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@
166 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
168 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
169 _GL_CXXALIASWARN (acosl);
170 #elif defined GNULIB_POSIXCHECK
172 # if HAVE_RAW_DECL_ACOSL
173 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
174 "use gnulib module mathl for portability");
182 _GL_FUNCDECL_SYS (asinf, float, (float x));
184 _GL_CXXALIAS_SYS (asinf, float, (float x));
185 _GL_CXXALIASWARN (asinf);
186 #elif defined GNULIB_POSIXCHECK
188 # if HAVE_RAW_DECL_ASINF
189 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
190 "use gnulib module asinf for portability");
195 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
196 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
198 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
199 _GL_CXXALIASWARN (asinl);
200 #elif defined GNULIB_POSIXCHECK
202 # if HAVE_RAW_DECL_ASINL
203 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
204 "use gnulib module mathl for portability");
212 _GL_FUNCDECL_SYS (atanf, float, (float x));
214 _GL_CXXALIAS_SYS (atanf, float, (float x));
215 _GL_CXXALIASWARN (atanf);
216 #elif defined GNULIB_POSIXCHECK
218 # if HAVE_RAW_DECL_ATANF
219 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
220 "use gnulib module atanf for portability");
225 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
226 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
228 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
229 _GL_CXXALIASWARN (atanl);
230 #elif defined GNULIB_POSIXCHECK
232 # if HAVE_RAW_DECL_ATANL
233 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
234 "use gnulib module mathl for portability");
242 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
244 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
245 _GL_CXXALIASWARN (atan2f);
246 #elif defined GNULIB_POSIXCHECK
248 # if HAVE_RAW_DECL_ATAN2F
249 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
250 "use gnulib module atan2f for portability");
257 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
259 # define ceilf rpl_ceilf
261 _GL_FUNCDECL_RPL (ceilf, float, (float x));
262 _GL_CXXALIAS_RPL (ceilf, float, (float x));
264 # if !@HAVE_DECL_CEILF@
265 _GL_FUNCDECL_SYS (ceilf, float, (float x));
267 _GL_CXXALIAS_SYS (ceilf, float, (float x));
269 _GL_CXXALIASWARN (ceilf);
270 #elif defined GNULIB_POSIXCHECK
272 # if HAVE_RAW_DECL_CEILF
273 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
274 "use gnulib module ceilf for portability");
280 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
281 # define ceil rpl_ceil
283 _GL_FUNCDECL_RPL (ceil, double, (double x));
284 _GL_CXXALIAS_RPL (ceil, double, (double x));
286 _GL_CXXALIAS_SYS (ceil, double, (double x));
288 _GL_CXXALIASWARN (ceil);
293 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
295 # define ceill rpl_ceill
297 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
298 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
300 # if !@HAVE_DECL_CEILL@
301 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
303 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
305 _GL_CXXALIASWARN (ceill);
306 #elif defined GNULIB_POSIXCHECK
308 # if HAVE_RAW_DECL_CEILL
309 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
310 "use gnulib module ceill for portability");
315 #if @GNULIB_COPYSIGNF@
316 # if !@HAVE_COPYSIGNF@
317 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
319 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
320 _GL_CXXALIASWARN (copysignf);
321 #elif defined GNULIB_POSIXCHECK
323 # if HAVE_RAW_DECL_COPYSIGNF
324 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
325 "use gnulib module copysignf for portability");
329 #if @GNULIB_COPYSIGN@
330 # if !@HAVE_COPYSIGN@
331 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
333 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
334 _GL_CXXALIASWARN (copysign);
335 #elif defined GNULIB_POSIXCHECK
337 # if HAVE_RAW_DECL_COPYSIGN
338 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
339 "use gnulib module copysign for portability");
343 #if @GNULIB_COPYSIGNL@
344 # if !@HAVE_COPYSIGNL@
345 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
347 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
348 _GL_CXXALIASWARN (copysignl);
349 #elif defined GNULIB_POSIXCHECK
351 # if HAVE_RAW_DECL_COPYSIGNL
352 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
353 "use gnulib module copysignl for portability");
361 _GL_FUNCDECL_SYS (cosf, float, (float x));
363 _GL_CXXALIAS_SYS (cosf, float, (float x));
364 _GL_CXXALIASWARN (cosf);
365 #elif defined GNULIB_POSIXCHECK
367 # if HAVE_RAW_DECL_COSF
368 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
369 "use gnulib module cosf for portability");
374 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
375 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
377 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
378 _GL_CXXALIASWARN (cosl);
379 #elif defined GNULIB_POSIXCHECK
381 # if HAVE_RAW_DECL_COSL
382 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
383 "use gnulib module mathl for portability");
391 _GL_FUNCDECL_SYS (coshf, float, (float x));
393 _GL_CXXALIAS_SYS (coshf, float, (float x));
394 _GL_CXXALIASWARN (coshf);
395 #elif defined GNULIB_POSIXCHECK
397 # if HAVE_RAW_DECL_COSHF
398 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
399 "use gnulib module coshf for portability");
407 _GL_FUNCDECL_SYS (expf, float, (float x));
409 _GL_CXXALIAS_SYS (expf, float, (float x));
410 _GL_CXXALIASWARN (expf);
411 #elif defined GNULIB_POSIXCHECK
413 # if HAVE_RAW_DECL_EXPF
414 _GL_WARN_ON_USE (expf, "expf is unportable - "
415 "use gnulib module expf for portability");
420 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
421 _GL_FUNCDECL_SYS (expl, long double, (long double x));
423 _GL_CXXALIAS_SYS (expl, long double, (long double x));
424 _GL_CXXALIASWARN (expl);
425 #elif defined GNULIB_POSIXCHECK
427 # if HAVE_RAW_DECL_EXPL
428 _GL_WARN_ON_USE (expl, "expl is unportable - "
429 "use gnulib module mathl for portability");
437 _GL_FUNCDECL_SYS (fabsf, float, (float x));
439 _GL_CXXALIAS_SYS (fabsf, float, (float x));
440 _GL_CXXALIASWARN (fabsf);
441 #elif defined GNULIB_POSIXCHECK
443 # if HAVE_RAW_DECL_FABSF
444 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
445 "use gnulib module fabsf for portability");
451 # if @REPLACE_FLOORF@
452 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
454 # define floorf rpl_floorf
456 _GL_FUNCDECL_RPL (floorf, float, (float x));
457 _GL_CXXALIAS_RPL (floorf, float, (float x));
459 # if !@HAVE_DECL_FLOORF@
461 _GL_FUNCDECL_SYS (floorf, float, (float x));
463 _GL_CXXALIAS_SYS (floorf, float, (float x));
465 _GL_CXXALIASWARN (floorf);
466 #elif defined GNULIB_POSIXCHECK
468 # if HAVE_RAW_DECL_FLOORF
469 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
470 "use gnulib module floorf for portability");
476 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
477 # define floor rpl_floor
479 _GL_FUNCDECL_RPL (floor, double, (double x));
480 _GL_CXXALIAS_RPL (floor, double, (double x));
482 _GL_CXXALIAS_SYS (floor, double, (double x));
484 _GL_CXXALIASWARN (floor);
488 # if @REPLACE_FLOORL@
489 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
491 # define floorl rpl_floorl
493 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
494 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
496 # if !@HAVE_DECL_FLOORL@
497 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
499 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
501 _GL_CXXALIASWARN (floorl);
502 #elif defined GNULIB_POSIXCHECK
504 # if HAVE_RAW_DECL_FLOORL
505 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
506 "use gnulib module floorl for portability");
513 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
515 # define fmaf rpl_fmaf
517 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
518 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
521 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
523 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
525 _GL_CXXALIASWARN (fmaf);
526 #elif defined GNULIB_POSIXCHECK
528 # if HAVE_RAW_DECL_FMAF
529 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
530 "use gnulib module fmaf for portability");
536 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
540 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
541 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
544 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
546 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
548 _GL_CXXALIASWARN (fma);
549 #elif defined GNULIB_POSIXCHECK
551 # if HAVE_RAW_DECL_FMA
552 _GL_WARN_ON_USE (fma, "fma is unportable - "
553 "use gnulib module fma for portability");
559 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
561 # define fmal rpl_fmal
563 _GL_FUNCDECL_RPL (fmal, long double,
564 (long double x, long double y, long double z));
565 _GL_CXXALIAS_RPL (fmal, long double,
566 (long double x, long double y, long double z));
569 _GL_FUNCDECL_SYS (fmal, long double,
570 (long double x, long double y, long double z));
572 _GL_CXXALIAS_SYS (fmal, long double,
573 (long double x, long double y, long double z));
575 _GL_CXXALIASWARN (fmal);
576 #elif defined GNULIB_POSIXCHECK
578 # if HAVE_RAW_DECL_FMAL
579 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
580 "use gnulib module fmal for portability");
588 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
590 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
591 _GL_CXXALIASWARN (fmodf);
592 #elif defined GNULIB_POSIXCHECK
594 # if HAVE_RAW_DECL_FMODF
595 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
596 "use gnulib module fmodf for portability");
604 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
605 If x is zero: mantissa = x, exp = 0.
606 If x is infinite or NaN: mantissa = x, exp unspecified.
607 Store exp in *EXPPTR and return mantissa. */
609 # if @REPLACE_FREXPF@
610 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
612 # define frexpf rpl_frexpf
614 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
615 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
619 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
621 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
623 _GL_CXXALIASWARN (frexpf);
624 #elif defined GNULIB_POSIXCHECK
626 # if HAVE_RAW_DECL_FREXPF
627 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
628 "use gnulib module frexpf for portability");
635 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
636 If x is zero: mantissa = x, exp = 0.
637 If x is infinite or NaN: mantissa = x, exp unspecified.
638 Store exp in *EXPPTR and return mantissa. */
641 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
642 # define frexp rpl_frexp
644 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
645 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
647 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
649 _GL_CXXALIASWARN (frexp);
650 #elif defined GNULIB_POSIXCHECK
652 /* Assume frexp is always declared. */
653 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
654 "use gnulib module frexp for portability");
660 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
661 If x is zero: mantissa = x, exp = 0.
662 If x is infinite or NaN: mantissa = x, exp unspecified.
663 Store exp in *EXPPTR and return mantissa. */
664 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
665 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
667 # define frexpl rpl_frexpl
669 _GL_FUNCDECL_RPL (frexpl, long double,
670 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
671 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
673 # if !@HAVE_DECL_FREXPL@
674 _GL_FUNCDECL_SYS (frexpl, long double,
675 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
678 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
681 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
682 _GL_CXXALIASWARN (frexpl);
684 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
686 # if HAVE_RAW_DECL_FREXPL
687 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
688 "use gnulib module frexpl for portability");
693 /* Return x * 2^exp. */
697 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
699 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
700 _GL_CXXALIASWARN (ldexpf);
701 #elif defined GNULIB_POSIXCHECK
703 # if HAVE_RAW_DECL_LDEXPF
704 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
705 "use gnulib module ldexpf for portability");
709 /* Return x * 2^exp. */
710 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
711 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
713 # define ldexpl rpl_ldexpl
715 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
716 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
718 # if !@HAVE_DECL_LDEXPL@
719 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
722 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
726 _GL_CXXALIASWARN (ldexpl);
728 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
730 # if HAVE_RAW_DECL_LDEXPL
731 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
732 "use gnulib module ldexpl for portability");
738 # if !@HAVE_DECL_LOGB@
739 _GL_EXTERN_C double logb (double x);
741 #elif defined GNULIB_POSIXCHECK
743 # if HAVE_RAW_DECL_LOGB
744 _GL_WARN_ON_USE (logb, "logb is unportable - "
745 "use gnulib module logb for portability");
753 _GL_FUNCDECL_SYS (logf, float, (float x));
755 _GL_CXXALIAS_SYS (logf, float, (float x));
756 _GL_CXXALIASWARN (logf);
757 #elif defined GNULIB_POSIXCHECK
759 # if HAVE_RAW_DECL_LOGF
760 _GL_WARN_ON_USE (logf, "logf is unportable - "
761 "use gnulib module logf for portability");
766 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
767 _GL_FUNCDECL_SYS (logl, long double, (long double x));
769 _GL_CXXALIAS_SYS (logl, long double, (long double x));
770 _GL_CXXALIASWARN (logl);
771 #elif defined GNULIB_POSIXCHECK
773 # if HAVE_RAW_DECL_LOGL
774 _GL_WARN_ON_USE (logl, "logl is unportable - "
775 "use gnulib module mathl for portability");
783 _GL_FUNCDECL_SYS (log10f, float, (float x));
785 _GL_CXXALIAS_SYS (log10f, float, (float x));
786 _GL_CXXALIASWARN (log10f);
787 #elif defined GNULIB_POSIXCHECK
789 # if HAVE_RAW_DECL_LOG10F
790 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
791 "use gnulib module log10f for portability");
799 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
801 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
802 _GL_CXXALIASWARN (modff);
803 #elif defined GNULIB_POSIXCHECK
805 # if HAVE_RAW_DECL_MODFF
806 _GL_WARN_ON_USE (modff, "modff is unportable - "
807 "use gnulib module modff for portability");
815 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
817 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
818 _GL_CXXALIASWARN (powf);
819 #elif defined GNULIB_POSIXCHECK
821 # if HAVE_RAW_DECL_POWF
822 _GL_WARN_ON_USE (powf, "powf is unportable - "
823 "use gnulib module powf for portability");
830 _GL_FUNCDECL_SYS (rintf, float, (float x));
832 _GL_CXXALIAS_SYS (rintf, float, (float x));
833 _GL_CXXALIASWARN (rintf);
834 #elif defined GNULIB_POSIXCHECK
836 # if HAVE_RAW_DECL_RINTF
837 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
838 "use gnulib module rintf for portability");
844 _GL_FUNCDECL_SYS (rint, double, (double x));
846 _GL_CXXALIAS_SYS (rint, double, (double x));
847 _GL_CXXALIASWARN (rint);
848 #elif defined GNULIB_POSIXCHECK
850 # if HAVE_RAW_DECL_RINT
851 _GL_WARN_ON_USE (rint, "rint is unportable - "
852 "use gnulib module rint for portability");
858 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
860 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
861 _GL_CXXALIASWARN (rintl);
862 #elif defined GNULIB_POSIXCHECK
864 # if HAVE_RAW_DECL_RINTL
865 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
866 "use gnulib module rintl for portability");
872 # if @REPLACE_ROUNDF@
873 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
875 # define roundf rpl_roundf
877 _GL_FUNCDECL_RPL (roundf, float, (float x));
878 _GL_CXXALIAS_RPL (roundf, float, (float x));
880 # if !@HAVE_DECL_ROUNDF@
881 _GL_FUNCDECL_SYS (roundf, float, (float x));
883 _GL_CXXALIAS_SYS (roundf, float, (float x));
885 _GL_CXXALIASWARN (roundf);
886 #elif defined GNULIB_POSIXCHECK
888 # if HAVE_RAW_DECL_ROUNDF
889 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
890 "use gnulib module roundf for portability");
896 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
898 # define round rpl_round
900 _GL_FUNCDECL_RPL (round, double, (double x));
901 _GL_CXXALIAS_RPL (round, double, (double x));
903 # if !@HAVE_DECL_ROUND@
904 _GL_FUNCDECL_SYS (round, double, (double x));
906 _GL_CXXALIAS_SYS (round, double, (double x));
908 _GL_CXXALIASWARN (round);
909 #elif defined GNULIB_POSIXCHECK
911 # if HAVE_RAW_DECL_ROUND
912 _GL_WARN_ON_USE (round, "round is unportable - "
913 "use gnulib module round for portability");
918 # if @REPLACE_ROUNDL@
919 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
921 # define roundl rpl_roundl
923 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
924 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
926 # if !@HAVE_DECL_ROUNDL@
927 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
929 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
931 _GL_CXXALIASWARN (roundl);
932 #elif defined GNULIB_POSIXCHECK
934 # if HAVE_RAW_DECL_ROUNDL
935 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
936 "use gnulib module roundl for portability");
944 _GL_FUNCDECL_SYS (sinf, float, (float x));
946 _GL_CXXALIAS_SYS (sinf, float, (float x));
947 _GL_CXXALIASWARN (sinf);
948 #elif defined GNULIB_POSIXCHECK
950 # if HAVE_RAW_DECL_SINF
951 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
952 "use gnulib module sinf for portability");
957 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
958 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
960 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
961 _GL_CXXALIASWARN (sinl);
962 #elif defined GNULIB_POSIXCHECK
964 # if HAVE_RAW_DECL_SINL
965 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
966 "use gnulib module mathl for portability");
974 _GL_FUNCDECL_SYS (sinhf, float, (float x));
976 _GL_CXXALIAS_SYS (sinhf, float, (float x));
977 _GL_CXXALIASWARN (sinhf);
978 #elif defined GNULIB_POSIXCHECK
980 # if HAVE_RAW_DECL_SINHF
981 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
982 "use gnulib module sinhf for portability");
990 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
992 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
993 _GL_CXXALIASWARN (sqrtf);
994 #elif defined GNULIB_POSIXCHECK
996 # if HAVE_RAW_DECL_SQRTF
997 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
998 "use gnulib module sqrtf for portability");
1003 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1004 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1006 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1007 _GL_CXXALIASWARN (sqrtl);
1008 #elif defined GNULIB_POSIXCHECK
1010 # if HAVE_RAW_DECL_SQRTL
1011 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1012 "use gnulib module mathl for portability");
1020 _GL_FUNCDECL_SYS (tanf, float, (float x));
1022 _GL_CXXALIAS_SYS (tanf, float, (float x));
1023 _GL_CXXALIASWARN (tanf);
1024 #elif defined GNULIB_POSIXCHECK
1026 # if HAVE_RAW_DECL_TANF
1027 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1028 "use gnulib module tanf for portability");
1033 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1034 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1036 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1037 _GL_CXXALIASWARN (tanl);
1038 #elif defined GNULIB_POSIXCHECK
1040 # if HAVE_RAW_DECL_TANL
1041 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1042 "use gnulib module mathl for portability");
1050 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1052 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1053 _GL_CXXALIASWARN (tanhf);
1054 #elif defined GNULIB_POSIXCHECK
1056 # if HAVE_RAW_DECL_TANHF
1057 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1058 "use gnulib module tanhf for portability");
1064 # if @REPLACE_TRUNCF@
1065 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1066 # define truncf rpl_truncf
1068 _GL_FUNCDECL_RPL (truncf, float, (float x));
1069 _GL_CXXALIAS_RPL (truncf, float, (float x));
1071 # if !@HAVE_DECL_TRUNCF@
1072 _GL_FUNCDECL_SYS (truncf, float, (float x));
1074 _GL_CXXALIAS_SYS (truncf, float, (float x));
1076 _GL_CXXALIASWARN (truncf);
1077 #elif defined GNULIB_POSIXCHECK
1079 # if HAVE_RAW_DECL_TRUNCF
1080 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1081 "use gnulib module truncf for portability");
1086 # if @REPLACE_TRUNC@
1087 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1088 # define trunc rpl_trunc
1090 _GL_FUNCDECL_RPL (trunc, double, (double x));
1091 _GL_CXXALIAS_RPL (trunc, double, (double x));
1093 # if !@HAVE_DECL_TRUNC@
1094 _GL_FUNCDECL_SYS (trunc, double, (double x));
1096 _GL_CXXALIAS_SYS (trunc, double, (double x));
1098 _GL_CXXALIASWARN (trunc);
1099 #elif defined GNULIB_POSIXCHECK
1101 # if HAVE_RAW_DECL_TRUNC
1102 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1103 "use gnulib module trunc for portability");
1108 # if @REPLACE_TRUNCL@
1109 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1111 # define truncl rpl_truncl
1113 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1114 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1116 # if !@HAVE_DECL_TRUNCL@
1117 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1119 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1121 _GL_CXXALIASWARN (truncl);
1122 #elif defined GNULIB_POSIXCHECK
1124 # if HAVE_RAW_DECL_TRUNCL
1125 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1126 "use gnulib module truncl for portability");
1131 /* Definitions of function-like macros come here, after the function
1135 #if @GNULIB_ISFINITE@
1136 # if @REPLACE_ISFINITE@
1137 _GL_EXTERN_C int gl_isfinitef (float x);
1138 _GL_EXTERN_C int gl_isfinited (double x);
1139 _GL_EXTERN_C int gl_isfinitel (long double x);
1141 # define isfinite(x) \
1142 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1143 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1148 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1150 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1153 #elif defined GNULIB_POSIXCHECK
1154 # if defined isfinite
1155 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1157 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1163 # if @REPLACE_ISINF@
1164 _GL_EXTERN_C int gl_isinff (float x);
1165 _GL_EXTERN_C int gl_isinfd (double x);
1166 _GL_EXTERN_C int gl_isinfl (long double x);
1169 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1170 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1175 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1177 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1180 #elif defined GNULIB_POSIXCHECK
1182 _GL_WARN_REAL_FLOATING_DECL (isinf);
1184 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1190 /* Test for NaN for 'float' numbers. */
1192 /* The original <math.h> included above provides a declaration of isnan macro
1193 or (older) isnanf function. */
1195 /* GCC 4.0 and newer provides three built-ins for isnan. */
1197 # define isnanf(x) __builtin_isnanf ((float)(x))
1198 # elif defined isnan
1200 # define isnanf(x) isnan ((float)(x))
1203 /* Test whether X is a NaN. */
1205 # define isnanf rpl_isnanf
1206 _GL_EXTERN_C int isnanf (float x);
1211 /* Test for NaN for 'double' numbers.
1212 This function is a gnulib extension, unlike isnan() which applied only
1213 to 'double' numbers earlier but now is a type-generic macro. */
1215 /* The original <math.h> included above provides a declaration of isnan
1218 /* GCC 4.0 and newer provides three built-ins for isnan. */
1220 # define isnand(x) __builtin_isnan ((double)(x))
1223 # define isnand(x) isnan ((double)(x))
1226 /* Test whether X is a NaN. */
1228 # define isnand rpl_isnand
1229 _GL_EXTERN_C int isnand (double x);
1234 /* Test for NaN for 'long double' numbers. */
1236 /* The original <math.h> included above provides a declaration of isnan
1237 macro or (older) isnanl function. */
1239 /* GCC 4.0 and newer provides three built-ins for isnan. */
1241 # define isnanl(x) __builtin_isnanl ((long double)(x))
1242 # elif defined isnan
1244 # define isnanl(x) isnan ((long double)(x))
1247 /* Test whether X is a NaN. */
1249 # define isnanl rpl_isnanl
1250 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1254 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1256 # if @REPLACE_ISNAN@
1257 /* We can't just use the isnanf macro (e.g.) as exposed by
1258 isnanf.h (e.g.) here, because those may end up being macros
1259 that recursively expand back to isnan. So use the gnulib
1260 replacements for them directly. */
1261 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1262 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1264 _GL_EXTERN_C int rpl_isnanf (float x);
1265 # define gl_isnan_f(x) rpl_isnanf (x)
1267 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1268 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1270 _GL_EXTERN_C int rpl_isnand (double x);
1271 # define gl_isnan_d(x) rpl_isnand (x)
1273 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1274 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1276 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1277 # define gl_isnan_l(x) rpl_isnanl (x)
1281 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1282 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1284 # elif __GNUC__ >= 4
1287 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1288 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1289 __builtin_isnanf ((float)(x)))
1293 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1295 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1298 /* Ensure isnan is a macro. */
1300 # define isnan isnan
1303 #elif defined GNULIB_POSIXCHECK
1305 _GL_WARN_REAL_FLOATING_DECL (isnan);
1307 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1312 #if @GNULIB_SIGNBIT@
1313 # if @REPLACE_SIGNBIT_USING_GCC@
1315 /* GCC 4.0 and newer provides three built-ins for signbit. */
1316 # define signbit(x) \
1317 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1318 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1319 __builtin_signbitf (x))
1321 # if @REPLACE_SIGNBIT@
1323 _GL_EXTERN_C int gl_signbitf (float arg);
1324 _GL_EXTERN_C int gl_signbitd (double arg);
1325 _GL_EXTERN_C int gl_signbitl (long double arg);
1326 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1327 # define _GL_NUM_UINT_WORDS(type) \
1328 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1329 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1330 # define gl_signbitf_OPTIMIZED_MACRO
1331 # define gl_signbitf(arg) \
1332 ({ union { float _value; \
1333 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1335 _m._value = (arg); \
1336 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1339 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1340 # define gl_signbitd_OPTIMIZED_MACRO
1341 # define gl_signbitd(arg) \
1342 ({ union { double _value; \
1343 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1345 _m._value = (arg); \
1346 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1349 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1350 # define gl_signbitl_OPTIMIZED_MACRO
1351 # define gl_signbitl(arg) \
1352 ({ union { long double _value; \
1353 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1355 _m._value = (arg); \
1356 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1360 # define signbit(x) \
1361 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1362 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1367 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1369 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1372 #elif defined GNULIB_POSIXCHECK
1373 # if defined signbit
1374 _GL_WARN_REAL_FLOATING_DECL (signbit);
1376 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1381 #endif /* _@GUARD_PREFIX@_MATH_H */
1382 #endif /* _@GUARD_PREFIX@_MATH_H */