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_VAL (1.0 / 0.0)
152 _GL_FUNCDECL_SYS (acosf, float, (float x));
154 _GL_CXXALIAS_SYS (acosf, float, (float x));
155 _GL_CXXALIASWARN (acosf);
156 #elif defined GNULIB_POSIXCHECK
158 # if HAVE_RAW_DECL_ACOSF
159 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
160 "use gnulib module acosf for portability");
165 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
167 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
169 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
170 _GL_CXXALIASWARN (acosl);
171 #elif defined GNULIB_POSIXCHECK
173 # if HAVE_RAW_DECL_ACOSL
174 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
175 "use gnulib module mathl for portability");
183 _GL_FUNCDECL_SYS (asinf, float, (float x));
185 _GL_CXXALIAS_SYS (asinf, float, (float x));
186 _GL_CXXALIASWARN (asinf);
187 #elif defined GNULIB_POSIXCHECK
189 # if HAVE_RAW_DECL_ASINF
190 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
191 "use gnulib module asinf for portability");
196 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
198 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
200 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
201 _GL_CXXALIASWARN (asinl);
202 #elif defined GNULIB_POSIXCHECK
204 # if HAVE_RAW_DECL_ASINL
205 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
206 "use gnulib module mathl for portability");
214 _GL_FUNCDECL_SYS (atanf, float, (float x));
216 _GL_CXXALIAS_SYS (atanf, float, (float x));
217 _GL_CXXALIASWARN (atanf);
218 #elif defined GNULIB_POSIXCHECK
220 # if HAVE_RAW_DECL_ATANF
221 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
222 "use gnulib module atanf for portability");
227 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
228 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
230 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
231 _GL_CXXALIASWARN (atanl);
232 #elif defined GNULIB_POSIXCHECK
234 # if HAVE_RAW_DECL_ATANL
235 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
236 "use gnulib module mathl for portability");
244 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
246 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
247 _GL_CXXALIASWARN (atan2f);
248 #elif defined GNULIB_POSIXCHECK
250 # if HAVE_RAW_DECL_ATAN2F
251 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
252 "use gnulib module atan2f for portability");
259 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
261 # define ceilf rpl_ceilf
263 _GL_FUNCDECL_RPL (ceilf, float, (float x));
264 _GL_CXXALIAS_RPL (ceilf, float, (float x));
266 # if !@HAVE_DECL_CEILF@
268 _GL_FUNCDECL_SYS (ceilf, float, (float x));
270 _GL_CXXALIAS_SYS (ceilf, float, (float x));
272 _GL_CXXALIASWARN (ceilf);
273 #elif defined GNULIB_POSIXCHECK
275 # if HAVE_RAW_DECL_CEILF
276 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
277 "use gnulib module ceilf for portability");
283 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
284 # define ceil rpl_ceil
286 _GL_FUNCDECL_RPL (ceil, double, (double x));
287 _GL_CXXALIAS_RPL (ceil, double, (double x));
289 _GL_CXXALIAS_SYS (ceil, double, (double x));
291 _GL_CXXALIASWARN (ceil);
296 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
298 # define ceill rpl_ceill
300 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
301 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
303 # if !@HAVE_DECL_CEILL@
305 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
307 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
309 _GL_CXXALIASWARN (ceill);
310 #elif defined GNULIB_POSIXCHECK
312 # if HAVE_RAW_DECL_CEILL
313 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
314 "use gnulib module ceill for portability");
319 #if @GNULIB_COPYSIGNF@
320 # if !@HAVE_COPYSIGNF@
321 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
323 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
324 _GL_CXXALIASWARN (copysignf);
325 #elif defined GNULIB_POSIXCHECK
327 # if HAVE_RAW_DECL_COPYSIGNF
328 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
329 "use gnulib module copysignf for portability");
333 #if @GNULIB_COPYSIGN@
334 # if !@HAVE_COPYSIGN@
335 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
337 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
338 _GL_CXXALIASWARN (copysign);
339 #elif defined GNULIB_POSIXCHECK
341 # if HAVE_RAW_DECL_COPYSIGN
342 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
343 "use gnulib module copysign for portability");
347 #if @GNULIB_COPYSIGNL@
348 # if !@HAVE_COPYSIGNL@
349 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
351 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
352 _GL_CXXALIASWARN (copysignl);
353 #elif defined GNULIB_POSIXCHECK
355 # if HAVE_RAW_DECL_COPYSIGNL
356 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
357 "use gnulib module copysignl for portability");
365 _GL_FUNCDECL_SYS (cosf, float, (float x));
367 _GL_CXXALIAS_SYS (cosf, float, (float x));
368 _GL_CXXALIASWARN (cosf);
369 #elif defined GNULIB_POSIXCHECK
371 # if HAVE_RAW_DECL_COSF
372 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
373 "use gnulib module cosf for portability");
378 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
380 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
382 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
383 _GL_CXXALIASWARN (cosl);
384 #elif defined GNULIB_POSIXCHECK
386 # if HAVE_RAW_DECL_COSL
387 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
388 "use gnulib module mathl for portability");
396 _GL_FUNCDECL_SYS (coshf, float, (float x));
398 _GL_CXXALIAS_SYS (coshf, float, (float x));
399 _GL_CXXALIASWARN (coshf);
400 #elif defined GNULIB_POSIXCHECK
402 # if HAVE_RAW_DECL_COSHF
403 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
404 "use gnulib module coshf for portability");
412 _GL_FUNCDECL_SYS (expf, float, (float x));
414 _GL_CXXALIAS_SYS (expf, float, (float x));
415 _GL_CXXALIASWARN (expf);
416 #elif defined GNULIB_POSIXCHECK
418 # if HAVE_RAW_DECL_EXPF
419 _GL_WARN_ON_USE (expf, "expf is unportable - "
420 "use gnulib module expf for portability");
425 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
427 _GL_FUNCDECL_SYS (expl, long double, (long double x));
429 _GL_CXXALIAS_SYS (expl, long double, (long double x));
430 _GL_CXXALIASWARN (expl);
431 #elif defined GNULIB_POSIXCHECK
433 # if HAVE_RAW_DECL_EXPL
434 _GL_WARN_ON_USE (expl, "expl is unportable - "
435 "use gnulib module mathl for portability");
443 _GL_FUNCDECL_SYS (fabsf, float, (float x));
445 _GL_CXXALIAS_SYS (fabsf, float, (float x));
446 _GL_CXXALIASWARN (fabsf);
447 #elif defined GNULIB_POSIXCHECK
449 # if HAVE_RAW_DECL_FABSF
450 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
451 "use gnulib module fabsf for portability");
457 # if @REPLACE_FLOORF@
458 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
460 # define floorf rpl_floorf
462 _GL_FUNCDECL_RPL (floorf, float, (float x));
463 _GL_CXXALIAS_RPL (floorf, float, (float x));
465 # if !@HAVE_DECL_FLOORF@
467 _GL_FUNCDECL_SYS (floorf, float, (float x));
469 _GL_CXXALIAS_SYS (floorf, float, (float x));
471 _GL_CXXALIASWARN (floorf);
472 #elif defined GNULIB_POSIXCHECK
474 # if HAVE_RAW_DECL_FLOORF
475 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
476 "use gnulib module floorf for portability");
482 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
483 # define floor rpl_floor
485 _GL_FUNCDECL_RPL (floor, double, (double x));
486 _GL_CXXALIAS_RPL (floor, double, (double x));
488 _GL_CXXALIAS_SYS (floor, double, (double x));
490 _GL_CXXALIASWARN (floor);
494 # if @REPLACE_FLOORL@
495 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
497 # define floorl rpl_floorl
499 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
500 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
502 # if !@HAVE_DECL_FLOORL@
504 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
506 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
508 _GL_CXXALIASWARN (floorl);
509 #elif defined GNULIB_POSIXCHECK
511 # if HAVE_RAW_DECL_FLOORL
512 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
513 "use gnulib module floorl for portability");
520 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
522 # define fmaf rpl_fmaf
524 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
525 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
528 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
530 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
532 _GL_CXXALIASWARN (fmaf);
533 #elif defined GNULIB_POSIXCHECK
535 # if HAVE_RAW_DECL_FMAF
536 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
537 "use gnulib module fmaf for portability");
543 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
547 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
548 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
551 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
553 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
555 _GL_CXXALIASWARN (fma);
556 #elif defined GNULIB_POSIXCHECK
558 # if HAVE_RAW_DECL_FMA
559 _GL_WARN_ON_USE (fma, "fma is unportable - "
560 "use gnulib module fma for portability");
566 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
568 # define fmal rpl_fmal
570 _GL_FUNCDECL_RPL (fmal, long double,
571 (long double x, long double y, long double z));
572 _GL_CXXALIAS_RPL (fmal, long double,
573 (long double x, long double y, long double z));
576 _GL_FUNCDECL_SYS (fmal, long double,
577 (long double x, long double y, long double z));
579 _GL_CXXALIAS_SYS (fmal, long double,
580 (long double x, long double y, long double z));
582 _GL_CXXALIASWARN (fmal);
583 #elif defined GNULIB_POSIXCHECK
585 # if HAVE_RAW_DECL_FMAL
586 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
587 "use gnulib module fmal for portability");
595 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
597 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
598 _GL_CXXALIASWARN (fmodf);
599 #elif defined GNULIB_POSIXCHECK
601 # if HAVE_RAW_DECL_FMODF
602 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
603 "use gnulib module fmodf for portability");
611 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
612 If x is zero: mantissa = x, exp = 0.
613 If x is infinite or NaN: mantissa = x, exp unspecified.
614 Store exp in *EXPPTR and return mantissa. */
616 # if @REPLACE_FREXPF@
617 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
619 # define frexpf rpl_frexpf
621 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
622 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
626 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
628 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
630 _GL_CXXALIASWARN (frexpf);
631 #elif defined GNULIB_POSIXCHECK
633 # if HAVE_RAW_DECL_FREXPF
634 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
635 "use gnulib module frexpf for portability");
642 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
643 If x is zero: mantissa = x, exp = 0.
644 If x is infinite or NaN: mantissa = x, exp unspecified.
645 Store exp in *EXPPTR and return mantissa. */
648 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
649 # define frexp rpl_frexp
651 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
652 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
654 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
656 _GL_CXXALIASWARN (frexp);
657 #elif defined GNULIB_POSIXCHECK
659 /* Assume frexp is always declared. */
660 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
661 "use gnulib module frexp for portability");
667 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
668 If x is zero: mantissa = x, exp = 0.
669 If x is infinite or NaN: mantissa = x, exp unspecified.
670 Store exp in *EXPPTR and return mantissa. */
671 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
672 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
674 # define frexpl rpl_frexpl
676 _GL_FUNCDECL_RPL (frexpl, long double,
677 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
678 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
680 # if !@HAVE_DECL_FREXPL@
681 _GL_FUNCDECL_SYS (frexpl, long double,
682 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
685 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
688 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
689 _GL_CXXALIASWARN (frexpl);
691 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
693 # if HAVE_RAW_DECL_FREXPL
694 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
695 "use gnulib module frexpl for portability");
700 /* Return x * 2^exp. */
704 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
706 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
707 _GL_CXXALIASWARN (ldexpf);
708 #elif defined GNULIB_POSIXCHECK
710 # if HAVE_RAW_DECL_LDEXPF
711 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
712 "use gnulib module ldexpf for portability");
716 /* Return x * 2^exp. */
717 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
718 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
720 # define ldexpl rpl_ldexpl
722 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
723 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
725 # if !@HAVE_DECL_LDEXPL@
726 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
729 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
733 _GL_CXXALIASWARN (ldexpl);
735 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
737 # if HAVE_RAW_DECL_LDEXPL
738 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
739 "use gnulib module ldexpl for portability");
745 # if !@HAVE_DECL_LOGB@
746 _GL_EXTERN_C double logb (double x);
748 #elif defined GNULIB_POSIXCHECK
750 # if HAVE_RAW_DECL_LOGB
751 _GL_WARN_ON_USE (logb, "logb is unportable - "
752 "use gnulib module logb for portability");
760 _GL_FUNCDECL_SYS (logf, float, (float x));
762 _GL_CXXALIAS_SYS (logf, float, (float x));
763 _GL_CXXALIASWARN (logf);
764 #elif defined GNULIB_POSIXCHECK
766 # if HAVE_RAW_DECL_LOGF
767 _GL_WARN_ON_USE (logf, "logf is unportable - "
768 "use gnulib module logf for portability");
773 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
775 _GL_FUNCDECL_SYS (logl, long double, (long double x));
777 _GL_CXXALIAS_SYS (logl, long double, (long double x));
778 _GL_CXXALIASWARN (logl);
779 #elif defined GNULIB_POSIXCHECK
781 # if HAVE_RAW_DECL_LOGL
782 _GL_WARN_ON_USE (logl, "logl is unportable - "
783 "use gnulib module mathl for portability");
791 _GL_FUNCDECL_SYS (log10f, float, (float x));
793 _GL_CXXALIAS_SYS (log10f, float, (float x));
794 _GL_CXXALIASWARN (log10f);
795 #elif defined GNULIB_POSIXCHECK
797 # if HAVE_RAW_DECL_LOG10F
798 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
799 "use gnulib module log10f for portability");
807 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
809 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
810 _GL_CXXALIASWARN (modff);
811 #elif defined GNULIB_POSIXCHECK
813 # if HAVE_RAW_DECL_MODFF
814 _GL_WARN_ON_USE (modff, "modff is unportable - "
815 "use gnulib module modff for portability");
823 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
825 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
826 _GL_CXXALIASWARN (powf);
827 #elif defined GNULIB_POSIXCHECK
829 # if HAVE_RAW_DECL_POWF
830 _GL_WARN_ON_USE (powf, "powf is unportable - "
831 "use gnulib module powf for portability");
838 _GL_FUNCDECL_SYS (rintf, float, (float x));
840 _GL_CXXALIAS_SYS (rintf, float, (float x));
841 _GL_CXXALIASWARN (rintf);
842 #elif defined GNULIB_POSIXCHECK
844 # if HAVE_RAW_DECL_RINTF
845 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
846 "use gnulib module rintf for portability");
852 _GL_FUNCDECL_SYS (rint, double, (double x));
854 _GL_CXXALIAS_SYS (rint, double, (double x));
855 _GL_CXXALIASWARN (rint);
856 #elif defined GNULIB_POSIXCHECK
858 # if HAVE_RAW_DECL_RINT
859 _GL_WARN_ON_USE (rint, "rint is unportable - "
860 "use gnulib module rint for portability");
866 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
868 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
869 _GL_CXXALIASWARN (rintl);
870 #elif defined GNULIB_POSIXCHECK
872 # if HAVE_RAW_DECL_RINTL
873 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
874 "use gnulib module rintl for portability");
880 # if @REPLACE_ROUNDF@
881 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
883 # define roundf rpl_roundf
885 _GL_FUNCDECL_RPL (roundf, float, (float x));
886 _GL_CXXALIAS_RPL (roundf, float, (float x));
888 # if !@HAVE_DECL_ROUNDF@
889 _GL_FUNCDECL_SYS (roundf, float, (float x));
891 _GL_CXXALIAS_SYS (roundf, float, (float x));
893 _GL_CXXALIASWARN (roundf);
894 #elif defined GNULIB_POSIXCHECK
896 # if HAVE_RAW_DECL_ROUNDF
897 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
898 "use gnulib module roundf for portability");
904 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
906 # define round rpl_round
908 _GL_FUNCDECL_RPL (round, double, (double x));
909 _GL_CXXALIAS_RPL (round, double, (double x));
911 # if !@HAVE_DECL_ROUND@
912 _GL_FUNCDECL_SYS (round, double, (double x));
914 _GL_CXXALIAS_SYS (round, double, (double x));
916 _GL_CXXALIASWARN (round);
917 #elif defined GNULIB_POSIXCHECK
919 # if HAVE_RAW_DECL_ROUND
920 _GL_WARN_ON_USE (round, "round is unportable - "
921 "use gnulib module round for portability");
926 # if @REPLACE_ROUNDL@
927 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
929 # define roundl rpl_roundl
931 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
932 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
934 # if !@HAVE_DECL_ROUNDL@
935 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
937 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
939 _GL_CXXALIASWARN (roundl);
940 #elif defined GNULIB_POSIXCHECK
942 # if HAVE_RAW_DECL_ROUNDL
943 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
944 "use gnulib module roundl for portability");
952 _GL_FUNCDECL_SYS (sinf, float, (float x));
954 _GL_CXXALIAS_SYS (sinf, float, (float x));
955 _GL_CXXALIASWARN (sinf);
956 #elif defined GNULIB_POSIXCHECK
958 # if HAVE_RAW_DECL_SINF
959 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
960 "use gnulib module sinf for portability");
965 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
967 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
969 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
970 _GL_CXXALIASWARN (sinl);
971 #elif defined GNULIB_POSIXCHECK
973 # if HAVE_RAW_DECL_SINL
974 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
975 "use gnulib module mathl for portability");
983 _GL_FUNCDECL_SYS (sinhf, float, (float x));
985 _GL_CXXALIAS_SYS (sinhf, float, (float x));
986 _GL_CXXALIASWARN (sinhf);
987 #elif defined GNULIB_POSIXCHECK
989 # if HAVE_RAW_DECL_SINHF
990 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
991 "use gnulib module sinhf for portability");
999 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
1001 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1002 _GL_CXXALIASWARN (sqrtf);
1003 #elif defined GNULIB_POSIXCHECK
1005 # if HAVE_RAW_DECL_SQRTF
1006 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1007 "use gnulib module sqrtf for portability");
1012 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1014 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1016 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1017 _GL_CXXALIASWARN (sqrtl);
1018 #elif defined GNULIB_POSIXCHECK
1020 # if HAVE_RAW_DECL_SQRTL
1021 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1022 "use gnulib module mathl for portability");
1030 _GL_FUNCDECL_SYS (tanf, float, (float x));
1032 _GL_CXXALIAS_SYS (tanf, float, (float x));
1033 _GL_CXXALIASWARN (tanf);
1034 #elif defined GNULIB_POSIXCHECK
1036 # if HAVE_RAW_DECL_TANF
1037 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1038 "use gnulib module tanf for portability");
1043 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1045 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1047 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1048 _GL_CXXALIASWARN (tanl);
1049 #elif defined GNULIB_POSIXCHECK
1051 # if HAVE_RAW_DECL_TANL
1052 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1053 "use gnulib module mathl for portability");
1061 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1063 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1064 _GL_CXXALIASWARN (tanhf);
1065 #elif defined GNULIB_POSIXCHECK
1067 # if HAVE_RAW_DECL_TANHF
1068 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1069 "use gnulib module tanhf for portability");
1075 # if @REPLACE_TRUNCF@
1076 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1077 # define truncf rpl_truncf
1079 _GL_FUNCDECL_RPL (truncf, float, (float x));
1080 _GL_CXXALIAS_RPL (truncf, float, (float x));
1082 # if !@HAVE_DECL_TRUNCF@
1083 _GL_FUNCDECL_SYS (truncf, float, (float x));
1085 _GL_CXXALIAS_SYS (truncf, float, (float x));
1087 _GL_CXXALIASWARN (truncf);
1088 #elif defined GNULIB_POSIXCHECK
1090 # if HAVE_RAW_DECL_TRUNCF
1091 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1092 "use gnulib module truncf for portability");
1097 # if @REPLACE_TRUNC@
1098 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1099 # define trunc rpl_trunc
1101 _GL_FUNCDECL_RPL (trunc, double, (double x));
1102 _GL_CXXALIAS_RPL (trunc, double, (double x));
1104 # if !@HAVE_DECL_TRUNC@
1105 _GL_FUNCDECL_SYS (trunc, double, (double x));
1107 _GL_CXXALIAS_SYS (trunc, double, (double x));
1109 _GL_CXXALIASWARN (trunc);
1110 #elif defined GNULIB_POSIXCHECK
1112 # if HAVE_RAW_DECL_TRUNC
1113 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1114 "use gnulib module trunc for portability");
1119 # if @REPLACE_TRUNCL@
1120 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1122 # define truncl rpl_truncl
1124 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1125 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1127 # if !@HAVE_DECL_TRUNCL@
1128 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1130 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1132 _GL_CXXALIASWARN (truncl);
1133 #elif defined GNULIB_POSIXCHECK
1135 # if HAVE_RAW_DECL_TRUNCL
1136 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1137 "use gnulib module truncl for portability");
1142 /* Definitions of function-like macros come here, after the function
1146 #if @GNULIB_ISFINITE@
1147 # if @REPLACE_ISFINITE@
1148 _GL_EXTERN_C int gl_isfinitef (float x);
1149 _GL_EXTERN_C int gl_isfinited (double x);
1150 _GL_EXTERN_C int gl_isfinitel (long double x);
1152 # define isfinite(x) \
1153 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1154 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1159 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1161 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1164 #elif defined GNULIB_POSIXCHECK
1165 # if defined isfinite
1166 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1168 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1174 # if @REPLACE_ISINF@
1175 _GL_EXTERN_C int gl_isinff (float x);
1176 _GL_EXTERN_C int gl_isinfd (double x);
1177 _GL_EXTERN_C int gl_isinfl (long double x);
1180 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1181 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1186 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1188 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1191 #elif defined GNULIB_POSIXCHECK
1193 _GL_WARN_REAL_FLOATING_DECL (isinf);
1195 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1201 /* Test for NaN for 'float' numbers. */
1203 /* The original <math.h> included above provides a declaration of isnan macro
1204 or (older) isnanf function. */
1206 /* GCC 4.0 and newer provides three built-ins for isnan. */
1208 # define isnanf(x) __builtin_isnanf ((float)(x))
1209 # elif defined isnan
1211 # define isnanf(x) isnan ((float)(x))
1214 /* Test whether X is a NaN. */
1216 # define isnanf rpl_isnanf
1217 _GL_EXTERN_C int isnanf (float x);
1222 /* Test for NaN for 'double' numbers.
1223 This function is a gnulib extension, unlike isnan() which applied only
1224 to 'double' numbers earlier but now is a type-generic macro. */
1226 /* The original <math.h> included above provides a declaration of isnan
1229 /* GCC 4.0 and newer provides three built-ins for isnan. */
1231 # define isnand(x) __builtin_isnan ((double)(x))
1234 # define isnand(x) isnan ((double)(x))
1237 /* Test whether X is a NaN. */
1239 # define isnand rpl_isnand
1240 _GL_EXTERN_C int isnand (double x);
1245 /* Test for NaN for 'long double' numbers. */
1247 /* The original <math.h> included above provides a declaration of isnan
1248 macro or (older) isnanl function. */
1250 /* GCC 4.0 and newer provides three built-ins for isnan. */
1252 # define isnanl(x) __builtin_isnanl ((long double)(x))
1253 # elif defined isnan
1255 # define isnanl(x) isnan ((long double)(x))
1258 /* Test whether X is a NaN. */
1260 # define isnanl rpl_isnanl
1261 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1265 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1267 # if @REPLACE_ISNAN@
1268 /* We can't just use the isnanf macro (e.g.) as exposed by
1269 isnanf.h (e.g.) here, because those may end up being macros
1270 that recursively expand back to isnan. So use the gnulib
1271 replacements for them directly. */
1272 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1273 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1275 _GL_EXTERN_C int rpl_isnanf (float x);
1276 # define gl_isnan_f(x) rpl_isnanf (x)
1278 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1279 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1281 _GL_EXTERN_C int rpl_isnand (double x);
1282 # define gl_isnan_d(x) rpl_isnand (x)
1284 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1285 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1287 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1288 # define gl_isnan_l(x) rpl_isnanl (x)
1292 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1293 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1295 # elif __GNUC__ >= 4
1298 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1299 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1300 __builtin_isnanf ((float)(x)))
1304 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1306 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1309 /* Ensure isnan is a macro. */
1311 # define isnan isnan
1314 #elif defined GNULIB_POSIXCHECK
1316 _GL_WARN_REAL_FLOATING_DECL (isnan);
1318 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1323 #if @GNULIB_SIGNBIT@
1324 # if @REPLACE_SIGNBIT_USING_GCC@
1326 /* GCC 4.0 and newer provides three built-ins for signbit. */
1327 # define signbit(x) \
1328 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1329 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1330 __builtin_signbitf (x))
1332 # if @REPLACE_SIGNBIT@
1334 _GL_EXTERN_C int gl_signbitf (float arg);
1335 _GL_EXTERN_C int gl_signbitd (double arg);
1336 _GL_EXTERN_C int gl_signbitl (long double arg);
1337 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1338 # define _GL_NUM_UINT_WORDS(type) \
1339 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1340 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1341 # define gl_signbitf_OPTIMIZED_MACRO
1342 # define gl_signbitf(arg) \
1343 ({ union { float _value; \
1344 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1346 _m._value = (arg); \
1347 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1350 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1351 # define gl_signbitd_OPTIMIZED_MACRO
1352 # define gl_signbitd(arg) \
1353 ({ union { double _value; \
1354 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1356 _m._value = (arg); \
1357 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1360 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1361 # define gl_signbitl_OPTIMIZED_MACRO
1362 # define gl_signbitl(arg) \
1363 ({ union { long double _value; \
1364 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1366 _m._value = (arg); \
1367 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1371 # define signbit(x) \
1372 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1373 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1378 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1380 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1383 #elif defined GNULIB_POSIXCHECK
1384 # if defined signbit
1385 _GL_WARN_REAL_FLOATING_DECL (signbit);
1387 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1392 #endif /* _@GUARD_PREFIX@_MATH_H */
1393 #endif /* _@GUARD_PREFIX@_MATH_H */