXXALIASWARN (fmal);
854 #elif defined GNULIB_POSIXCHECK
856 # if HAVE_RAW_DECL_FMAL
857 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
858 "use gnulib module fmal for portability");
865 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
867 # define fmodf rpl_fmodf
869 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
870 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
874 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
876 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
878 _GL_CXXALIASWARN (fmodf);
879 #elif defined GNULIB_POSIXCHECK
881 # if HAVE_RAW_DECL_FMODF
882 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
883 "use gnulib module fmodf for portability");
889 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
891 # define fmod rpl_fmod
893 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
894 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
896 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
898 _GL_CXXALIASWARN (fmod);
899 #elif defined GNULIB_POSIXCHECK
901 # if HAVE_RAW_DECL_FMOD
902 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
903 "use gnulib module fmod for portability");
909 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
911 # define fmodl rpl_fmodl
913 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
914 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
918 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
920 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
922 _GL_CXXALIASWARN (fmodl);
923 #elif defined GNULIB_POSIXCHECK
925 # if HAVE_RAW_DECL_FMODL
926 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
927 "use gnulib module fmodl for portability");
935 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
936 If x is zero: mantissa = x, exp = 0.
937 If x is infinite or NaN: mantissa = x, exp unspecified.
938 Store exp in *EXPPTR and return mantissa. */
940 # if @REPLACE_FREXPF@
941 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
943 # define frexpf rpl_frexpf
945 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
946 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
950 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
952 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
954 _GL_CXXALIASWARN (frexpf);
955 #elif defined GNULIB_POSIXCHECK
957 # if HAVE_RAW_DECL_FREXPF
958 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
959 "use gnulib module frexpf for portability");
966 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
967 If x is zero: mantissa = x, exp = 0.
968 If x is infinite or NaN: mantissa = x, exp unspecified.
969 Store exp in *EXPPTR and return mantissa. */
972 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
973 # define frexp rpl_frexp
975 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
976 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
978 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
980 _GL_CXXALIASWARN (frexp);
981 #elif defined GNULIB_POSIXCHECK
983 /* Assume frexp is always declared. */
984 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
985 "use gnulib module frexp for portability");
991 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
992 If x is zero: mantissa = x, exp = 0.
993 If x is infinite or NaN: mantissa = x, exp unspecified.
994 Store exp in *EXPPTR and return mantissa. */
995 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
996 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
998 # define frexpl rpl_frexpl
1000 _GL_FUNCDECL_RPL (frexpl, long double,
1001 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
1002 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
1004 # if !@HAVE_DECL_FREXPL@
1005 _GL_FUNCDECL_SYS (frexpl, long double,
1006 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
1008 # if @GNULIB_FREXPL@
1009 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
1012 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
1013 _GL_CXXALIASWARN (frexpl);
1015 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
1017 # if HAVE_RAW_DECL_FREXPL
1018 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
1019 "use gnulib module frexpl for portability");
1024 /* Return sqrt(x^2+y^2). */
1026 # if @REPLACE_HYPOTF@
1027 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1029 # define hypotf rpl_hypotf
1031 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
1032 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
1035 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
1037 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
1039 _GL_CXXALIASWARN (hypotf);
1040 #elif defined GNULIB_POSIXCHECK
1042 # if HAVE_RAW_DECL_HYPOTF
1043 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
1044 "use gnulib module hypotf for portability");
1048 /* Return sqrt(x^2+y^2). */
1050 # if @REPLACE_HYPOT@
1051 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1053 # define hypot rpl_hypot
1055 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
1056 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
1058 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
1060 _GL_CXXALIASWARN (hypot);
1061 #elif defined GNULIB_POSIXCHECK
1063 # if HAVE_RAW_DECL_HYPOT
1064 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
1065 "use gnulib module hypot for portability");
1069 /* Return sqrt(x^2+y^2). */
1071 # if @REPLACE_HYPOTL@
1072 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1074 # define hypotl rpl_hypotl
1076 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
1077 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
1080 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
1082 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
1084 _GL_CXXALIASWARN (hypotl);
1085 #elif defined GNULIB_POSIXCHECK
1087 # if HAVE_RAW_DECL_HYPOTL
1088 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
1089 "use gnulib module hypotl for portability");
1095 # if @REPLACE_ILOGBF@
1096 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1098 # define ilogbf rpl_ilogbf
1100 _GL_FUNCDECL_RPL (ilogbf, int, (float x));
1101 _GL_CXXALIAS_RPL (ilogbf, int, (float x));
1104 _GL_FUNCDECL_SYS (ilogbf, int, (float x));
1106 _GL_CXXALIAS_SYS (ilogbf, int, (float x));
1108 _GL_CXXALIASWARN (ilogbf);
1109 #elif defined GNULIB_POSIXCHECK
1111 # if HAVE_RAW_DECL_ILOGBF
1112 _GL_WARN_ON_USE (ilogbf, "ilogbf is unportable - "
1113 "use gnulib module ilogbf for portability");
1118 # if @REPLACE_ILOGB@
1119 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1121 # define ilogb rpl_ilogb
1123 _GL_FUNCDECL_RPL (ilogb, int, (double x));
1124 _GL_CXXALIAS_RPL (ilogb, int, (double x));
1127 _GL_FUNCDECL_SYS (ilogb, int, (double x));
1129 _GL_CXXALIAS_SYS (ilogb, int, (double x));
1131 _GL_CXXALIASWARN (ilogb);
1132 #elif defined GNULIB_POSIXCHECK
1134 # if HAVE_RAW_DECL_ILOGB
1135 _GL_WARN_ON_USE (ilogb, "ilogb is unportable - "
1136 "use gnulib module ilogb for portability");
1142 _GL_FUNCDECL_SYS (ilogbl, int, (long double x));
1144 _GL_CXXALIAS_SYS (ilogbl, int, (long double x));
1145 _GL_CXXALIASWARN (ilogbl);
1146 #elif defined GNULIB_POSIXCHECK
1148 # if HAVE_RAW_DECL_ILOGBL
1149 _GL_WARN_ON_USE (ilogbl, "ilogbl is unportable - "
1150 "use gnulib module ilogbl for portability");
1155 /* Return x * 2^exp. */
1159 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
1161 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
1162 _GL_CXXALIASWARN (ldexpf);
1163 #elif defined GNULIB_POSIXCHECK
1165 # if HAVE_RAW_DECL_LDEXPF
1166 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
1167 "use gnulib module ldexpf for portability");
1171 /* Return x * 2^exp. */
1172 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
1173 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1175 # define ldexpl rpl_ldexpl
1177 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
1178 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
1180 # if !@HAVE_DECL_LDEXPL@
1181 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
1183 # if @GNULIB_LDEXPL@
1184 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
1188 _GL_CXXALIASWARN (ldexpl);
1190 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
1192 # if HAVE_RAW_DECL_LDEXPL
1193 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
1194 "use gnulib module ldexpl for portability");
1201 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1203 # define logf rpl_logf
1205 _GL_FUNCDECL_RPL (logf, float, (float x));
1206 _GL_CXXALIAS_RPL (logf, float, (float x));
1210 _GL_FUNCDECL_SYS (logf, float, (float x));
1212 _GL_CXXALIAS_SYS (logf, float, (float x));
1214 _GL_CXXALIASWARN (logf);
1215 #elif defined GNULIB_POSIXCHECK
1217 # if HAVE_RAW_DECL_LOGF
1218 _GL_WARN_ON_USE (logf, "logf is unportable - "
1219 "use gnulib module logf for portability");
1225 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1227 # define log rpl_log
1229 _GL_FUNCDECL_RPL (log, double, (double x));
1230 _GL_CXXALIAS_RPL (log, double, (double x));
1232 _GL_CXXALIAS_SYS (log, double, (double x));
1234 _GL_CXXALIASWARN (log);
1235 #elif defined GNULIB_POSIXCHECK
1237 # if HAVE_RAW_DECL_LOG
1238 _GL_WARN_ON_USE (log, "log has portability problems - "
1239 "use gnulib module log for portability");
1245 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1247 # define logl rpl_logl
1249 _GL_FUNCDECL_RPL (logl, long double, (long double x));
1250 _GL_CXXALIAS_RPL (logl, long double, (long double x));
1252 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1254 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1256 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1258 _GL_CXXALIASWARN (logl);
1259 #elif defined GNULIB_POSIXCHECK
1261 # if HAVE_RAW_DECL_LOGL
1262 _GL_WARN_ON_USE (logl, "logl is unportable - "
1263 "use gnulib module logl for portability");
1269 # if @REPLACE_LOG10F@
1270 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1272 # define log10f rpl_log10f
1274 _GL_FUNCDECL_RPL (log10f, float, (float x));
1275 _GL_CXXALIAS_RPL (log10f, float, (float x));
1279 _GL_FUNCDECL_SYS (log10f, float, (float x));
1281 _GL_CXXALIAS_SYS (log10f, float, (float x));
1283 _GL_CXXALIASWARN (log10f);
1284 #elif defined GNULIB_POSIXCHECK
1286 # if HAVE_RAW_DECL_LOG10F
1287 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1288 "use gnulib module log10f for portability");
1293 # if @REPLACE_LOG10@
1294 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1296 # define log10 rpl_log10
1298 _GL_FUNCDECL_RPL (log10, double, (double x));
1299 _GL_CXXALIAS_RPL (log10, double, (double x));
1301 _GL_CXXALIAS_SYS (log10, double, (double x));
1303 _GL_CXXALIASWARN (log10);
1304 #elif defined GNULIB_POSIXCHECK
1306 # if HAVE_RAW_DECL_LOG10
1307 _GL_WARN_ON_USE (log10, "log10 has portability problems - "
1308 "use gnulib module log10 for portability");
1313 # if @REPLACE_LOG10L@
1314 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1316 # define log10l rpl_log10l
1318 _GL_FUNCDECL_RPL (log10l, long double, (long double x));
1319 _GL_CXXALIAS_RPL (log10l, long double, (long double x));
1321 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1323 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1325 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1327 _GL_CXXALIASWARN (log10l);
1328 #elif defined GNULIB_POSIXCHECK
1330 # if HAVE_RAW_DECL_LOG10L
1331 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1332 "use gnulib module log10l for portability");
1338 # if @REPLACE_LOG1PF@
1339 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1341 # define log1pf rpl_log1pf
1343 _GL_FUNCDECL_RPL (log1pf, float, (float x));
1344 _GL_CXXALIAS_RPL (log1pf, float, (float x));
1347 _GL_FUNCDECL_SYS (log1pf, float, (float x));
1349 _GL_CXXALIAS_SYS (log1pf, float, (float x));
1351 _GL_CXXALIASWARN (log1pf);
1352 #elif defined GNULIB_POSIXCHECK
1354 # if HAVE_RAW_DECL_LOG1PF
1355 _GL_WARN_ON_USE (log1pf, "log1pf is unportable - "
1356 "use gnulib module log1pf for portability");
1361 # if @REPLACE_LOG1P@
1362 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1364 # define log1p rpl_log1p
1366 _GL_FUNCDECL_RPL (log1p, double, (double x));
1367 _GL_CXXALIAS_RPL (log1p, double, (double x));
1370 _GL_FUNCDECL_SYS (log1p, double, (double x));
1372 _GL_CXXALIAS_SYS (log1p, double, (double x));
1374 _GL_CXXALIASWARN (log1p);
1375 #elif defined GNULIB_POSIXCHECK
1377 # if HAVE_RAW_DECL_LOG1P
1378 _GL_WARN_ON_USE (log1p, "log1p has portability problems - "
1379 "use gnulib module log1p for portability");
1384 # if @REPLACE_LOG1PL@
1385 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1387 # define log1pl rpl_log1pl
1389 _GL_FUNCDECL_RPL (log1pl, long double, (long double x));
1390 _GL_CXXALIAS_RPL (log1pl, long double, (long double x));
1393 _GL_FUNCDECL_SYS (log1pl, long double, (long double x));
1395 _GL_CXXALIAS_SYS (log1pl, long double, (long double x));
1397 _GL_CXXALIASWARN (log1pl);
1398 #elif defined GNULIB_POSIXCHECK
1400 # if HAVE_RAW_DECL_LOG1PL
1401 _GL_WARN_ON_USE (log1pl, "log1pl has portability problems - "
1402 "use gnulib module log1pl for portability");
1408 # if @REPLACE_LOG2F@
1409 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1411 # define log2f rpl_log2f
1413 _GL_FUNCDECL_RPL (log2f, float, (float x));
1414 _GL_CXXALIAS_RPL (log2f, float, (float x));
1416 # if !@HAVE_DECL_LOG2F@
1418 _GL_FUNCDECL_SYS (log2f, float, (float x));
1420 _GL_CXXALIAS_SYS (log2f, float, (float x));
1422 _GL_CXXALIASWARN (log2f);
1423 #elif defined GNULIB_POSIXCHECK
1425 # if HAVE_RAW_DECL_LOG2F
1426 _GL_WARN_ON_USE (log2f, "log2f is unportable - "
1427 "use gnulib module log2f for portability");
1433 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1435 # define log2 rpl_log2
1437 _GL_FUNCDECL_RPL (log2, double, (double x));
1438 _GL_CXXALIAS_RPL (log2, double, (double x));
1440 # if !@HAVE_DECL_LOG2@
1442 _GL_FUNCDECL_SYS (log2, double, (double x));
1444 _GL_CXXALIAS_SYS (log2, double, (double x));
1446 _GL_CXXALIASWARN (log2);
1447 #elif defined GNULIB_POSIXCHECK
1449 # if HAVE_RAW_DECL_LOG2
1450 _GL_WARN_ON_USE (log2, "log2 is unportable - "
1451 "use gnulib module log2 for portability");
1456 # if @REPLACE_LOG2L@
1457 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1459 # define log2l rpl_log2l
1461 _GL_FUNCDECL_RPL (log2l, long double, (long double x));
1462 _GL_CXXALIAS_RPL (log2l, long double, (long double x));
1464 # if !@HAVE_DECL_LOG2L@
1465 _GL_FUNCDECL_SYS (log2l, long double, (long double x));
1467 _GL_CXXALIAS_SYS (log2l, long double, (long double x));
1469 _GL_CXXALIASWARN (log2l);
1470 #elif defined GNULIB_POSIXCHECK
1472 # if HAVE_RAW_DECL_LOG2L
1473 _GL_WARN_ON_USE (log2l, "log2l is unportable - "
1474 "use gnulib module log2l for portability");
1480 # if @REPLACE_LOGBF@
1481 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1483 # define logbf rpl_logbf
1485 _GL_FUNCDECL_RPL (logbf, float, (float x));
1486 _GL_CXXALIAS_RPL (logbf, float, (float x));
1489 _GL_FUNCDECL_SYS (logbf, float, (float x));
1491 _GL_CXXALIAS_SYS (logbf, float, (float x));
1493 _GL_CXXALIASWARN (logbf);
1494 #elif defined GNULIB_POSIXCHECK
1496 # if HAVE_RAW_DECL_LOGBF
1497 _GL_WARN_ON_USE (logbf, "logbf is unportable - "
1498 "use gnulib module logbf for portability");
1504 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1506 # define logb rpl_logb
1508 _GL_FUNCDECL_RPL (logb, double, (double x));
1509 _GL_CXXALIAS_RPL (logb, double, (double x));
1511 # if !@HAVE_DECL_LOGB@
1512 _GL_FUNCDECL_SYS (logb, double, (double x));
1514 _GL_CXXALIAS_SYS (logb, double, (double x));
1516 _GL_CXXALIASWARN (logb);
1517 #elif defined GNULIB_POSIXCHECK
1519 # if HAVE_RAW_DECL_LOGB
1520 _GL_WARN_ON_USE (logb, "logb is unportable - "
1521 "use gnulib module logb for portability");
1526 # if @REPLACE_LOGBL@
1527 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1529 # define logbl rpl_logbl
1531 _GL_FUNCDECL_RPL (logbl, long double, (long double x));
1532 _GL_CXXALIAS_RPL (logbl, long double, (long double x));
1535 _GL_FUNCDECL_SYS (logbl, long double, (long double x));
1537 _GL_CXXALIAS_SYS (logbl, long double, (long double x));
1539 _GL_CXXALIASWARN (logbl);
1540 #elif defined GNULIB_POSIXCHECK
1542 # if HAVE_RAW_DECL_LOGBL
1543 _GL_WARN_ON_USE (logbl, "logbl is unportable - "
1544 "use gnulib module logbl for portability");
1550 # if @REPLACE_MODFF@
1551 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1553 # define modff rpl_modff
1555 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1556 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1560 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1562 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1564 _GL_CXXALIASWARN (modff);
1565 #elif defined GNULIB_POSIXCHECK
1567 # if HAVE_RAW_DECL_MODFF
1568 _GL_WARN_ON_USE (modff, "modff is unportable - "
1569 "use gnulib module modff for portability");
1575 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1577 # define modf rpl_modf
1579 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1580 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1582 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1584 _GL_CXXALIASWARN (modf);
1585 #elif defined GNULIB_POSIXCHECK
1587 # if HAVE_RAW_DECL_MODF
1588 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1589 "use gnulib module modf for portability");
1594 # if @REPLACE_MODFL@
1595 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1597 # define modfl rpl_modfl
1599 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1600 _GL_ARG_NONNULL ((2)));
1601 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1605 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1606 _GL_ARG_NONNULL ((2)));
1608 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1610 _GL_CXXALIASWARN (modfl);
1611 #elif defined GNULIB_POSIXCHECK
1613 # if HAVE_RAW_DECL_MODFL
1614 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1615 "use gnulib module modfl for portability");
1623 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1625 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1626 _GL_CXXALIASWARN (powf);
1627 #elif defined GNULIB_POSIXCHECK
1629 # if HAVE_RAW_DECL_POWF
1630 _GL_WARN_ON_USE (powf, "powf is unportable - "
1631 "use gnulib module powf for portability");
1636 #if @GNULIB_REMAINDERF@
1637 # if @REPLACE_REMAINDERF@
1638 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1640 # define remainderf rpl_remainderf
1642 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1643 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1645 # if !@HAVE_REMAINDERF@
1646 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1648 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1650 _GL_CXXALIASWARN (remainderf);
1651 #elif defined GNULIB_POSIXCHECK
1653 # if HAVE_RAW_DECL_REMAINDERF
1654 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1655 "use gnulib module remainderf for portability");
1659 #if @GNULIB_REMAINDER@
1660 # if @REPLACE_REMAINDER@
1661 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1663 # define remainder rpl_remainder
1665 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1666 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1668 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1669 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1671 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1673 _GL_CXXALIASWARN (remainder);
1674 #elif defined GNULIB_POSIXCHECK
1676 # if HAVE_RAW_DECL_REMAINDER
1677 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1678 "use gnulib module remainder for portability");
1682 #if @GNULIB_REMAINDERL@
1683 # if @REPLACE_REMAINDERL@
1684 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1686 # define remainderl rpl_remainderl
1688 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1689 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1691 # if !@HAVE_DECL_REMAINDERL@
1693 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1695 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1697 _GL_CXXALIASWARN (remainderl);
1698 #elif defined GNULIB_POSIXCHECK
1700 # if HAVE_RAW_DECL_REMAINDERL
1701 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1702 "use gnulib module remainderl for portability");
1708 # if !@HAVE_DECL_RINTF@
1709 _GL_FUNCDECL_SYS (rintf, float, (float x));
1711 _GL_CXXALIAS_SYS (rintf, float, (float x));
1712 _GL_CXXALIASWARN (rintf);
1713 #elif defined GNULIB_POSIXCHECK
1715 # if HAVE_RAW_DECL_RINTF
1716 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1717 "use gnulib module rintf for portability");
1723 _GL_FUNCDECL_SYS (rint, double, (double x));
1725 _GL_CXXALIAS_SYS (rint, double, (double x));
1726 _GL_CXXALIASWARN (rint);
1727 #elif defined GNULIB_POSIXCHECK
1729 # if HAVE_RAW_DECL_RINT
1730 _GL_WARN_ON_USE (rint, "rint is unportable - "
1731 "use gnulib module rint for portability");
1737 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1739 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1740 _GL_CXXALIASWARN (rintl);
1741 #elif defined GNULIB_POSIXCHECK
1743 # if HAVE_RAW_DECL_RINTL
1744 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1745 "use gnulib module rintl for portability");
1751 # if @REPLACE_ROUNDF@
1752 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1754 # define roundf rpl_roundf
1756 _GL_FUNCDECL_RPL (roundf, float, (float x));
1757 _GL_CXXALIAS_RPL (roundf, float, (float x));
1759 # if !@HAVE_DECL_ROUNDF@
1760 _GL_FUNCDECL_SYS (roundf, float, (float x));
1762 _GL_CXXALIAS_SYS (roundf, float, (float x));
1764 _GL_CXXALIASWARN (roundf);
1765 #elif defined GNULIB_POSIXCHECK
1767 # if HAVE_RAW_DECL_ROUNDF
1768 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1769 "use gnulib module roundf for portability");
1774 # if @REPLACE_ROUND@
1775 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1777 # define round rpl_round
1779 _GL_FUNCDECL_RPL (round, double, (double x));
1780 _GL_CXXALIAS_RPL (round, double, (double x));
1782 # if !@HAVE_DECL_ROUND@
1783 _GL_FUNCDECL_SYS (round, double, (double x));
1785 _GL_CXXALIAS_SYS (round, double, (double x));
1787 _GL_CXXALIASWARN (round);
1788 #elif defined GNULIB_POSIXCHECK
1790 # if HAVE_RAW_DECL_ROUND
1791 _GL_WARN_ON_USE (round, "round is unportable - "
1792 "use gnulib module round for portability");
1797 # if @REPLACE_ROUNDL@
1798 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1800 # define roundl rpl_roundl
1802 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1803 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1805 # if !@HAVE_DECL_ROUNDL@
1807 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1809 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1811 _GL_CXXALIASWARN (roundl);
1812 #elif defined GNULIB_POSIXCHECK
1814 # if HAVE_RAW_DECL_ROUNDL
1815 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1816 "use gnulib module roundl for portability");
1824 _GL_FUNCDECL_SYS (sinf, float, (float x));
1826 _GL_CXXALIAS_SYS (sinf, float, (float x));
1827 _GL_CXXALIASWARN (sinf);
1828 #elif defined GNULIB_POSIXCHECK
1830 # if HAVE_RAW_DECL_SINF
1831 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1832 "use gnulib module sinf for portability");
1837 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1839 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1841 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1842 _GL_CXXALIASWARN (sinl);
1843 #elif defined GNULIB_POSIXCHECK
1845 # if HAVE_RAW_DECL_SINL
1846 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1847 "use gnulib module sinl for portability");
1855 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1857 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1858 _GL_CXXALIASWARN (sinhf);
1859 #elif defined GNULIB_POSIXCHECK
1861 # if HAVE_RAW_DECL_SINHF
1862 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1863 "use gnulib module sinhf for portability");
1871 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1873 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1874 _GL_CXXALIASWARN (sqrtf);
1875 #elif defined GNULIB_POSIXCHECK
1877 # if HAVE_RAW_DECL_SQRTF
1878 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1879 "use gnulib module sqrtf for portability");
1884 # if @REPLACE_SQRTL@
1885 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1887 # define sqrtl rpl_sqrtl
1889 _GL_FUNCDECL_RPL (sqrtl, long double, (long double x));
1890 _GL_CXXALIAS_RPL (sqrtl, long double, (long double x));
1892 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1894 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1896 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1898 _GL_CXXALIASWARN (sqrtl);
1899 #elif defined GNULIB_POSIXCHECK
1901 # if HAVE_RAW_DECL_SQRTL
1902 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1903 "use gnulib module sqrtl for portability");
1911 _GL_FUNCDECL_SYS (tanf, float, (float x));
1913 _GL_CXXALIAS_SYS (tanf, float, (float x));
1914 _GL_CXXALIASWARN (tanf);
1915 #elif defined GNULIB_POSIXCHECK
1917 # if HAVE_RAW_DECL_TANF
1918 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1919 "use gnulib module tanf for portability");
1924 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1926 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1928 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1929 _GL_CXXALIASWARN (tanl);
1930 #elif defined GNULIB_POSIXCHECK
1932 # if HAVE_RAW_DECL_TANL
1933 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1934 "use gnulib module tanl for portability");
1942 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1944 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1945 _GL_CXXALIASWARN (tanhf);
1946 #elif defined GNULIB_POSIXCHECK
1948 # if HAVE_RAW_DECL_TANHF
1949 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1950 "use gnulib module tanhf for portability");
1956 # if @REPLACE_TRUNCF@
1957 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1958 # define truncf rpl_truncf
1960 _GL_FUNCDECL_RPL (truncf, float, (float x));
1961 _GL_CXXALIAS_RPL (truncf, float, (float x));
1963 # if !@HAVE_DECL_TRUNCF@
1964 _GL_FUNCDECL_SYS (truncf, float, (float x));
1966 _GL_CXXALIAS_SYS (truncf, float, (float x));
1968 _GL_CXXALIASWARN (truncf);
1969 #elif defined GNULIB_POSIXCHECK
1971 # if HAVE_RAW_DECL_TRUNCF
1972 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1973 "use gnulib module truncf for portability");
1978 # if @REPLACE_TRUNC@
1979 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1980 # define trunc rpl_trunc
1982 _GL_FUNCDECL_RPL (trunc, double, (double x));
1983 _GL_CXXALIAS_RPL (trunc, double, (double x));
1985 # if !@HAVE_DECL_TRUNC@
1986 _GL_FUNCDECL_SYS (trunc, double, (double x));
1988 _GL_CXXALIAS_SYS (trunc, double, (double x));
1990 _GL_CXXALIASWARN (trunc);
1991 #elif defined GNULIB_POSIXCHECK
1993 # if HAVE_RAW_DECL_TRUNC
1994 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1995 "use gnulib module trunc for portability");
2000 # if @REPLACE_TRUNCL@
2001 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
2003 # define truncl rpl_truncl
2005 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
2006 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
2008 # if !@HAVE_DECL_TRUNCL@
2009 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
2011 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
2013 _GL_CXXALIASWARN (truncl);
2014 #elif defined GNULIB_POSIXCHECK
2016 # if HAVE_RAW_DECL_TRUNCL
2017 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
2018 "use gnulib module truncl for portability");
2023 /* Definitions of function-like macros come here, after the function
2027 #if @GNULIB_ISFINITE@
2028 # if @REPLACE_ISFINITE@
2029 _GL_EXTERN_C int gl_isfinitef (float x);
2030 _GL_EXTERN_C int gl_isfinited (double x);
2031 _GL_EXTERN_C int gl_isfinitel (long double x);
2033 # define isfinite(x) \
2034 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
2035 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
2040 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
2042 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
2045 #elif defined GNULIB_POSIXCHECK
2046 # if defined isfinite
2047 _GL_WARN_REAL_FLOATING_DECL (isfinite);
2049 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
2055 # if @REPLACE_ISINF@
2056 _GL_EXTERN_C int gl_isinff (float x);
2057 _GL_EXTERN_C int gl_isinfd (double x);
2058 _GL_EXTERN_C int gl_isinfl (long double x);
2061 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
2062 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
2067 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
2069 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
2072 #elif defined GNULIB_POSIXCHECK
2074 _GL_WARN_REAL_FLOATING_DECL (isinf);
2076 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
2082 /* Test for NaN for 'float' numbers. */
2084 /* The original <math.h> included above provides a declaration of isnan macro
2085 or (older) isnanf function. */
2087 /* GCC 4.0 and newer provides three built-ins for isnan. */
2089 # define isnanf(x) __builtin_isnanf ((float)(x))
2090 # elif defined isnan
2092 # define isnanf(x) isnan ((float)(x))
2095 /* Test whether X is a NaN. */
2097 # define isnanf rpl_isnanf
2098 _GL_EXTERN_C int isnanf (float x);
2103 /* Test for NaN for 'double' numbers.
2104 This function is a gnulib extension, unlike isnan() which applied only
2105 to 'double' numbers earlier but now is a type-generic macro. */
2107 /* The original <math.h> included above provides a declaration of isnan
2110 /* GCC 4.0 and newer provides three built-ins for isnan. */
2112 # define isnand(x) __builtin_isnan ((double)(x))
2115 # define isnand(x) isnan ((double)(x))
2118 /* Test whether X is a NaN. */
2120 # define isnand rpl_isnand
2121 _GL_EXTERN_C int isnand (double x);
2126 /* Test for NaN for 'long double' numbers. */
2128 /* The original <math.h> included above provides a declaration of isnan
2129 macro or (older) isnanl function. */
2131 /* GCC 4.0 and newer provides three built-ins for isnan. */
2133 # define isnanl(x) __builtin_isnanl ((long double)(x))
2134 # elif defined isnan
2136 # define isnanl(x) isnan ((long double)(x))
2139 /* Test whether X is a NaN. */
2141 # define isnanl rpl_isnanl
2142 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
2146 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
2148 # if @REPLACE_ISNAN@
2149 /* We can't just use the isnanf macro (e.g.) as exposed by
2150 isnanf.h (e.g.) here, because those may end up being macros
2151 that recursively expand back to isnan. So use the gnulib
2152 replacements for them directly. */
2153 # if @HAVE_ISNANF@ && __GNUC__ >= 4
2154 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
2156 _GL_EXTERN_C int rpl_isnanf (float x);
2157 # define gl_isnan_f(x) rpl_isnanf (x)
2159 # if @HAVE_ISNAND@ && __GNUC__ >= 4
2160 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
2162 _GL_EXTERN_C int rpl_isnand (double x);
2163 # define gl_isnan_d(x) rpl_isnand (x)
2165 # if @HAVE_ISNANL@ && __GNUC__ >= 4
2166 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
2168 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
2169 # define gl_isnan_l(x) rpl_isnanl (x)
2173 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
2174 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
2176 # elif __GNUC__ >= 4
2179 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
2180 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
2181 __builtin_isnanf ((float)(x)))
2185 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
2187 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
2190 /* Ensure isnan is a macro. */
2192 # define isnan isnan
2195 #elif defined GNULIB_POSIXCHECK
2197 _GL_WARN_REAL_FLOATING_DECL (isnan);
2199 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
2204 #if @GNULIB_SIGNBIT@
2205 # if @REPLACE_SIGNBIT_USING_GCC@
2207 /* GCC 4.0 and newer provides three built-ins for signbit. */
2208 # define signbit(x) \
2209 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
2210 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
2211 __builtin_signbitf (x))
2213 # if @REPLACE_SIGNBIT@
2215 _GL_EXTERN_C int gl_signbitf (float arg);
2216 _GL_EXTERN_C int gl_signbitd (double arg);
2217 _GL_EXTERN_C int gl_signbitl (long double arg);
2218 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
2219 # define _GL_NUM_UINT_WORDS(type) \
2220 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
2221 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
2222 # define gl_signbitf_OPTIMIZED_MACRO
2223 # define gl_signbitf(arg) \
2224 ({ union { float _value; \
2225 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
2227 _m._value = (arg); \
2228 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
2231 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
2232 # define gl_signbitd_OPTIMIZED_MACRO
2233 # define gl_signbitd(arg) \
2234 ({ union { double _value; \
2235 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
2237 _m._value = (arg); \
2238 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
2241 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
2242 # define gl_signbitl_OPTIMIZED_MACRO
2243 # define gl_signbitl(arg) \
2244 ({ union { long double _value; \
2245 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
2247 _m._value = (arg); \
2248 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
2252 # define signbit(x) \
2253 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
2254 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
2259 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
2261 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
2264 #elif defined GNULIB_POSIXCHECK
2265 # if defined signbit
2266 _GL_WARN_REAL_FLOATING_DECL (signbit);
2268 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
2272 _GL_INLINE_HEADER_END
2274 #endif /* _@GUARD_PREFIX@_MATH_H */
2275 #endif /* _@GUARD_PREFIX@_MATH_H */