1 /* A GNU-like <math.h>.
3 Copyright (C) 2002-2003, 2007-2011 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@
460 _GL_FUNCDECL_SYS (floorf, float, (float x));
462 _GL_CXXALIAS_SYS (floorf, float, (float x));
464 _GL_CXXALIASWARN (floorf);
465 #elif defined GNULIB_POSIXCHECK
467 # if HAVE_RAW_DECL_FLOORF
468 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
469 "use gnulib module floorf for portability");
475 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
476 # define floor rpl_floor
478 _GL_FUNCDECL_RPL (floor, double, (double x));
479 _GL_CXXALIAS_RPL (floor, double, (double x));
481 _GL_CXXALIAS_SYS (floor, double, (double x));
483 _GL_CXXALIASWARN (floor);
487 # if @REPLACE_FLOORL@
488 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
490 # define floorl rpl_floorl
492 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
493 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
495 # if !@HAVE_DECL_FLOORL@
496 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
498 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
500 _GL_CXXALIASWARN (floorl);
501 #elif defined GNULIB_POSIXCHECK
503 # if HAVE_RAW_DECL_FLOORL
504 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
505 "use gnulib module floorl for portability");
512 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
514 # define fmaf rpl_fmaf
516 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
517 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
520 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
522 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
524 _GL_CXXALIASWARN (fmaf);
525 #elif defined GNULIB_POSIXCHECK
527 # if HAVE_RAW_DECL_FMAF
528 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
529 "use gnulib module fmaf for portability");
535 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
539 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
540 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
543 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
545 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
547 _GL_CXXALIASWARN (fma);
548 #elif defined GNULIB_POSIXCHECK
550 # if HAVE_RAW_DECL_FMA
551 _GL_WARN_ON_USE (fma, "fma is unportable - "
552 "use gnulib module fma for portability");
558 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
560 # define fmal rpl_fmal
562 _GL_FUNCDECL_RPL (fmal, long double,
563 (long double x, long double y, long double z));
564 _GL_CXXALIAS_RPL (fmal, long double,
565 (long double x, long double y, long double z));
568 _GL_FUNCDECL_SYS (fmal, long double,
569 (long double x, long double y, long double z));
571 _GL_CXXALIAS_SYS (fmal, long double,
572 (long double x, long double y, long double z));
574 _GL_CXXALIASWARN (fmal);
575 #elif defined GNULIB_POSIXCHECK
577 # if HAVE_RAW_DECL_FMAL
578 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
579 "use gnulib module fmal for portability");
587 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
589 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
590 _GL_CXXALIASWARN (fmodf);
591 #elif defined GNULIB_POSIXCHECK
593 # if HAVE_RAW_DECL_FMODF
594 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
595 "use gnulib module fmodf for portability");
603 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
604 If x is zero: mantissa = x, exp = 0.
605 If x is infinite or NaN: mantissa = x, exp unspecified.
606 Store exp in *EXPPTR and return mantissa. */
608 # if @REPLACE_FREXPF@
609 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
611 # define frexpf rpl_frexpf
613 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
614 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
618 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
620 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
622 _GL_CXXALIASWARN (frexpf);
623 #elif defined GNULIB_POSIXCHECK
625 # if HAVE_RAW_DECL_FREXPF
626 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
627 "use gnulib module frexpf for portability");
634 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
635 If x is zero: mantissa = x, exp = 0.
636 If x is infinite or NaN: mantissa = x, exp unspecified.
637 Store exp in *EXPPTR and return mantissa. */
640 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
641 # define frexp rpl_frexp
643 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
644 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
646 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
648 _GL_CXXALIASWARN (frexp);
649 #elif defined GNULIB_POSIXCHECK
651 /* Assume frexp is always declared. */
652 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
653 "use gnulib module frexp for portability");
659 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
660 If x is zero: mantissa = x, exp = 0.
661 If x is infinite or NaN: mantissa = x, exp unspecified.
662 Store exp in *EXPPTR and return mantissa. */
663 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
664 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
666 # define frexpl rpl_frexpl
668 _GL_FUNCDECL_RPL (frexpl, long double,
669 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
670 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
672 # if !@HAVE_DECL_FREXPL@
673 _GL_FUNCDECL_SYS (frexpl, long double,
674 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
677 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
680 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
681 _GL_CXXALIASWARN (frexpl);
683 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
685 # if HAVE_RAW_DECL_FREXPL
686 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
687 "use gnulib module frexpl for portability");
692 /* Return x * 2^exp. */
696 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
698 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
699 _GL_CXXALIASWARN (ldexpf);
700 #elif defined GNULIB_POSIXCHECK
702 # if HAVE_RAW_DECL_LDEXPF
703 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
704 "use gnulib module ldexpf for portability");
708 /* Return x * 2^exp. */
709 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
710 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
712 # define ldexpl rpl_ldexpl
714 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
715 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
717 # if !@HAVE_DECL_LDEXPL@
718 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
721 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
725 _GL_CXXALIASWARN (ldexpl);
727 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
729 # if HAVE_RAW_DECL_LDEXPL
730 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
731 "use gnulib module ldexpl for portability");
737 # if !@HAVE_DECL_LOGB@
738 _GL_EXTERN_C double logb (double x);
740 #elif defined GNULIB_POSIXCHECK
742 # if HAVE_RAW_DECL_LOGB
743 _GL_WARN_ON_USE (logb, "logb is unportable - "
744 "use gnulib module logb for portability");
752 _GL_FUNCDECL_SYS (logf, float, (float x));
754 _GL_CXXALIAS_SYS (logf, float, (float x));
755 _GL_CXXALIASWARN (logf);
756 #elif defined GNULIB_POSIXCHECK
758 # if HAVE_RAW_DECL_LOGF
759 _GL_WARN_ON_USE (logf, "logf is unportable - "
760 "use gnulib module logf for portability");
765 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
766 _GL_FUNCDECL_SYS (logl, long double, (long double x));
768 _GL_CXXALIAS_SYS (logl, long double, (long double x));
769 _GL_CXXALIASWARN (logl);
770 #elif defined GNULIB_POSIXCHECK
772 # if HAVE_RAW_DECL_LOGL
773 _GL_WARN_ON_USE (logl, "logl is unportable - "
774 "use gnulib module mathl for portability");
782 _GL_FUNCDECL_SYS (log10f, float, (float x));
784 _GL_CXXALIAS_SYS (log10f, float, (float x));
785 _GL_CXXALIASWARN (log10f);
786 #elif defined GNULIB_POSIXCHECK
788 # if HAVE_RAW_DECL_LOG10F
789 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
790 "use gnulib module log10f for portability");
798 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
800 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
801 _GL_CXXALIASWARN (modff);
802 #elif defined GNULIB_POSIXCHECK
804 # if HAVE_RAW_DECL_MODFF
805 _GL_WARN_ON_USE (modff, "modff is unportable - "
806 "use gnulib module modff for portability");
814 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
816 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
817 _GL_CXXALIASWARN (powf);
818 #elif defined GNULIB_POSIXCHECK
820 # if HAVE_RAW_DECL_POWF
821 _GL_WARN_ON_USE (powf, "powf is unportable - "
822 "use gnulib module powf for portability");
829 _GL_FUNCDECL_SYS (rintf, float, (float x));
831 _GL_CXXALIAS_SYS (rintf, float, (float x));
832 _GL_CXXALIASWARN (rintf);
833 #elif defined GNULIB_POSIXCHECK
835 # if HAVE_RAW_DECL_RINTF
836 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
837 "use gnulib module rintf for portability");
843 _GL_FUNCDECL_SYS (rint, double, (double x));
845 _GL_CXXALIAS_SYS (rint, double, (double x));
846 _GL_CXXALIASWARN (rint);
847 #elif defined GNULIB_POSIXCHECK
849 # if HAVE_RAW_DECL_RINT
850 _GL_WARN_ON_USE (rint, "rint is unportable - "
851 "use gnulib module rint for portability");
857 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
859 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
860 _GL_CXXALIASWARN (rintl);
861 #elif defined GNULIB_POSIXCHECK
863 # if HAVE_RAW_DECL_RINTL
864 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
865 "use gnulib module rintl for portability");
871 # if @REPLACE_ROUNDF@
872 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
874 # define roundf rpl_roundf
876 _GL_FUNCDECL_RPL (roundf, float, (float x));
877 _GL_CXXALIAS_RPL (roundf, float, (float x));
879 # if !@HAVE_DECL_ROUNDF@
880 _GL_FUNCDECL_SYS (roundf, float, (float x));
882 _GL_CXXALIAS_SYS (roundf, float, (float x));
884 _GL_CXXALIASWARN (roundf);
885 #elif defined GNULIB_POSIXCHECK
887 # if HAVE_RAW_DECL_ROUNDF
888 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
889 "use gnulib module roundf for portability");
895 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
897 # define round rpl_round
899 _GL_FUNCDECL_RPL (round, double, (double x));
900 _GL_CXXALIAS_RPL (round, double, (double x));
902 # if !@HAVE_DECL_ROUND@
903 _GL_FUNCDECL_SYS (round, double, (double x));
905 _GL_CXXALIAS_SYS (round, double, (double x));
907 _GL_CXXALIASWARN (round);
908 #elif defined GNULIB_POSIXCHECK
910 # if HAVE_RAW_DECL_ROUND
911 _GL_WARN_ON_USE (round, "round is unportable - "
912 "use gnulib module round for portability");
917 # if @REPLACE_ROUNDL@
918 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
920 # define roundl rpl_roundl
922 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
923 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
925 # if !@HAVE_DECL_ROUNDL@
926 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
928 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
930 _GL_CXXALIASWARN (roundl);
931 #elif defined GNULIB_POSIXCHECK
933 # if HAVE_RAW_DECL_ROUNDL
934 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
935 "use gnulib module roundl for portability");
943 _GL_FUNCDECL_SYS (sinf, float, (float x));
945 _GL_CXXALIAS_SYS (sinf, float, (float x));
946 _GL_CXXALIASWARN (sinf);
947 #elif defined GNULIB_POSIXCHECK
949 # if HAVE_RAW_DECL_SINF
950 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
951 "use gnulib module sinf for portability");
956 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
957 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
959 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
960 _GL_CXXALIASWARN (sinl);
961 #elif defined GNULIB_POSIXCHECK
963 # if HAVE_RAW_DECL_SINL
964 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
965 "use gnulib module mathl for portability");
973 _GL_FUNCDECL_SYS (sinhf, float, (float x));
975 _GL_CXXALIAS_SYS (sinhf, float, (float x));
976 _GL_CXXALIASWARN (sinhf);
977 #elif defined GNULIB_POSIXCHECK
979 # if HAVE_RAW_DECL_SINHF
980 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
981 "use gnulib module sinhf for portability");
989 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
991 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
992 _GL_CXXALIASWARN (sqrtf);
993 #elif defined GNULIB_POSIXCHECK
995 # if HAVE_RAW_DECL_SQRTF
996 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
997 "use gnulib module sqrtf for portability");
1002 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1003 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1005 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1006 _GL_CXXALIASWARN (sqrtl);
1007 #elif defined GNULIB_POSIXCHECK
1009 # if HAVE_RAW_DECL_SQRTL
1010 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1011 "use gnulib module mathl for portability");
1019 _GL_FUNCDECL_SYS (tanf, float, (float x));
1021 _GL_CXXALIAS_SYS (tanf, float, (float x));
1022 _GL_CXXALIASWARN (tanf);
1023 #elif defined GNULIB_POSIXCHECK
1025 # if HAVE_RAW_DECL_TANF
1026 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1027 "use gnulib module tanf for portability");
1032 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1033 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1035 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1036 _GL_CXXALIASWARN (tanl);
1037 #elif defined GNULIB_POSIXCHECK
1039 # if HAVE_RAW_DECL_TANL
1040 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1041 "use gnulib module mathl for portability");
1049 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1051 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1052 _GL_CXXALIASWARN (tanhf);
1053 #elif defined GNULIB_POSIXCHECK
1055 # if HAVE_RAW_DECL_TANHF
1056 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1057 "use gnulib module tanhf for portability");
1063 # if @REPLACE_TRUNCF@
1064 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1065 # define truncf rpl_truncf
1067 _GL_FUNCDECL_RPL (truncf, float, (float x));
1068 _GL_CXXALIAS_RPL (truncf, float, (float x));
1070 # if !@HAVE_DECL_TRUNCF@
1071 _GL_FUNCDECL_SYS (truncf, float, (float x));
1073 _GL_CXXALIAS_SYS (truncf, float, (float x));
1075 _GL_CXXALIASWARN (truncf);
1076 #elif defined GNULIB_POSIXCHECK
1078 # if HAVE_RAW_DECL_TRUNCF
1079 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1080 "use gnulib module truncf for portability");
1085 # if @REPLACE_TRUNC@
1086 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1087 # define trunc rpl_trunc
1089 _GL_FUNCDECL_RPL (trunc, double, (double x));
1090 _GL_CXXALIAS_RPL (trunc, double, (double x));
1092 # if !@HAVE_DECL_TRUNC@
1093 _GL_FUNCDECL_SYS (trunc, double, (double x));
1095 _GL_CXXALIAS_SYS (trunc, double, (double x));
1097 _GL_CXXALIASWARN (trunc);
1098 #elif defined GNULIB_POSIXCHECK
1100 # if HAVE_RAW_DECL_TRUNC
1101 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1102 "use gnulib module trunc for portability");
1107 # if @REPLACE_TRUNCL@
1108 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1110 # define truncl rpl_truncl
1112 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1113 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1115 # if !@HAVE_DECL_TRUNCL@
1116 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1118 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1120 _GL_CXXALIASWARN (truncl);
1121 #elif defined GNULIB_POSIXCHECK
1123 # if HAVE_RAW_DECL_TRUNCL
1124 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1125 "use gnulib module truncl for portability");
1130 /* Definitions of function-like macros come here, after the function
1134 #if @GNULIB_ISFINITE@
1135 # if @REPLACE_ISFINITE@
1136 _GL_EXTERN_C int gl_isfinitef (float x);
1137 _GL_EXTERN_C int gl_isfinited (double x);
1138 _GL_EXTERN_C int gl_isfinitel (long double x);
1140 # define isfinite(x) \
1141 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1142 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1147 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1149 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1152 #elif defined GNULIB_POSIXCHECK
1153 # if defined isfinite
1154 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1156 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1162 # if @REPLACE_ISINF@
1163 _GL_EXTERN_C int gl_isinff (float x);
1164 _GL_EXTERN_C int gl_isinfd (double x);
1165 _GL_EXTERN_C int gl_isinfl (long double x);
1168 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1169 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1174 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1176 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1179 #elif defined GNULIB_POSIXCHECK
1181 _GL_WARN_REAL_FLOATING_DECL (isinf);
1183 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1189 /* Test for NaN for 'float' numbers. */
1191 /* The original <math.h> included above provides a declaration of isnan macro
1192 or (older) isnanf function. */
1194 /* GCC 4.0 and newer provides three built-ins for isnan. */
1196 # define isnanf(x) __builtin_isnanf ((float)(x))
1197 # elif defined isnan
1199 # define isnanf(x) isnan ((float)(x))
1202 /* Test whether X is a NaN. */
1204 # define isnanf rpl_isnanf
1205 _GL_EXTERN_C int isnanf (float x);
1210 /* Test for NaN for 'double' numbers.
1211 This function is a gnulib extension, unlike isnan() which applied only
1212 to 'double' numbers earlier but now is a type-generic macro. */
1214 /* The original <math.h> included above provides a declaration of isnan
1217 /* GCC 4.0 and newer provides three built-ins for isnan. */
1219 # define isnand(x) __builtin_isnan ((double)(x))
1222 # define isnand(x) isnan ((double)(x))
1225 /* Test whether X is a NaN. */
1227 # define isnand rpl_isnand
1228 _GL_EXTERN_C int isnand (double x);
1233 /* Test for NaN for 'long double' numbers. */
1235 /* The original <math.h> included above provides a declaration of isnan
1236 macro or (older) isnanl function. */
1238 /* GCC 4.0 and newer provides three built-ins for isnan. */
1240 # define isnanl(x) __builtin_isnanl ((long double)(x))
1241 # elif defined isnan
1243 # define isnanl(x) isnan ((long double)(x))
1246 /* Test whether X is a NaN. */
1248 # define isnanl rpl_isnanl
1249 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1253 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1255 # if @REPLACE_ISNAN@
1256 /* We can't just use the isnanf macro (e.g.) as exposed by
1257 isnanf.h (e.g.) here, because those may end up being macros
1258 that recursively expand back to isnan. So use the gnulib
1259 replacements for them directly. */
1260 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1261 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1263 _GL_EXTERN_C int rpl_isnanf (float x);
1264 # define gl_isnan_f(x) rpl_isnanf (x)
1266 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1267 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1269 _GL_EXTERN_C int rpl_isnand (double x);
1270 # define gl_isnan_d(x) rpl_isnand (x)
1272 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1273 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1275 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1276 # define gl_isnan_l(x) rpl_isnanl (x)
1280 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1281 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1283 # elif __GNUC__ >= 4
1286 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1287 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1288 __builtin_isnanf ((float)(x)))
1292 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1294 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1297 /* Ensure isnan is a macro. */
1299 # define isnan isnan
1302 #elif defined GNULIB_POSIXCHECK
1304 _GL_WARN_REAL_FLOATING_DECL (isnan);
1306 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1311 #if @GNULIB_SIGNBIT@
1312 # if @REPLACE_SIGNBIT_USING_GCC@
1314 /* GCC 4.0 and newer provides three built-ins for signbit. */
1315 # define signbit(x) \
1316 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1317 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1318 __builtin_signbitf (x))
1320 # if @REPLACE_SIGNBIT@
1322 _GL_EXTERN_C int gl_signbitf (float arg);
1323 _GL_EXTERN_C int gl_signbitd (double arg);
1324 _GL_EXTERN_C int gl_signbitl (long double arg);
1325 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1326 # define _GL_NUM_UINT_WORDS(type) \
1327 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1328 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1329 # define gl_signbitf_OPTIMIZED_MACRO
1330 # define gl_signbitf(arg) \
1331 ({ union { float _value; \
1332 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1334 _m._value = (arg); \
1335 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1338 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1339 # define gl_signbitd_OPTIMIZED_MACRO
1340 # define gl_signbitd(arg) \
1341 ({ union { double _value; \
1342 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1344 _m._value = (arg); \
1345 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1348 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1349 # define gl_signbitl_OPTIMIZED_MACRO
1350 # define gl_signbitl(arg) \
1351 ({ union { long double _value; \
1352 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1354 _m._value = (arg); \
1355 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1359 # define signbit(x) \
1360 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1361 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1366 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1368 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1371 #elif defined GNULIB_POSIXCHECK
1372 # if defined signbit
1373 _GL_WARN_REAL_FLOATING_DECL (signbit);
1375 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1380 #endif /* _@GUARD_PREFIX@_MATH_H */
1381 #endif /* _@GUARD_PREFIX@_MATH_H */