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)
516 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
517 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
520 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
522 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
524 _GL_CXXALIASWARN (fma);
525 #elif defined GNULIB_POSIXCHECK
527 # if HAVE_RAW_DECL_FMA
528 _GL_WARN_ON_USE (fma, "fma is unportable - "
529 "use gnulib module fma for portability");
537 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
539 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
540 _GL_CXXALIASWARN (fmodf);
541 #elif defined GNULIB_POSIXCHECK
543 # if HAVE_RAW_DECL_FMODF
544 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
545 "use gnulib module fmodf for portability");
553 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
554 If x is zero: mantissa = x, exp = 0.
555 If x is infinite or NaN: mantissa = x, exp unspecified.
556 Store exp in *EXPPTR and return mantissa. */
558 # if @REPLACE_FREXPF@
559 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
561 # define frexpf rpl_frexpf
563 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
564 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
568 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
570 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
572 _GL_CXXALIASWARN (frexpf);
573 #elif defined GNULIB_POSIXCHECK
575 # if HAVE_RAW_DECL_FREXPF
576 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
577 "use gnulib module frexpf for portability");
584 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
585 If x is zero: mantissa = x, exp = 0.
586 If x is infinite or NaN: mantissa = x, exp unspecified.
587 Store exp in *EXPPTR and return mantissa. */
590 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
591 # define frexp rpl_frexp
593 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
594 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
596 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
598 _GL_CXXALIASWARN (frexp);
599 #elif defined GNULIB_POSIXCHECK
601 /* Assume frexp is always declared. */
602 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
603 "use gnulib module frexp for portability");
609 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
610 If x is zero: mantissa = x, exp = 0.
611 If x is infinite or NaN: mantissa = x, exp unspecified.
612 Store exp in *EXPPTR and return mantissa. */
613 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
614 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
616 # define frexpl rpl_frexpl
618 _GL_FUNCDECL_RPL (frexpl, long double,
619 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
620 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
622 # if !@HAVE_DECL_FREXPL@
623 _GL_FUNCDECL_SYS (frexpl, long double,
624 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
627 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
630 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
631 _GL_CXXALIASWARN (frexpl);
633 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
635 # if HAVE_RAW_DECL_FREXPL
636 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
637 "use gnulib module frexpl for portability");
642 /* Return x * 2^exp. */
646 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
648 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
649 _GL_CXXALIASWARN (ldexpf);
650 #elif defined GNULIB_POSIXCHECK
652 # if HAVE_RAW_DECL_LDEXPF
653 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
654 "use gnulib module ldexpf for portability");
658 /* Return x * 2^exp. */
659 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
660 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
662 # define ldexpl rpl_ldexpl
664 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
665 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
667 # if !@HAVE_DECL_LDEXPL@
668 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
671 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
675 _GL_CXXALIASWARN (ldexpl);
677 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
679 # if HAVE_RAW_DECL_LDEXPL
680 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
681 "use gnulib module ldexpl for portability");
687 # if !@HAVE_DECL_LOGB@
688 _GL_EXTERN_C double logb (double x);
690 #elif defined GNULIB_POSIXCHECK
692 # if HAVE_RAW_DECL_LOGB
693 _GL_WARN_ON_USE (logb, "logb is unportable - "
694 "use gnulib module logb for portability");
702 _GL_FUNCDECL_SYS (logf, float, (float x));
704 _GL_CXXALIAS_SYS (logf, float, (float x));
705 _GL_CXXALIASWARN (logf);
706 #elif defined GNULIB_POSIXCHECK
708 # if HAVE_RAW_DECL_LOGF
709 _GL_WARN_ON_USE (logf, "logf is unportable - "
710 "use gnulib module logf for portability");
715 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
716 _GL_FUNCDECL_SYS (logl, long double, (long double x));
718 _GL_CXXALIAS_SYS (logl, long double, (long double x));
719 _GL_CXXALIASWARN (logl);
720 #elif defined GNULIB_POSIXCHECK
722 # if HAVE_RAW_DECL_LOGL
723 _GL_WARN_ON_USE (logl, "logl is unportable - "
724 "use gnulib module mathl for portability");
732 _GL_FUNCDECL_SYS (log10f, float, (float x));
734 _GL_CXXALIAS_SYS (log10f, float, (float x));
735 _GL_CXXALIASWARN (log10f);
736 #elif defined GNULIB_POSIXCHECK
738 # if HAVE_RAW_DECL_LOG10F
739 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
740 "use gnulib module log10f for portability");
748 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
750 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
751 _GL_CXXALIASWARN (modff);
752 #elif defined GNULIB_POSIXCHECK
754 # if HAVE_RAW_DECL_MODFF
755 _GL_WARN_ON_USE (modff, "modff is unportable - "
756 "use gnulib module modff for portability");
764 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
766 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
767 _GL_CXXALIASWARN (powf);
768 #elif defined GNULIB_POSIXCHECK
770 # if HAVE_RAW_DECL_POWF
771 _GL_WARN_ON_USE (powf, "powf is unportable - "
772 "use gnulib module powf for portability");
779 _GL_FUNCDECL_SYS (rintf, float, (float x));
781 _GL_CXXALIAS_SYS (rintf, float, (float x));
782 _GL_CXXALIASWARN (rintf);
783 #elif defined GNULIB_POSIXCHECK
785 # if HAVE_RAW_DECL_RINTF
786 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
787 "use gnulib module rintf for portability");
793 _GL_FUNCDECL_SYS (rint, double, (double x));
795 _GL_CXXALIAS_SYS (rint, double, (double x));
796 _GL_CXXALIASWARN (rint);
797 #elif defined GNULIB_POSIXCHECK
799 # if HAVE_RAW_DECL_RINT
800 _GL_WARN_ON_USE (rint, "rint is unportable - "
801 "use gnulib module rint for portability");
807 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
809 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
810 _GL_CXXALIASWARN (rintl);
811 #elif defined GNULIB_POSIXCHECK
813 # if HAVE_RAW_DECL_RINTL
814 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
815 "use gnulib module rintl for portability");
821 # if @REPLACE_ROUNDF@
822 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
824 # define roundf rpl_roundf
826 _GL_FUNCDECL_RPL (roundf, float, (float x));
827 _GL_CXXALIAS_RPL (roundf, float, (float x));
829 # if !@HAVE_DECL_ROUNDF@
830 _GL_FUNCDECL_SYS (roundf, float, (float x));
832 _GL_CXXALIAS_SYS (roundf, float, (float x));
834 _GL_CXXALIASWARN (roundf);
835 #elif defined GNULIB_POSIXCHECK
837 # if HAVE_RAW_DECL_ROUNDF
838 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
839 "use gnulib module roundf for portability");
845 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
847 # define round rpl_round
849 _GL_FUNCDECL_RPL (round, double, (double x));
850 _GL_CXXALIAS_RPL (round, double, (double x));
852 # if !@HAVE_DECL_ROUND@
853 _GL_FUNCDECL_SYS (round, double, (double x));
855 _GL_CXXALIAS_SYS (round, double, (double x));
857 _GL_CXXALIASWARN (round);
858 #elif defined GNULIB_POSIXCHECK
860 # if HAVE_RAW_DECL_ROUND
861 _GL_WARN_ON_USE (round, "round is unportable - "
862 "use gnulib module round for portability");
867 # if @REPLACE_ROUNDL@
868 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
870 # define roundl rpl_roundl
872 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
873 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
875 # if !@HAVE_DECL_ROUNDL@
876 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
878 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
880 _GL_CXXALIASWARN (roundl);
881 #elif defined GNULIB_POSIXCHECK
883 # if HAVE_RAW_DECL_ROUNDL
884 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
885 "use gnulib module roundl for portability");
893 _GL_FUNCDECL_SYS (sinf, float, (float x));
895 _GL_CXXALIAS_SYS (sinf, float, (float x));
896 _GL_CXXALIASWARN (sinf);
897 #elif defined GNULIB_POSIXCHECK
899 # if HAVE_RAW_DECL_SINF
900 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
901 "use gnulib module sinf for portability");
906 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
907 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
909 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
910 _GL_CXXALIASWARN (sinl);
911 #elif defined GNULIB_POSIXCHECK
913 # if HAVE_RAW_DECL_SINL
914 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
915 "use gnulib module mathl for portability");
923 _GL_FUNCDECL_SYS (sinhf, float, (float x));
925 _GL_CXXALIAS_SYS (sinhf, float, (float x));
926 _GL_CXXALIASWARN (sinhf);
927 #elif defined GNULIB_POSIXCHECK
929 # if HAVE_RAW_DECL_SINHF
930 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
931 "use gnulib module sinhf for portability");
939 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
941 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
942 _GL_CXXALIASWARN (sqrtf);
943 #elif defined GNULIB_POSIXCHECK
945 # if HAVE_RAW_DECL_SQRTF
946 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
947 "use gnulib module sqrtf for portability");
952 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
953 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
955 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
956 _GL_CXXALIASWARN (sqrtl);
957 #elif defined GNULIB_POSIXCHECK
959 # if HAVE_RAW_DECL_SQRTL
960 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
961 "use gnulib module mathl for portability");
969 _GL_FUNCDECL_SYS (tanf, float, (float x));
971 _GL_CXXALIAS_SYS (tanf, float, (float x));
972 _GL_CXXALIASWARN (tanf);
973 #elif defined GNULIB_POSIXCHECK
975 # if HAVE_RAW_DECL_TANF
976 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
977 "use gnulib module tanf for portability");
982 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
983 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
985 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
986 _GL_CXXALIASWARN (tanl);
987 #elif defined GNULIB_POSIXCHECK
989 # if HAVE_RAW_DECL_TANL
990 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
991 "use gnulib module mathl for portability");
999 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1001 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1002 _GL_CXXALIASWARN (tanhf);
1003 #elif defined GNULIB_POSIXCHECK
1005 # if HAVE_RAW_DECL_TANHF
1006 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1007 "use gnulib module tanhf for portability");
1013 # if @REPLACE_TRUNCF@
1014 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1015 # define truncf rpl_truncf
1017 _GL_FUNCDECL_RPL (truncf, float, (float x));
1018 _GL_CXXALIAS_RPL (truncf, float, (float x));
1020 # if !@HAVE_DECL_TRUNCF@
1021 _GL_FUNCDECL_SYS (truncf, float, (float x));
1023 _GL_CXXALIAS_SYS (truncf, float, (float x));
1025 _GL_CXXALIASWARN (truncf);
1026 #elif defined GNULIB_POSIXCHECK
1028 # if HAVE_RAW_DECL_TRUNCF
1029 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1030 "use gnulib module truncf for portability");
1035 # if @REPLACE_TRUNC@
1036 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1037 # define trunc rpl_trunc
1039 _GL_FUNCDECL_RPL (trunc, double, (double x));
1040 _GL_CXXALIAS_RPL (trunc, double, (double x));
1042 # if !@HAVE_DECL_TRUNC@
1043 _GL_FUNCDECL_SYS (trunc, double, (double x));
1045 _GL_CXXALIAS_SYS (trunc, double, (double x));
1047 _GL_CXXALIASWARN (trunc);
1048 #elif defined GNULIB_POSIXCHECK
1050 # if HAVE_RAW_DECL_TRUNC
1051 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1052 "use gnulib module trunc for portability");
1057 # if @REPLACE_TRUNCL@
1058 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1060 # define truncl rpl_truncl
1062 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1063 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1065 # if !@HAVE_DECL_TRUNCL@
1066 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1068 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1070 _GL_CXXALIASWARN (truncl);
1071 #elif defined GNULIB_POSIXCHECK
1073 # if HAVE_RAW_DECL_TRUNCL
1074 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1075 "use gnulib module truncl for portability");
1080 /* Definitions of function-like macros come here, after the function
1084 #if @GNULIB_ISFINITE@
1085 # if @REPLACE_ISFINITE@
1086 _GL_EXTERN_C int gl_isfinitef (float x);
1087 _GL_EXTERN_C int gl_isfinited (double x);
1088 _GL_EXTERN_C int gl_isfinitel (long double x);
1090 # define isfinite(x) \
1091 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1092 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1097 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1099 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1102 #elif defined GNULIB_POSIXCHECK
1103 # if defined isfinite
1104 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1106 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1112 # if @REPLACE_ISINF@
1113 _GL_EXTERN_C int gl_isinff (float x);
1114 _GL_EXTERN_C int gl_isinfd (double x);
1115 _GL_EXTERN_C int gl_isinfl (long double x);
1118 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1119 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1124 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1126 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1129 #elif defined GNULIB_POSIXCHECK
1131 _GL_WARN_REAL_FLOATING_DECL (isinf);
1133 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1139 /* Test for NaN for 'float' numbers. */
1141 /* The original <math.h> included above provides a declaration of isnan macro
1142 or (older) isnanf function. */
1144 /* GCC 4.0 and newer provides three built-ins for isnan. */
1146 # define isnanf(x) __builtin_isnanf ((float)(x))
1147 # elif defined isnan
1149 # define isnanf(x) isnan ((float)(x))
1152 /* Test whether X is a NaN. */
1154 # define isnanf rpl_isnanf
1155 _GL_EXTERN_C int isnanf (float x);
1160 /* Test for NaN for 'double' numbers.
1161 This function is a gnulib extension, unlike isnan() which applied only
1162 to 'double' numbers earlier but now is a type-generic macro. */
1164 /* The original <math.h> included above provides a declaration of isnan
1167 /* GCC 4.0 and newer provides three built-ins for isnan. */
1169 # define isnand(x) __builtin_isnan ((double)(x))
1172 # define isnand(x) isnan ((double)(x))
1175 /* Test whether X is a NaN. */
1177 # define isnand rpl_isnand
1178 _GL_EXTERN_C int isnand (double x);
1183 /* Test for NaN for 'long double' numbers. */
1185 /* The original <math.h> included above provides a declaration of isnan
1186 macro or (older) isnanl function. */
1188 /* GCC 4.0 and newer provides three built-ins for isnan. */
1190 # define isnanl(x) __builtin_isnanl ((long double)(x))
1191 # elif defined isnan
1193 # define isnanl(x) isnan ((long double)(x))
1196 /* Test whether X is a NaN. */
1198 # define isnanl rpl_isnanl
1199 _GL_EXTERN_C int isnanl (long double x);
1203 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1205 # if @REPLACE_ISNAN@
1206 /* We can't just use the isnanf macro (e.g.) as exposed by
1207 isnanf.h (e.g.) here, because those may end up being macros
1208 that recursively expand back to isnan. So use the gnulib
1209 replacements for them directly. */
1210 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1211 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1213 _GL_EXTERN_C int rpl_isnanf (float x);
1214 # define gl_isnan_f(x) rpl_isnanf (x)
1216 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1217 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1219 _GL_EXTERN_C int rpl_isnand (double x);
1220 # define gl_isnan_d(x) rpl_isnand (x)
1222 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1223 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1225 _GL_EXTERN_C int rpl_isnanl (long double x);
1226 # define gl_isnan_l(x) rpl_isnanl (x)
1230 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1231 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1233 # elif __GNUC__ >= 4
1236 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1237 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1238 __builtin_isnanf ((float)(x)))
1242 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1244 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1247 /* Ensure isnan is a macro. */
1249 # define isnan isnan
1252 #elif defined GNULIB_POSIXCHECK
1254 _GL_WARN_REAL_FLOATING_DECL (isnan);
1256 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1261 #if @GNULIB_SIGNBIT@
1262 # if @REPLACE_SIGNBIT_USING_GCC@
1264 /* GCC 4.0 and newer provides three built-ins for signbit. */
1265 # define signbit(x) \
1266 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1267 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1268 __builtin_signbitf (x))
1270 # if @REPLACE_SIGNBIT@
1272 _GL_EXTERN_C int gl_signbitf (float arg);
1273 _GL_EXTERN_C int gl_signbitd (double arg);
1274 _GL_EXTERN_C int gl_signbitl (long double arg);
1275 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1276 # define _GL_NUM_UINT_WORDS(type) \
1277 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1278 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1279 # define gl_signbitf_OPTIMIZED_MACRO
1280 # define gl_signbitf(arg) \
1281 ({ union { float _value; \
1282 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1284 _m._value = (arg); \
1285 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1288 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1289 # define gl_signbitd_OPTIMIZED_MACRO
1290 # define gl_signbitd(arg) \
1291 ({ union { double _value; \
1292 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1294 _m._value = (arg); \
1295 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1298 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1299 # define gl_signbitl_OPTIMIZED_MACRO
1300 # define gl_signbitl(arg) \
1301 ({ union { long double _value; \
1302 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1304 _m._value = (arg); \
1305 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1309 # define signbit(x) \
1310 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1311 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1316 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1318 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1321 #elif defined GNULIB_POSIXCHECK
1322 # if defined signbit
1323 _GL_WARN_REAL_FLOATING_DECL (signbit);
1325 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1330 #endif /* _@GUARD_PREFIX@_MATH_H */
1331 #endif /* _@GUARD_PREFIX@_MATH_H */