1 /* A GNU-like <math.h>.
3 Copyright (C) 2002-2003, 2007-2012 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #ifndef _@GUARD_PREFIX@_MATH_H
21 @PRAGMA_SYSTEM_HEADER@
25 /* The include_next requires a split double-inclusion guard. */
26 #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_MATH_H@
28 #ifndef _@GUARD_PREFIX@_MATH_H
29 #define _@GUARD_PREFIX@_MATH_H
32 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
34 /* The definition of _GL_ARG_NONNULL is copied here. */
36 /* The definition of _GL_WARN_ON_USE is copied here. */
39 /* Helper macros to define type-generic function FUNC as overloaded functions,
40 rather than as macros like in C. POSIX declares these with an argument of
41 real-floating (that is, one of float, double, or long double). */
42 # define _GL_MATH_CXX_REAL_FLOATING_DECL_1(func) \
44 _gl_cxx_ ## func ## f (float f) \
49 _gl_cxx_ ## func ## d (double d) \
54 _gl_cxx_ ## func ## l (long double l) \
58 # define _GL_MATH_CXX_REAL_FLOATING_DECL_2(func) \
62 return _gl_cxx_ ## func ## f (f); \
67 return _gl_cxx_ ## func ## d (d); \
70 func (long double l) \
72 return _gl_cxx_ ## func ## l (l); \
76 /* Helper macros to define a portability warning for the
77 classification macro FUNC called with VALUE. POSIX declares the
78 classification macros with an argument of real-floating (that is,
79 one of float, double, or long double). */
80 #define _GL_WARN_REAL_FLOATING_DECL(func) \
82 rpl_ ## func ## f (float f) \
87 rpl_ ## func ## d (double d) \
92 rpl_ ## func ## l (long double l) \
96 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \
97 "use gnulib module " #func " for portability"); \
98 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \
99 "use gnulib module " #func " for portability"); \
100 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \
101 "use gnulib module " #func " for portability")
102 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
103 (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \
104 : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \
105 : rpl_ ## func ## l (value))
109 /* Pull in a function that fixes the 'int' to 'long double' conversion
111 _GL_EXTERN_C void _Qp_itoq (long double *, int);
112 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
116 /* POSIX allows platforms that don't support NAN. But all major
117 machines in the past 15 years have supported something close to
118 IEEE NaN, so we define this unconditionally. We also must define
119 it on platforms like Solaris 10, where NAN is present but defined
120 as a function pointer rather than a floating point constant. */
121 #if !defined NAN || @REPLACE_NAN@
122 # if !GNULIB_defined_NAN
124 /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
125 choke on the expression 0.0 / 0.0. */
126 # if defined __DECC || defined _MSC_VER
130 static float zero = 0.0f;
133 # define NAN (_NaN())
135 # define NAN (0.0f / 0.0f)
137 # define GNULIB_defined_NAN 1
141 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
142 than a floating point constant. */
143 #if @REPLACE_HUGE_VAL@
145 # define HUGE_VALF (1.0f / 0.0f)
147 # define HUGE_VAL (1.0 / 0.0)
149 # define HUGE_VALL (1.0L / 0.0L)
152 /* HUGE_VALF is a 'float' Infinity. */
154 # if defined _MSC_VER
155 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0f / 0.0f. */
156 # define HUGE_VALF (1e25f * 1e25f)
158 # define HUGE_VALF (1.0f / 0.0f)
162 /* HUGE_VAL is a 'double' Infinity. */
164 # if defined _MSC_VER
165 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
166 # define HUGE_VAL (1e250 * 1e250)
168 # define HUGE_VAL (1.0 / 0.0)
172 /* HUGE_VALL is a 'long double' Infinity. */
174 # if defined _MSC_VER
175 /* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. */
176 # define HUGE_VALL (1e250L * 1e250L)
178 # define HUGE_VALL (1.0L / 0.0L)
185 _GL_FUNCDECL_SYS (acosf, float, (float x));
187 _GL_CXXALIAS_SYS (acosf, float, (float x));
188 _GL_CXXALIASWARN (acosf);
189 #elif defined GNULIB_POSIXCHECK
191 # if HAVE_RAW_DECL_ACOSF
192 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
193 "use gnulib module acosf for portability");
198 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
200 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
202 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
203 _GL_CXXALIASWARN (acosl);
204 #elif defined GNULIB_POSIXCHECK
206 # if HAVE_RAW_DECL_ACOSL
207 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
208 "use gnulib module acosl for portability");
216 _GL_FUNCDECL_SYS (asinf, float, (float x));
218 _GL_CXXALIAS_SYS (asinf, float, (float x));
219 _GL_CXXALIASWARN (asinf);
220 #elif defined GNULIB_POSIXCHECK
222 # if HAVE_RAW_DECL_ASINF
223 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
224 "use gnulib module asinf for portability");
229 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
231 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
233 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
234 _GL_CXXALIASWARN (asinl);
235 #elif defined GNULIB_POSIXCHECK
237 # if HAVE_RAW_DECL_ASINL
238 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
239 "use gnulib module asinl for portability");
247 _GL_FUNCDECL_SYS (atanf, float, (float x));
249 _GL_CXXALIAS_SYS (atanf, float, (float x));
250 _GL_CXXALIASWARN (atanf);
251 #elif defined GNULIB_POSIXCHECK
253 # if HAVE_RAW_DECL_ATANF
254 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
255 "use gnulib module atanf for portability");
260 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
262 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
264 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
265 _GL_CXXALIASWARN (atanl);
266 #elif defined GNULIB_POSIXCHECK
268 # if HAVE_RAW_DECL_ATANL
269 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
270 "use gnulib module atanl for portability");
278 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
280 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
281 _GL_CXXALIASWARN (atan2f);
282 #elif defined GNULIB_POSIXCHECK
284 # if HAVE_RAW_DECL_ATAN2F
285 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
286 "use gnulib module atan2f for portability");
293 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
295 # define cbrtf rpl_cbrtf
297 _GL_FUNCDECL_RPL (cbrtf, float, (float x));
298 _GL_CXXALIAS_RPL (cbrtf, float, (float x));
300 # if !@HAVE_DECL_CBRTF@
301 _GL_FUNCDECL_SYS (cbrtf, float, (float x));
303 _GL_CXXALIAS_SYS (cbrtf, float, (float x));
305 _GL_CXXALIASWARN (cbrtf);
306 #elif defined GNULIB_POSIXCHECK
308 # if HAVE_RAW_DECL_CBRTF
309 _GL_WARN_ON_USE (cbrtf, "cbrtf is unportable - "
310 "use gnulib module cbrtf for portability");
316 _GL_FUNCDECL_SYS (cbrt, double, (double x));
318 _GL_CXXALIAS_SYS (cbrt, double, (double x));
319 _GL_CXXALIASWARN (cbrt);
320 #elif defined GNULIB_POSIXCHECK
322 # if HAVE_RAW_DECL_CBRT
323 _GL_WARN_ON_USE (cbrt, "cbrt is unportable - "
324 "use gnulib module cbrt for portability");
330 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
332 # define cbrtl rpl_cbrtl
334 _GL_FUNCDECL_RPL (cbrtl, long double, (long double x));
335 _GL_CXXALIAS_RPL (cbrtl, long double, (long double x));
337 # if !@HAVE_DECL_CBRTL@
338 _GL_FUNCDECL_SYS (cbrtl, long double, (long double x));
340 _GL_CXXALIAS_SYS (cbrtl, long double, (long double x));
342 _GL_CXXALIASWARN (cbrtl);
343 #elif defined GNULIB_POSIXCHECK
345 # if HAVE_RAW_DECL_CBRTL
346 _GL_WARN_ON_USE (cbrtl, "cbrtl is unportable - "
347 "use gnulib module cbrtl for portability");
354 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
356 # define ceilf rpl_ceilf
358 _GL_FUNCDECL_RPL (ceilf, float, (float x));
359 _GL_CXXALIAS_RPL (ceilf, float, (float x));
361 # if !@HAVE_DECL_CEILF@
363 _GL_FUNCDECL_SYS (ceilf, float, (float x));
365 _GL_CXXALIAS_SYS (ceilf, float, (float x));
367 _GL_CXXALIASWARN (ceilf);
368 #elif defined GNULIB_POSIXCHECK
370 # if HAVE_RAW_DECL_CEILF
371 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
372 "use gnulib module ceilf for portability");
378 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
379 # define ceil rpl_ceil
381 _GL_FUNCDECL_RPL (ceil, double, (double x));
382 _GL_CXXALIAS_RPL (ceil, double, (double x));
384 _GL_CXXALIAS_SYS (ceil, double, (double x));
386 _GL_CXXALIASWARN (ceil);
391 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
393 # define ceill rpl_ceill
395 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
396 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
398 # if !@HAVE_DECL_CEILL@
400 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
402 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
404 _GL_CXXALIASWARN (ceill);
405 #elif defined GNULIB_POSIXCHECK
407 # if HAVE_RAW_DECL_CEILL
408 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
409 "use gnulib module ceill for portability");
414 #if @GNULIB_COPYSIGNF@
415 # if !@HAVE_DECL_COPYSIGNF@
416 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
418 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
419 _GL_CXXALIASWARN (copysignf);
420 #elif defined GNULIB_POSIXCHECK
422 # if HAVE_RAW_DECL_COPYSIGNF
423 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
424 "use gnulib module copysignf for portability");
428 #if @GNULIB_COPYSIGN@
429 # if !@HAVE_COPYSIGN@
430 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
432 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
433 _GL_CXXALIASWARN (copysign);
434 #elif defined GNULIB_POSIXCHECK
436 # if HAVE_RAW_DECL_COPYSIGN
437 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
438 "use gnulib module copysign for portability");
442 #if @GNULIB_COPYSIGNL@
443 # if !@HAVE_COPYSIGNL@
444 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
446 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
447 _GL_CXXALIASWARN (copysignl);
448 #elif defined GNULIB_POSIXCHECK
450 # if HAVE_RAW_DECL_COPYSIGNL
451 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
452 "use gnulib module copysignl for portability");
460 _GL_FUNCDECL_SYS (cosf, float, (float x));
462 _GL_CXXALIAS_SYS (cosf, float, (float x));
463 _GL_CXXALIASWARN (cosf);
464 #elif defined GNULIB_POSIXCHECK
466 # if HAVE_RAW_DECL_COSF
467 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
468 "use gnulib module cosf for portability");
473 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
475 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
477 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
478 _GL_CXXALIASWARN (cosl);
479 #elif defined GNULIB_POSIXCHECK
481 # if HAVE_RAW_DECL_COSL
482 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
483 "use gnulib module cosl for portability");
491 _GL_FUNCDECL_SYS (coshf, float, (float x));
493 _GL_CXXALIAS_SYS (coshf, float, (float x));
494 _GL_CXXALIASWARN (coshf);
495 #elif defined GNULIB_POSIXCHECK
497 # if HAVE_RAW_DECL_COSHF
498 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
499 "use gnulib module coshf for portability");
507 _GL_FUNCDECL_SYS (expf, float, (float x));
509 _GL_CXXALIAS_SYS (expf, float, (float x));
510 _GL_CXXALIASWARN (expf);
511 #elif defined GNULIB_POSIXCHECK
513 # if HAVE_RAW_DECL_EXPF
514 _GL_WARN_ON_USE (expf, "expf is unportable - "
515 "use gnulib module expf for portability");
520 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
522 _GL_FUNCDECL_SYS (expl, long double, (long double x));
524 _GL_CXXALIAS_SYS (expl, long double, (long double x));
525 _GL_CXXALIASWARN (expl);
526 #elif defined GNULIB_POSIXCHECK
528 # if HAVE_RAW_DECL_EXPL
529 _GL_WARN_ON_USE (expl, "expl is unportable - "
530 "use gnulib module expl for portability");
536 # if @REPLACE_EXPM1F@
537 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
539 # define expm1f rpl_expm1f
541 _GL_FUNCDECL_RPL (expm1f, float, (float x));
542 _GL_CXXALIAS_RPL (expm1f, float, (float x));
545 _GL_FUNCDECL_SYS (expm1f, float, (float x));
547 _GL_CXXALIAS_SYS (expm1f, float, (float x));
549 _GL_CXXALIASWARN (expm1f);
550 #elif defined GNULIB_POSIXCHECK
552 # if HAVE_RAW_DECL_EXPM1F
553 _GL_WARN_ON_USE (expm1f, "expm1f is unportable - "
554 "use gnulib module expm1f for portability");
560 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
562 # define expm1 rpl_expm1
564 _GL_FUNCDECL_RPL (expm1, double, (double x));
565 _GL_CXXALIAS_RPL (expm1, double, (double x));
568 _GL_FUNCDECL_SYS (expm1, double, (double x));
570 _GL_CXXALIAS_SYS (expm1, double, (double x));
572 _GL_CXXALIASWARN (expm1);
573 #elif defined GNULIB_POSIXCHECK
575 # if HAVE_RAW_DECL_EXPM1
576 _GL_WARN_ON_USE (expm1, "expm1 is unportable - "
577 "use gnulib module expm1 for portability");
582 # if !@HAVE_DECL_EXPM1L@
584 _GL_FUNCDECL_SYS (expm1l, long double, (long double x));
586 _GL_CXXALIAS_SYS (expm1l, long double, (long double x));
587 _GL_CXXALIASWARN (expm1l);
588 #elif defined GNULIB_POSIXCHECK
590 # if HAVE_RAW_DECL_EXPM1L
591 _GL_WARN_ON_USE (expm1l, "expm1l is unportable - "
592 "use gnulib module expm1l for portability");
600 _GL_FUNCDECL_SYS (fabsf, float, (float x));
602 _GL_CXXALIAS_SYS (fabsf, float, (float x));
603 _GL_CXXALIASWARN (fabsf);
604 #elif defined GNULIB_POSIXCHECK
606 # if HAVE_RAW_DECL_FABSF
607 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
608 "use gnulib module fabsf for portability");
614 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
616 # define fabsl rpl_fabsl
618 _GL_FUNCDECL_RPL (fabsl, long double, (long double x));
619 _GL_CXXALIAS_RPL (fabsl, long double, (long double x));
623 _GL_FUNCDECL_SYS (fabsl, long double, (long double x));
625 _GL_CXXALIAS_SYS (fabsl, long double, (long double x));
627 _GL_CXXALIASWARN (fabsl);
628 #elif defined GNULIB_POSIXCHECK
630 # if HAVE_RAW_DECL_FABSL
631 _GL_WARN_ON_USE (fabsl, "fabsl is unportable - "
632 "use gnulib module fabsl for portability");
638 # if @REPLACE_FLOORF@
639 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
641 # define floorf rpl_floorf
643 _GL_FUNCDECL_RPL (floorf, float, (float x));
644 _GL_CXXALIAS_RPL (floorf, float, (float x));
646 # if !@HAVE_DECL_FLOORF@
648 _GL_FUNCDECL_SYS (floorf, float, (float x));
650 _GL_CXXALIAS_SYS (floorf, float, (float x));
652 _GL_CXXALIASWARN (floorf);
653 #elif defined GNULIB_POSIXCHECK
655 # if HAVE_RAW_DECL_FLOORF
656 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
657 "use gnulib module floorf for portability");
663 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
664 # define floor rpl_floor
666 _GL_FUNCDECL_RPL (floor, double, (double x));
667 _GL_CXXALIAS_RPL (floor, double, (double x));
669 _GL_CXXALIAS_SYS (floor, double, (double x));
671 _GL_CXXALIASWARN (floor);
675 # if @REPLACE_FLOORL@
676 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
678 # define floorl rpl_floorl
680 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
681 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
683 # if !@HAVE_DECL_FLOORL@
685 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
687 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
689 _GL_CXXALIASWARN (floorl);
690 #elif defined GNULIB_POSIXCHECK
692 # if HAVE_RAW_DECL_FLOORL
693 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
694 "use gnulib module floorl for portability");
701 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
703 # define fmaf rpl_fmaf
705 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
706 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
709 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
711 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
713 _GL_CXXALIASWARN (fmaf);
714 #elif defined GNULIB_POSIXCHECK
716 # if HAVE_RAW_DECL_FMAF
717 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
718 "use gnulib module fmaf for portability");
724 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
728 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
729 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
732 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
734 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
736 _GL_CXXALIASWARN (fma);
737 #elif defined GNULIB_POSIXCHECK
739 # if HAVE_RAW_DECL_FMA
740 _GL_WARN_ON_USE (fma, "fma is unportable - "
741 "use gnulib module fma for portability");
747 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
749 # define fmal rpl_fmal
751 _GL_FUNCDECL_RPL (fmal, long double,
752 (long double x, long double y, long double z));
753 _GL_CXXALIAS_RPL (fmal, long double,
754 (long double x, long double y, long double z));
758 _GL_FUNCDECL_SYS (fmal, long double,
759 (long double x, long double y, long double z));
761 _GL_CXXALIAS_SYS (fmal, long double,
762 (long double x, long double y, long double z));
764 _GL_CXXALIASWARN (fmal);
765 #elif defined GNULIB_POSIXCHECK
767 # if HAVE_RAW_DECL_FMAL
768 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
769 "use gnulib module fmal for portability");
776 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
778 # define fmodf rpl_fmodf
780 _GL_FUNCDECL_RPL (fmodf, float, (float x, float y));
781 _GL_CXXALIAS_RPL (fmodf, float, (float x, float y));
785 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
787 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
789 _GL_CXXALIASWARN (fmodf);
790 #elif defined GNULIB_POSIXCHECK
792 # if HAVE_RAW_DECL_FMODF
793 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
794 "use gnulib module fmodf for portability");
800 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
802 # define fmod rpl_fmod
804 _GL_FUNCDECL_RPL (fmod, double, (double x, double y));
805 _GL_CXXALIAS_RPL (fmod, double, (double x, double y));
807 _GL_CXXALIAS_SYS (fmod, double, (double x, double y));
809 _GL_CXXALIASWARN (fmod);
810 #elif defined GNULIB_POSIXCHECK
812 # if HAVE_RAW_DECL_FMOD
813 _GL_WARN_ON_USE (fmod, "fmod has portability problems - "
814 "use gnulib module fmod for portability");
820 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
822 # define fmodl rpl_fmodl
824 _GL_FUNCDECL_RPL (fmodl, long double, (long double x, long double y));
825 _GL_CXXALIAS_RPL (fmodl, long double, (long double x, long double y));
829 _GL_FUNCDECL_SYS (fmodl, long double, (long double x, long double y));
831 _GL_CXXALIAS_SYS (fmodl, long double, (long double x, long double y));
833 _GL_CXXALIASWARN (fmodl);
834 #elif defined GNULIB_POSIXCHECK
836 # if HAVE_RAW_DECL_FMODL
837 _GL_WARN_ON_USE (fmodl, "fmodl is unportable - "
838 "use gnulib module fmodl for portability");
846 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
847 If x is zero: mantissa = x, exp = 0.
848 If x is infinite or NaN: mantissa = x, exp unspecified.
849 Store exp in *EXPPTR and return mantissa. */
851 # if @REPLACE_FREXPF@
852 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
854 # define frexpf rpl_frexpf
856 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
857 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
861 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
863 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
865 _GL_CXXALIASWARN (frexpf);
866 #elif defined GNULIB_POSIXCHECK
868 # if HAVE_RAW_DECL_FREXPF
869 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
870 "use gnulib module frexpf for portability");
877 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
878 If x is zero: mantissa = x, exp = 0.
879 If x is infinite or NaN: mantissa = x, exp unspecified.
880 Store exp in *EXPPTR and return mantissa. */
883 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
884 # define frexp rpl_frexp
886 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
887 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
889 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
891 _GL_CXXALIASWARN (frexp);
892 #elif defined GNULIB_POSIXCHECK
894 /* Assume frexp is always declared. */
895 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
896 "use gnulib module frexp for portability");
902 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
903 If x is zero: mantissa = x, exp = 0.
904 If x is infinite or NaN: mantissa = x, exp unspecified.
905 Store exp in *EXPPTR and return mantissa. */
906 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
907 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
909 # define frexpl rpl_frexpl
911 _GL_FUNCDECL_RPL (frexpl, long double,
912 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
913 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
915 # if !@HAVE_DECL_FREXPL@
916 _GL_FUNCDECL_SYS (frexpl, long double,
917 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
920 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
923 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
924 _GL_CXXALIASWARN (frexpl);
926 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
928 # if HAVE_RAW_DECL_FREXPL
929 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
930 "use gnulib module frexpl for portability");
935 /* Return sqrt(x^2+y^2). */
937 # if @REPLACE_HYPOTF@
938 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
940 # define hypotf rpl_hypotf
942 _GL_FUNCDECL_RPL (hypotf, float, (float x, float y));
943 _GL_CXXALIAS_RPL (hypotf, float, (float x, float y));
946 _GL_FUNCDECL_SYS (hypotf, float, (float x, float y));
948 _GL_CXXALIAS_SYS (hypotf, float, (float x, float y));
950 _GL_CXXALIASWARN (hypotf);
951 #elif defined GNULIB_POSIXCHECK
953 # if HAVE_RAW_DECL_HYPOTF
954 _GL_WARN_ON_USE (hypotf, "hypotf is unportable - "
955 "use gnulib module hypotf for portability");
959 /* Return sqrt(x^2+y^2). */
962 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
964 # define hypot rpl_hypot
966 _GL_FUNCDECL_RPL (hypot, double, (double x, double y));
967 _GL_CXXALIAS_RPL (hypot, double, (double x, double y));
969 _GL_CXXALIAS_SYS (hypot, double, (double x, double y));
971 _GL_CXXALIASWARN (hypot);
972 #elif defined GNULIB_POSIXCHECK
974 # if HAVE_RAW_DECL_HYPOT
975 _GL_WARN_ON_USE (hypotf, "hypot has portability problems - "
976 "use gnulib module hypot for portability");
980 /* Return sqrt(x^2+y^2). */
982 # if @REPLACE_HYPOTL@
983 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
985 # define hypotl rpl_hypotl
987 _GL_FUNCDECL_RPL (hypotl, long double, (long double x, long double y));
988 _GL_CXXALIAS_RPL (hypotl, long double, (long double x, long double y));
991 _GL_FUNCDECL_SYS (hypotl, long double, (long double x, long double y));
993 _GL_CXXALIAS_SYS (hypotl, long double, (long double x, long double y));
995 _GL_CXXALIASWARN (hypotl);
996 #elif defined GNULIB_POSIXCHECK
998 # if HAVE_RAW_DECL_HYPOTL
999 _GL_WARN_ON_USE (hypotl, "hypotl is unportable - "
1000 "use gnulib module hypotl for portability");
1005 /* Return x * 2^exp. */
1009 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
1011 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
1012 _GL_CXXALIASWARN (ldexpf);
1013 #elif defined GNULIB_POSIXCHECK
1015 # if HAVE_RAW_DECL_LDEXPF
1016 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
1017 "use gnulib module ldexpf for portability");
1021 /* Return x * 2^exp. */
1022 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
1023 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1025 # define ldexpl rpl_ldexpl
1027 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
1028 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
1030 # if !@HAVE_DECL_LDEXPL@
1031 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
1033 # if @GNULIB_LDEXPL@
1034 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
1038 _GL_CXXALIASWARN (ldexpl);
1040 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
1042 # if HAVE_RAW_DECL_LDEXPL
1043 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
1044 "use gnulib module ldexpl for portability");
1050 # if !@HAVE_DECL_LOGB@
1051 _GL_EXTERN_C double logb (double x);
1053 #elif defined GNULIB_POSIXCHECK
1055 # if HAVE_RAW_DECL_LOGB
1056 _GL_WARN_ON_USE (logb, "logb is unportable - "
1057 "use gnulib module logb for portability");
1065 _GL_FUNCDECL_SYS (logf, float, (float x));
1067 _GL_CXXALIAS_SYS (logf, float, (float x));
1068 _GL_CXXALIASWARN (logf);
1069 #elif defined GNULIB_POSIXCHECK
1071 # if HAVE_RAW_DECL_LOGF
1072 _GL_WARN_ON_USE (logf, "logf is unportable - "
1073 "use gnulib module logf for portability");
1078 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
1080 _GL_FUNCDECL_SYS (logl, long double, (long double x));
1082 _GL_CXXALIAS_SYS (logl, long double, (long double x));
1083 _GL_CXXALIASWARN (logl);
1084 #elif defined GNULIB_POSIXCHECK
1086 # if HAVE_RAW_DECL_LOGL
1087 _GL_WARN_ON_USE (logl, "logl is unportable - "
1088 "use gnulib module logl for portability");
1096 _GL_FUNCDECL_SYS (log10f, float, (float x));
1098 _GL_CXXALIAS_SYS (log10f, float, (float x));
1099 _GL_CXXALIASWARN (log10f);
1100 #elif defined GNULIB_POSIXCHECK
1102 # if HAVE_RAW_DECL_LOG10F
1103 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
1104 "use gnulib module log10f for portability");
1109 # if !@HAVE_LOG10L@ || !@HAVE_DECL_LOG10L@
1111 _GL_FUNCDECL_SYS (log10l, long double, (long double x));
1113 _GL_CXXALIAS_SYS (log10l, long double, (long double x));
1114 _GL_CXXALIASWARN (log10l);
1115 #elif defined GNULIB_POSIXCHECK
1117 # if HAVE_RAW_DECL_LOG10L
1118 _GL_WARN_ON_USE (log10l, "log10l is unportable - "
1119 "use gnulib module log10l for portability");
1125 # if @REPLACE_MODFF@
1126 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1128 # define modff rpl_modff
1130 _GL_FUNCDECL_RPL (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1131 _GL_CXXALIAS_RPL (modff, float, (float x, float *iptr));
1135 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
1137 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
1139 _GL_CXXALIASWARN (modff);
1140 #elif defined GNULIB_POSIXCHECK
1142 # if HAVE_RAW_DECL_MODFF
1143 _GL_WARN_ON_USE (modff, "modff is unportable - "
1144 "use gnulib module modff for portability");
1150 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1152 # define modf rpl_modf
1154 _GL_FUNCDECL_RPL (modf, double, (double x, double *iptr) _GL_ARG_NONNULL ((2)));
1155 _GL_CXXALIAS_RPL (modf, double, (double x, double *iptr));
1157 _GL_CXXALIAS_SYS (modf, double, (double x, double *iptr));
1159 _GL_CXXALIASWARN (modf);
1160 #elif defined GNULIB_POSIXCHECK
1162 # if HAVE_RAW_DECL_MODF
1163 _GL_WARN_ON_USE (modf, "modf has portability problems - "
1164 "use gnulib module modf for portability");
1169 # if @REPLACE_MODFL@
1170 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1172 # define modfl rpl_modfl
1174 _GL_FUNCDECL_RPL (modfl, long double, (long double x, long double *iptr)
1175 _GL_ARG_NONNULL ((2)));
1176 _GL_CXXALIAS_RPL (modfl, long double, (long double x, long double *iptr));
1180 _GL_FUNCDECL_SYS (modfl, long double, (long double x, long double *iptr)
1181 _GL_ARG_NONNULL ((2)));
1183 _GL_CXXALIAS_SYS (modfl, long double, (long double x, long double *iptr));
1185 _GL_CXXALIASWARN (modfl);
1186 #elif defined GNULIB_POSIXCHECK
1188 # if HAVE_RAW_DECL_MODFL
1189 _GL_WARN_ON_USE (modfl, "modfl is unportable - "
1190 "use gnulib module modfl for portability");
1198 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
1200 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
1201 _GL_CXXALIASWARN (powf);
1202 #elif defined GNULIB_POSIXCHECK
1204 # if HAVE_RAW_DECL_POWF
1205 _GL_WARN_ON_USE (powf, "powf is unportable - "
1206 "use gnulib module powf for portability");
1211 #if @GNULIB_REMAINDERF@
1212 # if @REPLACE_REMAINDERF@
1213 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1215 # define remainderf rpl_remainderf
1217 _GL_FUNCDECL_RPL (remainderf, float, (float x, float y));
1218 _GL_CXXALIAS_RPL (remainderf, float, (float x, float y));
1220 # if !@HAVE_REMAINDERF@
1221 _GL_FUNCDECL_SYS (remainderf, float, (float x, float y));
1223 _GL_CXXALIAS_SYS (remainderf, float, (float x, float y));
1225 _GL_CXXALIASWARN (remainderf);
1226 #elif defined GNULIB_POSIXCHECK
1228 # if HAVE_RAW_DECL_REMAINDERF
1229 _GL_WARN_ON_USE (remainderf, "remainderf is unportable - "
1230 "use gnulib module remainderf for portability");
1234 #if @GNULIB_REMAINDER@
1235 # if @REPLACE_REMAINDER@
1236 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1238 # define remainder rpl_remainder
1240 _GL_FUNCDECL_RPL (remainder, double, (double x, double y));
1241 _GL_CXXALIAS_RPL (remainder, double, (double x, double y));
1243 # if !@HAVE_REMAINDER@ || !@HAVE_DECL_REMAINDER@
1244 _GL_FUNCDECL_SYS (remainder, double, (double x, double y));
1246 _GL_CXXALIAS_SYS (remainder, double, (double x, double y));
1248 _GL_CXXALIASWARN (remainder);
1249 #elif defined GNULIB_POSIXCHECK
1251 # if HAVE_RAW_DECL_REMAINDER
1252 _GL_WARN_ON_USE (remainder, "remainder is unportable - "
1253 "use gnulib module remainder for portability");
1257 #if @GNULIB_REMAINDERL@
1258 # if @REPLACE_REMAINDERL@
1259 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1261 # define remainderl rpl_remainderl
1263 _GL_FUNCDECL_RPL (remainderl, long double, (long double x, long double y));
1264 _GL_CXXALIAS_RPL (remainderl, long double, (long double x, long double y));
1266 # if !@HAVE_DECL_REMAINDERL@
1267 _GL_FUNCDECL_SYS (remainderl, long double, (long double x, long double y));
1269 _GL_CXXALIAS_SYS (remainderl, long double, (long double x, long double y));
1271 _GL_CXXALIASWARN (remainderl);
1272 #elif defined GNULIB_POSIXCHECK
1274 # if HAVE_RAW_DECL_REMAINDERL
1275 _GL_WARN_ON_USE (remainderl, "remainderl is unportable - "
1276 "use gnulib module remainderl for portability");
1282 # if !@HAVE_DECL_RINTF@
1283 _GL_FUNCDECL_SYS (rintf, float, (float x));
1285 _GL_CXXALIAS_SYS (rintf, float, (float x));
1286 _GL_CXXALIASWARN (rintf);
1287 #elif defined GNULIB_POSIXCHECK
1289 # if HAVE_RAW_DECL_RINTF
1290 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
1291 "use gnulib module rintf for portability");
1297 _GL_FUNCDECL_SYS (rint, double, (double x));
1299 _GL_CXXALIAS_SYS (rint, double, (double x));
1300 _GL_CXXALIASWARN (rint);
1301 #elif defined GNULIB_POSIXCHECK
1303 # if HAVE_RAW_DECL_RINT
1304 _GL_WARN_ON_USE (rint, "rint is unportable - "
1305 "use gnulib module rint for portability");
1311 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
1313 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
1314 _GL_CXXALIASWARN (rintl);
1315 #elif defined GNULIB_POSIXCHECK
1317 # if HAVE_RAW_DECL_RINTL
1318 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
1319 "use gnulib module rintl for portability");
1325 # if @REPLACE_ROUNDF@
1326 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1328 # define roundf rpl_roundf
1330 _GL_FUNCDECL_RPL (roundf, float, (float x));
1331 _GL_CXXALIAS_RPL (roundf, float, (float x));
1333 # if !@HAVE_DECL_ROUNDF@
1334 _GL_FUNCDECL_SYS (roundf, float, (float x));
1336 _GL_CXXALIAS_SYS (roundf, float, (float x));
1338 _GL_CXXALIASWARN (roundf);
1339 #elif defined GNULIB_POSIXCHECK
1341 # if HAVE_RAW_DECL_ROUNDF
1342 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
1343 "use gnulib module roundf for portability");
1348 # if @REPLACE_ROUND@
1349 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1351 # define round rpl_round
1353 _GL_FUNCDECL_RPL (round, double, (double x));
1354 _GL_CXXALIAS_RPL (round, double, (double x));
1356 # if !@HAVE_DECL_ROUND@
1357 _GL_FUNCDECL_SYS (round, double, (double x));
1359 _GL_CXXALIAS_SYS (round, double, (double x));
1361 _GL_CXXALIASWARN (round);
1362 #elif defined GNULIB_POSIXCHECK
1364 # if HAVE_RAW_DECL_ROUND
1365 _GL_WARN_ON_USE (round, "round is unportable - "
1366 "use gnulib module round for portability");
1371 # if @REPLACE_ROUNDL@
1372 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1374 # define roundl rpl_roundl
1376 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
1377 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
1379 # if !@HAVE_DECL_ROUNDL@
1381 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
1383 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
1385 _GL_CXXALIASWARN (roundl);
1386 #elif defined GNULIB_POSIXCHECK
1388 # if HAVE_RAW_DECL_ROUNDL
1389 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
1390 "use gnulib module roundl for portability");
1398 _GL_FUNCDECL_SYS (sinf, float, (float x));
1400 _GL_CXXALIAS_SYS (sinf, float, (float x));
1401 _GL_CXXALIASWARN (sinf);
1402 #elif defined GNULIB_POSIXCHECK
1404 # if HAVE_RAW_DECL_SINF
1405 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
1406 "use gnulib module sinf for portability");
1411 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
1413 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
1415 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
1416 _GL_CXXALIASWARN (sinl);
1417 #elif defined GNULIB_POSIXCHECK
1419 # if HAVE_RAW_DECL_SINL
1420 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
1421 "use gnulib module sinl for portability");
1429 _GL_FUNCDECL_SYS (sinhf, float, (float x));
1431 _GL_CXXALIAS_SYS (sinhf, float, (float x));
1432 _GL_CXXALIASWARN (sinhf);
1433 #elif defined GNULIB_POSIXCHECK
1435 # if HAVE_RAW_DECL_SINHF
1436 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
1437 "use gnulib module sinhf for portability");
1445 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1447 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1448 _GL_CXXALIASWARN (sqrtf);
1449 #elif defined GNULIB_POSIXCHECK
1451 # if HAVE_RAW_DECL_SQRTF
1452 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1453 "use gnulib module sqrtf for portability");
1458 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1460 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1462 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1463 _GL_CXXALIASWARN (sqrtl);
1464 #elif defined GNULIB_POSIXCHECK
1466 # if HAVE_RAW_DECL_SQRTL
1467 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1468 "use gnulib module sqrtl for portability");
1476 _GL_FUNCDECL_SYS (tanf, float, (float x));
1478 _GL_CXXALIAS_SYS (tanf, float, (float x));
1479 _GL_CXXALIASWARN (tanf);
1480 #elif defined GNULIB_POSIXCHECK
1482 # if HAVE_RAW_DECL_TANF
1483 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1484 "use gnulib module tanf for portability");
1489 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1491 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1493 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1494 _GL_CXXALIASWARN (tanl);
1495 #elif defined GNULIB_POSIXCHECK
1497 # if HAVE_RAW_DECL_TANL
1498 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1499 "use gnulib module tanl for portability");
1507 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1509 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1510 _GL_CXXALIASWARN (tanhf);
1511 #elif defined GNULIB_POSIXCHECK
1513 # if HAVE_RAW_DECL_TANHF
1514 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1515 "use gnulib module tanhf for portability");
1521 # if @REPLACE_TRUNCF@
1522 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1523 # define truncf rpl_truncf
1525 _GL_FUNCDECL_RPL (truncf, float, (float x));
1526 _GL_CXXALIAS_RPL (truncf, float, (float x));
1528 # if !@HAVE_DECL_TRUNCF@
1529 _GL_FUNCDECL_SYS (truncf, float, (float x));
1531 _GL_CXXALIAS_SYS (truncf, float, (float x));
1533 _GL_CXXALIASWARN (truncf);
1534 #elif defined GNULIB_POSIXCHECK
1536 # if HAVE_RAW_DECL_TRUNCF
1537 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1538 "use gnulib module truncf for portability");
1543 # if @REPLACE_TRUNC@
1544 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1545 # define trunc rpl_trunc
1547 _GL_FUNCDECL_RPL (trunc, double, (double x));
1548 _GL_CXXALIAS_RPL (trunc, double, (double x));
1550 # if !@HAVE_DECL_TRUNC@
1551 _GL_FUNCDECL_SYS (trunc, double, (double x));
1553 _GL_CXXALIAS_SYS (trunc, double, (double x));
1555 _GL_CXXALIASWARN (trunc);
1556 #elif defined GNULIB_POSIXCHECK
1558 # if HAVE_RAW_DECL_TRUNC
1559 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1560 "use gnulib module trunc for portability");
1565 # if @REPLACE_TRUNCL@
1566 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1568 # define truncl rpl_truncl
1570 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1571 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1573 # if !@HAVE_DECL_TRUNCL@
1574 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1576 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1578 _GL_CXXALIASWARN (truncl);
1579 #elif defined GNULIB_POSIXCHECK
1581 # if HAVE_RAW_DECL_TRUNCL
1582 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1583 "use gnulib module truncl for portability");
1588 /* Definitions of function-like macros come here, after the function
1592 #if @GNULIB_ISFINITE@
1593 # if @REPLACE_ISFINITE@
1594 _GL_EXTERN_C int gl_isfinitef (float x);
1595 _GL_EXTERN_C int gl_isfinited (double x);
1596 _GL_EXTERN_C int gl_isfinitel (long double x);
1598 # define isfinite(x) \
1599 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1600 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1605 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1607 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1610 #elif defined GNULIB_POSIXCHECK
1611 # if defined isfinite
1612 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1614 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1620 # if @REPLACE_ISINF@
1621 _GL_EXTERN_C int gl_isinff (float x);
1622 _GL_EXTERN_C int gl_isinfd (double x);
1623 _GL_EXTERN_C int gl_isinfl (long double x);
1626 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1627 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1632 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1634 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1637 #elif defined GNULIB_POSIXCHECK
1639 _GL_WARN_REAL_FLOATING_DECL (isinf);
1641 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1647 /* Test for NaN for 'float' numbers. */
1649 /* The original <math.h> included above provides a declaration of isnan macro
1650 or (older) isnanf function. */
1652 /* GCC 4.0 and newer provides three built-ins for isnan. */
1654 # define isnanf(x) __builtin_isnanf ((float)(x))
1655 # elif defined isnan
1657 # define isnanf(x) isnan ((float)(x))
1660 /* Test whether X is a NaN. */
1662 # define isnanf rpl_isnanf
1663 _GL_EXTERN_C int isnanf (float x);
1668 /* Test for NaN for 'double' numbers.
1669 This function is a gnulib extension, unlike isnan() which applied only
1670 to 'double' numbers earlier but now is a type-generic macro. */
1672 /* The original <math.h> included above provides a declaration of isnan
1675 /* GCC 4.0 and newer provides three built-ins for isnan. */
1677 # define isnand(x) __builtin_isnan ((double)(x))
1680 # define isnand(x) isnan ((double)(x))
1683 /* Test whether X is a NaN. */
1685 # define isnand rpl_isnand
1686 _GL_EXTERN_C int isnand (double x);
1691 /* Test for NaN for 'long double' numbers. */
1693 /* The original <math.h> included above provides a declaration of isnan
1694 macro or (older) isnanl function. */
1696 /* GCC 4.0 and newer provides three built-ins for isnan. */
1698 # define isnanl(x) __builtin_isnanl ((long double)(x))
1699 # elif defined isnan
1701 # define isnanl(x) isnan ((long double)(x))
1704 /* Test whether X is a NaN. */
1706 # define isnanl rpl_isnanl
1707 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1711 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1713 # if @REPLACE_ISNAN@
1714 /* We can't just use the isnanf macro (e.g.) as exposed by
1715 isnanf.h (e.g.) here, because those may end up being macros
1716 that recursively expand back to isnan. So use the gnulib
1717 replacements for them directly. */
1718 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1719 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1721 _GL_EXTERN_C int rpl_isnanf (float x);
1722 # define gl_isnan_f(x) rpl_isnanf (x)
1724 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1725 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1727 _GL_EXTERN_C int rpl_isnand (double x);
1728 # define gl_isnan_d(x) rpl_isnand (x)
1730 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1731 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1733 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1734 # define gl_isnan_l(x) rpl_isnanl (x)
1738 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1739 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1741 # elif __GNUC__ >= 4
1744 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1745 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1746 __builtin_isnanf ((float)(x)))
1750 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1752 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1755 /* Ensure isnan is a macro. */
1757 # define isnan isnan
1760 #elif defined GNULIB_POSIXCHECK
1762 _GL_WARN_REAL_FLOATING_DECL (isnan);
1764 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1769 #if @GNULIB_SIGNBIT@
1770 # if @REPLACE_SIGNBIT_USING_GCC@
1772 /* GCC 4.0 and newer provides three built-ins for signbit. */
1773 # define signbit(x) \
1774 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1775 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1776 __builtin_signbitf (x))
1778 # if @REPLACE_SIGNBIT@
1780 _GL_EXTERN_C int gl_signbitf (float arg);
1781 _GL_EXTERN_C int gl_signbitd (double arg);
1782 _GL_EXTERN_C int gl_signbitl (long double arg);
1783 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1784 # define _GL_NUM_UINT_WORDS(type) \
1785 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1786 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1787 # define gl_signbitf_OPTIMIZED_MACRO
1788 # define gl_signbitf(arg) \
1789 ({ union { float _value; \
1790 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1792 _m._value = (arg); \
1793 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1796 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1797 # define gl_signbitd_OPTIMIZED_MACRO
1798 # define gl_signbitd(arg) \
1799 ({ union { double _value; \
1800 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1802 _m._value = (arg); \
1803 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1806 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1807 # define gl_signbitl_OPTIMIZED_MACRO
1808 # define gl_signbitl(arg) \
1809 ({ union { long double _value; \
1810 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1812 _m._value = (arg); \
1813 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1817 # define signbit(x) \
1818 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1819 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1824 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1826 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1829 #elif defined GNULIB_POSIXCHECK
1830 # if defined signbit
1831 _GL_WARN_REAL_FLOATING_DECL (signbit);
1833 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1838 #endif /* _@GUARD_PREFIX@_MATH_H */
1839 #endif /* _@GUARD_PREFIX@_MATH_H */