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");
560 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
562 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
563 _GL_CXXALIASWARN (fmodf);
564 #elif defined GNULIB_POSIXCHECK
566 # if HAVE_RAW_DECL_FMODF
567 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
568 "use gnulib module fmodf for portability");
576 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
577 If x is zero: mantissa = x, exp = 0.
578 If x is infinite or NaN: mantissa = x, exp unspecified.
579 Store exp in *EXPPTR and return mantissa. */
581 # if @REPLACE_FREXPF@
582 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
584 # define frexpf rpl_frexpf
586 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
587 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
591 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
593 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
595 _GL_CXXALIASWARN (frexpf);
596 #elif defined GNULIB_POSIXCHECK
598 # if HAVE_RAW_DECL_FREXPF
599 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
600 "use gnulib module frexpf for portability");
607 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
608 If x is zero: mantissa = x, exp = 0.
609 If x is infinite or NaN: mantissa = x, exp unspecified.
610 Store exp in *EXPPTR and return mantissa. */
613 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
614 # define frexp rpl_frexp
616 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
617 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
619 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
621 _GL_CXXALIASWARN (frexp);
622 #elif defined GNULIB_POSIXCHECK
624 /* Assume frexp is always declared. */
625 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
626 "use gnulib module frexp for portability");
632 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
633 If x is zero: mantissa = x, exp = 0.
634 If x is infinite or NaN: mantissa = x, exp unspecified.
635 Store exp in *EXPPTR and return mantissa. */
636 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
637 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
639 # define frexpl rpl_frexpl
641 _GL_FUNCDECL_RPL (frexpl, long double,
642 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
643 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
645 # if !@HAVE_DECL_FREXPL@
646 _GL_FUNCDECL_SYS (frexpl, long double,
647 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
650 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
653 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
654 _GL_CXXALIASWARN (frexpl);
656 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
658 # if HAVE_RAW_DECL_FREXPL
659 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
660 "use gnulib module frexpl for portability");
665 /* Return x * 2^exp. */
669 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
671 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
672 _GL_CXXALIASWARN (ldexpf);
673 #elif defined GNULIB_POSIXCHECK
675 # if HAVE_RAW_DECL_LDEXPF
676 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
677 "use gnulib module ldexpf for portability");
681 /* Return x * 2^exp. */
682 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
683 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
685 # define ldexpl rpl_ldexpl
687 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
688 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
690 # if !@HAVE_DECL_LDEXPL@
691 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
694 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
698 _GL_CXXALIASWARN (ldexpl);
700 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
702 # if HAVE_RAW_DECL_LDEXPL
703 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
704 "use gnulib module ldexpl for portability");
710 # if !@HAVE_DECL_LOGB@
711 _GL_EXTERN_C double logb (double x);
713 #elif defined GNULIB_POSIXCHECK
715 # if HAVE_RAW_DECL_LOGB
716 _GL_WARN_ON_USE (logb, "logb is unportable - "
717 "use gnulib module logb for portability");
725 _GL_FUNCDECL_SYS (logf, float, (float x));
727 _GL_CXXALIAS_SYS (logf, float, (float x));
728 _GL_CXXALIASWARN (logf);
729 #elif defined GNULIB_POSIXCHECK
731 # if HAVE_RAW_DECL_LOGF
732 _GL_WARN_ON_USE (logf, "logf is unportable - "
733 "use gnulib module logf for portability");
738 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
739 _GL_FUNCDECL_SYS (logl, long double, (long double x));
741 _GL_CXXALIAS_SYS (logl, long double, (long double x));
742 _GL_CXXALIASWARN (logl);
743 #elif defined GNULIB_POSIXCHECK
745 # if HAVE_RAW_DECL_LOGL
746 _GL_WARN_ON_USE (logl, "logl is unportable - "
747 "use gnulib module mathl for portability");
755 _GL_FUNCDECL_SYS (log10f, float, (float x));
757 _GL_CXXALIAS_SYS (log10f, float, (float x));
758 _GL_CXXALIASWARN (log10f);
759 #elif defined GNULIB_POSIXCHECK
761 # if HAVE_RAW_DECL_LOG10F
762 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
763 "use gnulib module log10f for portability");
771 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
773 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
774 _GL_CXXALIASWARN (modff);
775 #elif defined GNULIB_POSIXCHECK
777 # if HAVE_RAW_DECL_MODFF
778 _GL_WARN_ON_USE (modff, "modff is unportable - "
779 "use gnulib module modff for portability");
787 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
789 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
790 _GL_CXXALIASWARN (powf);
791 #elif defined GNULIB_POSIXCHECK
793 # if HAVE_RAW_DECL_POWF
794 _GL_WARN_ON_USE (powf, "powf is unportable - "
795 "use gnulib module powf for portability");
802 _GL_FUNCDECL_SYS (rintf, float, (float x));
804 _GL_CXXALIAS_SYS (rintf, float, (float x));
805 _GL_CXXALIASWARN (rintf);
806 #elif defined GNULIB_POSIXCHECK
808 # if HAVE_RAW_DECL_RINTF
809 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
810 "use gnulib module rintf for portability");
816 _GL_FUNCDECL_SYS (rint, double, (double x));
818 _GL_CXXALIAS_SYS (rint, double, (double x));
819 _GL_CXXALIASWARN (rint);
820 #elif defined GNULIB_POSIXCHECK
822 # if HAVE_RAW_DECL_RINT
823 _GL_WARN_ON_USE (rint, "rint is unportable - "
824 "use gnulib module rint for portability");
830 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
832 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
833 _GL_CXXALIASWARN (rintl);
834 #elif defined GNULIB_POSIXCHECK
836 # if HAVE_RAW_DECL_RINTL
837 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
838 "use gnulib module rintl for portability");
844 # if @REPLACE_ROUNDF@
845 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
847 # define roundf rpl_roundf
849 _GL_FUNCDECL_RPL (roundf, float, (float x));
850 _GL_CXXALIAS_RPL (roundf, float, (float x));
852 # if !@HAVE_DECL_ROUNDF@
853 _GL_FUNCDECL_SYS (roundf, float, (float x));
855 _GL_CXXALIAS_SYS (roundf, float, (float x));
857 _GL_CXXALIASWARN (roundf);
858 #elif defined GNULIB_POSIXCHECK
860 # if HAVE_RAW_DECL_ROUNDF
861 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
862 "use gnulib module roundf for portability");
868 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
870 # define round rpl_round
872 _GL_FUNCDECL_RPL (round, double, (double x));
873 _GL_CXXALIAS_RPL (round, double, (double x));
875 # if !@HAVE_DECL_ROUND@
876 _GL_FUNCDECL_SYS (round, double, (double x));
878 _GL_CXXALIAS_SYS (round, double, (double x));
880 _GL_CXXALIASWARN (round);
881 #elif defined GNULIB_POSIXCHECK
883 # if HAVE_RAW_DECL_ROUND
884 _GL_WARN_ON_USE (round, "round is unportable - "
885 "use gnulib module round for portability");
890 # if @REPLACE_ROUNDL@
891 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
893 # define roundl rpl_roundl
895 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
896 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
898 # if !@HAVE_DECL_ROUNDL@
899 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
901 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
903 _GL_CXXALIASWARN (roundl);
904 #elif defined GNULIB_POSIXCHECK
906 # if HAVE_RAW_DECL_ROUNDL
907 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
908 "use gnulib module roundl for portability");
916 _GL_FUNCDECL_SYS (sinf, float, (float x));
918 _GL_CXXALIAS_SYS (sinf, float, (float x));
919 _GL_CXXALIASWARN (sinf);
920 #elif defined GNULIB_POSIXCHECK
922 # if HAVE_RAW_DECL_SINF
923 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
924 "use gnulib module sinf for portability");
929 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
930 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
932 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
933 _GL_CXXALIASWARN (sinl);
934 #elif defined GNULIB_POSIXCHECK
936 # if HAVE_RAW_DECL_SINL
937 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
938 "use gnulib module mathl for portability");
946 _GL_FUNCDECL_SYS (sinhf, float, (float x));
948 _GL_CXXALIAS_SYS (sinhf, float, (float x));
949 _GL_CXXALIASWARN (sinhf);
950 #elif defined GNULIB_POSIXCHECK
952 # if HAVE_RAW_DECL_SINHF
953 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
954 "use gnulib module sinhf for portability");
962 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
964 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
965 _GL_CXXALIASWARN (sqrtf);
966 #elif defined GNULIB_POSIXCHECK
968 # if HAVE_RAW_DECL_SQRTF
969 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
970 "use gnulib module sqrtf for portability");
975 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
976 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
978 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
979 _GL_CXXALIASWARN (sqrtl);
980 #elif defined GNULIB_POSIXCHECK
982 # if HAVE_RAW_DECL_SQRTL
983 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
984 "use gnulib module mathl for portability");
992 _GL_FUNCDECL_SYS (tanf, float, (float x));
994 _GL_CXXALIAS_SYS (tanf, float, (float x));
995 _GL_CXXALIASWARN (tanf);
996 #elif defined GNULIB_POSIXCHECK
998 # if HAVE_RAW_DECL_TANF
999 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1000 "use gnulib module tanf for portability");
1005 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1006 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1008 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1009 _GL_CXXALIASWARN (tanl);
1010 #elif defined GNULIB_POSIXCHECK
1012 # if HAVE_RAW_DECL_TANL
1013 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1014 "use gnulib module mathl for portability");
1022 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1024 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1025 _GL_CXXALIASWARN (tanhf);
1026 #elif defined GNULIB_POSIXCHECK
1028 # if HAVE_RAW_DECL_TANHF
1029 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1030 "use gnulib module tanhf for portability");
1036 # if @REPLACE_TRUNCF@
1037 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1038 # define truncf rpl_truncf
1040 _GL_FUNCDECL_RPL (truncf, float, (float x));
1041 _GL_CXXALIAS_RPL (truncf, float, (float x));
1043 # if !@HAVE_DECL_TRUNCF@
1044 _GL_FUNCDECL_SYS (truncf, float, (float x));
1046 _GL_CXXALIAS_SYS (truncf, float, (float x));
1048 _GL_CXXALIASWARN (truncf);
1049 #elif defined GNULIB_POSIXCHECK
1051 # if HAVE_RAW_DECL_TRUNCF
1052 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1053 "use gnulib module truncf for portability");
1058 # if @REPLACE_TRUNC@
1059 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1060 # define trunc rpl_trunc
1062 _GL_FUNCDECL_RPL (trunc, double, (double x));
1063 _GL_CXXALIAS_RPL (trunc, double, (double x));
1065 # if !@HAVE_DECL_TRUNC@
1066 _GL_FUNCDECL_SYS (trunc, double, (double x));
1068 _GL_CXXALIAS_SYS (trunc, double, (double x));
1070 _GL_CXXALIASWARN (trunc);
1071 #elif defined GNULIB_POSIXCHECK
1073 # if HAVE_RAW_DECL_TRUNC
1074 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1075 "use gnulib module trunc for portability");
1080 # if @REPLACE_TRUNCL@
1081 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1083 # define truncl rpl_truncl
1085 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1086 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1088 # if !@HAVE_DECL_TRUNCL@
1089 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1091 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1093 _GL_CXXALIASWARN (truncl);
1094 #elif defined GNULIB_POSIXCHECK
1096 # if HAVE_RAW_DECL_TRUNCL
1097 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1098 "use gnulib module truncl for portability");
1103 /* Definitions of function-like macros come here, after the function
1107 #if @GNULIB_ISFINITE@
1108 # if @REPLACE_ISFINITE@
1109 _GL_EXTERN_C int gl_isfinitef (float x);
1110 _GL_EXTERN_C int gl_isfinited (double x);
1111 _GL_EXTERN_C int gl_isfinitel (long double x);
1113 # define isfinite(x) \
1114 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1115 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1120 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1122 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1125 #elif defined GNULIB_POSIXCHECK
1126 # if defined isfinite
1127 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1129 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1135 # if @REPLACE_ISINF@
1136 _GL_EXTERN_C int gl_isinff (float x);
1137 _GL_EXTERN_C int gl_isinfd (double x);
1138 _GL_EXTERN_C int gl_isinfl (long double x);
1141 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1142 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1147 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1149 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1152 #elif defined GNULIB_POSIXCHECK
1154 _GL_WARN_REAL_FLOATING_DECL (isinf);
1156 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1162 /* Test for NaN for 'float' numbers. */
1164 /* The original <math.h> included above provides a declaration of isnan macro
1165 or (older) isnanf function. */
1167 /* GCC 4.0 and newer provides three built-ins for isnan. */
1169 # define isnanf(x) __builtin_isnanf ((float)(x))
1170 # elif defined isnan
1172 # define isnanf(x) isnan ((float)(x))
1175 /* Test whether X is a NaN. */
1177 # define isnanf rpl_isnanf
1178 _GL_EXTERN_C int isnanf (float x);
1183 /* Test for NaN for 'double' numbers.
1184 This function is a gnulib extension, unlike isnan() which applied only
1185 to 'double' numbers earlier but now is a type-generic macro. */
1187 /* The original <math.h> included above provides a declaration of isnan
1190 /* GCC 4.0 and newer provides three built-ins for isnan. */
1192 # define isnand(x) __builtin_isnan ((double)(x))
1195 # define isnand(x) isnan ((double)(x))
1198 /* Test whether X is a NaN. */
1200 # define isnand rpl_isnand
1201 _GL_EXTERN_C int isnand (double x);
1206 /* Test for NaN for 'long double' numbers. */
1208 /* The original <math.h> included above provides a declaration of isnan
1209 macro or (older) isnanl function. */
1211 /* GCC 4.0 and newer provides three built-ins for isnan. */
1213 # define isnanl(x) __builtin_isnanl ((long double)(x))
1214 # elif defined isnan
1216 # define isnanl(x) isnan ((long double)(x))
1219 /* Test whether X is a NaN. */
1221 # define isnanl rpl_isnanl
1222 _GL_EXTERN_C int isnanl (long double x);
1226 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1228 # if @REPLACE_ISNAN@
1229 /* We can't just use the isnanf macro (e.g.) as exposed by
1230 isnanf.h (e.g.) here, because those may end up being macros
1231 that recursively expand back to isnan. So use the gnulib
1232 replacements for them directly. */
1233 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1234 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1236 _GL_EXTERN_C int rpl_isnanf (float x);
1237 # define gl_isnan_f(x) rpl_isnanf (x)
1239 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1240 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1242 _GL_EXTERN_C int rpl_isnand (double x);
1243 # define gl_isnan_d(x) rpl_isnand (x)
1245 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1246 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1248 _GL_EXTERN_C int rpl_isnanl (long double x);
1249 # define gl_isnan_l(x) rpl_isnanl (x)
1253 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1254 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1256 # elif __GNUC__ >= 4
1259 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1260 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1261 __builtin_isnanf ((float)(x)))
1265 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1267 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1270 /* Ensure isnan is a macro. */
1272 # define isnan isnan
1275 #elif defined GNULIB_POSIXCHECK
1277 _GL_WARN_REAL_FLOATING_DECL (isnan);
1279 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1284 #if @GNULIB_SIGNBIT@
1285 # if @REPLACE_SIGNBIT_USING_GCC@
1287 /* GCC 4.0 and newer provides three built-ins for signbit. */
1288 # define signbit(x) \
1289 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1290 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1291 __builtin_signbitf (x))
1293 # if @REPLACE_SIGNBIT@
1295 _GL_EXTERN_C int gl_signbitf (float arg);
1296 _GL_EXTERN_C int gl_signbitd (double arg);
1297 _GL_EXTERN_C int gl_signbitl (long double arg);
1298 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1299 # define _GL_NUM_UINT_WORDS(type) \
1300 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1301 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1302 # define gl_signbitf_OPTIMIZED_MACRO
1303 # define gl_signbitf(arg) \
1304 ({ union { float _value; \
1305 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1307 _m._value = (arg); \
1308 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1311 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1312 # define gl_signbitd_OPTIMIZED_MACRO
1313 # define gl_signbitd(arg) \
1314 ({ union { double _value; \
1315 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1317 _m._value = (arg); \
1318 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1321 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1322 # define gl_signbitl_OPTIMIZED_MACRO
1323 # define gl_signbitl(arg) \
1324 ({ union { long double _value; \
1325 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1327 _m._value = (arg); \
1328 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1332 # define signbit(x) \
1333 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1334 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1339 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1341 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1344 #elif defined GNULIB_POSIXCHECK
1345 # if defined signbit
1346 _GL_WARN_REAL_FLOATING_DECL (signbit);
1348 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1353 #endif /* _@GUARD_PREFIX@_MATH_H */
1354 #endif /* _@GUARD_PREFIX@_MATH_H */