16056388c3fec6fa916b0be5197a111afe17c00b
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 Lesser 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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser 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");
513 _GL_FUNCDECL_SYS (fmodf
, float, (float x
, float y
));
515 _GL_CXXALIAS_SYS (fmodf
, float, (float x
, float y
));
516 _GL_CXXALIASWARN (fmodf
);
517 #elif defined GNULIB_POSIXCHECK
519 # if HAVE_RAW_DECL_FMODF
520 _GL_WARN_ON_USE (fmodf
, "fmodf is unportable - "
521 "use gnulib module fmodf for portability");
529 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
530 If x is zero: mantissa = x, exp = 0.
531 If x is infinite or NaN: mantissa = x, exp unspecified.
532 Store exp in *EXPPTR and return mantissa. */
534 # if @REPLACE_FREXPF@
535 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
537 # define frexpf rpl_frexpf
539 _GL_FUNCDECL_RPL (frexpf
, float, (float x
, int *expptr
) _GL_ARG_NONNULL ((2)));
540 _GL_CXXALIAS_RPL (frexpf
, float, (float x
, int *expptr
));
544 _GL_FUNCDECL_SYS (frexpf
, float, (float x
, int *expptr
) _GL_ARG_NONNULL ((2)));
546 _GL_CXXALIAS_SYS (frexpf
, float, (float x
, int *expptr
));
548 _GL_CXXALIASWARN (frexpf
);
549 #elif defined GNULIB_POSIXCHECK
551 # if HAVE_RAW_DECL_FREXPF
552 _GL_WARN_ON_USE (frexpf
, "frexpf is unportable - "
553 "use gnulib module frexpf for portability");
560 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
561 If x is zero: mantissa = x, exp = 0.
562 If x is infinite or NaN: mantissa = x, exp unspecified.
563 Store exp in *EXPPTR and return mantissa. */
566 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
567 # define frexp rpl_frexp
569 _GL_FUNCDECL_RPL (frexp
, double, (double x
, int *expptr
) _GL_ARG_NONNULL ((2)));
570 _GL_CXXALIAS_RPL (frexp
, double, (double x
, int *expptr
));
572 _GL_CXXALIAS_SYS (frexp
, double, (double x
, int *expptr
));
574 _GL_CXXALIASWARN (frexp
);
575 #elif defined GNULIB_POSIXCHECK
577 /* Assume frexp is always declared. */
578 _GL_WARN_ON_USE (frexp
, "frexp is unportable - "
579 "use gnulib module frexp for portability");
585 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
586 If x is zero: mantissa = x, exp = 0.
587 If x is infinite or NaN: mantissa = x, exp unspecified.
588 Store exp in *EXPPTR and return mantissa. */
589 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
590 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
592 # define frexpl rpl_frexpl
594 _GL_FUNCDECL_RPL (frexpl
, long double,
595 (long double x
, int *expptr
) _GL_ARG_NONNULL ((2)));
596 _GL_CXXALIAS_RPL (frexpl
, long double, (long double x
, int *expptr
));
598 # if !@HAVE_DECL_FREXPL@
599 _GL_FUNCDECL_SYS (frexpl
, long double,
600 (long double x
, int *expptr
) _GL_ARG_NONNULL ((2)));
603 _GL_CXXALIAS_SYS (frexpl
, long double, (long double x
, int *expptr
));
606 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
607 _GL_CXXALIASWARN (frexpl
);
609 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
611 # if HAVE_RAW_DECL_FREXPL
612 _GL_WARN_ON_USE (frexpl
, "frexpl is unportable - "
613 "use gnulib module frexpl for portability");
618 /* Return x * 2^exp. */
622 _GL_FUNCDECL_SYS (ldexpf
, float, (float x
, int exp
));
624 _GL_CXXALIAS_SYS (ldexpf
, float, (float x
, int exp
));
625 _GL_CXXALIASWARN (ldexpf
);
626 #elif defined GNULIB_POSIXCHECK
628 # if HAVE_RAW_DECL_LDEXPF
629 _GL_WARN_ON_USE (ldexpf
, "ldexpf is unportable - "
630 "use gnulib module ldexpf for portability");
634 /* Return x * 2^exp. */
635 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
636 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
638 # define ldexpl rpl_ldexpl
640 _GL_FUNCDECL_RPL (ldexpl
, long double, (long double x
, int exp
));
641 _GL_CXXALIAS_RPL (ldexpl
, long double, (long double x
, int exp
));
643 # if !@HAVE_DECL_LDEXPL@
644 _GL_FUNCDECL_SYS (ldexpl
, long double, (long double x
, int exp
));
647 _GL_CXXALIAS_SYS (ldexpl
, long double, (long double x
, int exp
));
651 _GL_CXXALIASWARN (ldexpl
);
653 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
655 # if HAVE_RAW_DECL_LDEXPL
656 _GL_WARN_ON_USE (ldexpl
, "ldexpl is unportable - "
657 "use gnulib module ldexpl for portability");
663 # if !@HAVE_DECL_LOGB@
664 _GL_EXTERN_C
double logb (double x
);
666 #elif defined GNULIB_POSIXCHECK
668 # if HAVE_RAW_DECL_LOGB
669 _GL_WARN_ON_USE (logb
, "logb is unportable - "
670 "use gnulib module logb for portability");
678 _GL_FUNCDECL_SYS (logf
, float, (float x
));
680 _GL_CXXALIAS_SYS (logf
, float, (float x
));
681 _GL_CXXALIASWARN (logf
);
682 #elif defined GNULIB_POSIXCHECK
684 # if HAVE_RAW_DECL_LOGF
685 _GL_WARN_ON_USE (logf
, "logf is unportable - "
686 "use gnulib module logf for portability");
691 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
692 _GL_FUNCDECL_SYS (logl
, long double, (long double x
));
694 _GL_CXXALIAS_SYS (logl
, long double, (long double x
));
695 _GL_CXXALIASWARN (logl
);
696 #elif defined GNULIB_POSIXCHECK
698 # if HAVE_RAW_DECL_LOGL
699 _GL_WARN_ON_USE (logl
, "logl is unportable - "
700 "use gnulib module mathl for portability");
708 _GL_FUNCDECL_SYS (log10f
, float, (float x
));
710 _GL_CXXALIAS_SYS (log10f
, float, (float x
));
711 _GL_CXXALIASWARN (log10f
);
712 #elif defined GNULIB_POSIXCHECK
714 # if HAVE_RAW_DECL_LOG10F
715 _GL_WARN_ON_USE (log10f
, "log10f is unportable - "
716 "use gnulib module log10f for portability");
724 _GL_FUNCDECL_SYS (modff
, float, (float x
, float *iptr
) _GL_ARG_NONNULL ((2)));
726 _GL_CXXALIAS_SYS (modff
, float, (float x
, float *iptr
));
727 _GL_CXXALIASWARN (modff
);
728 #elif defined GNULIB_POSIXCHECK
730 # if HAVE_RAW_DECL_MODFF
731 _GL_WARN_ON_USE (modff
, "modff is unportable - "
732 "use gnulib module modff for portability");
740 _GL_FUNCDECL_SYS (powf
, float, (float x
, float y
));
742 _GL_CXXALIAS_SYS (powf
, float, (float x
, float y
));
743 _GL_CXXALIASWARN (powf
);
744 #elif defined GNULIB_POSIXCHECK
746 # if HAVE_RAW_DECL_POWF
747 _GL_WARN_ON_USE (powf
, "powf is unportable - "
748 "use gnulib module powf for portability");
755 _GL_FUNCDECL_SYS (rintf
, float, (float x
));
757 _GL_CXXALIAS_SYS (rintf
, float, (float x
));
758 _GL_CXXALIASWARN (rintf
);
759 #elif defined GNULIB_POSIXCHECK
761 # if HAVE_RAW_DECL_RINTF
762 _GL_WARN_ON_USE (rintf
, "rintf is unportable - "
763 "use gnulib module rintf for portability");
769 _GL_FUNCDECL_SYS (rint
, double, (double x
));
771 _GL_CXXALIAS_SYS (rint
, double, (double x
));
772 _GL_CXXALIASWARN (rint
);
773 #elif defined GNULIB_POSIXCHECK
775 # if HAVE_RAW_DECL_RINT
776 _GL_WARN_ON_USE (rint
, "rint is unportable - "
777 "use gnulib module rint for portability");
783 _GL_FUNCDECL_SYS (rintl
, long double, (long double x
));
785 _GL_CXXALIAS_SYS (rintl
, long double, (long double x
));
786 _GL_CXXALIASWARN (rintl
);
787 #elif defined GNULIB_POSIXCHECK
789 # if HAVE_RAW_DECL_RINTL
790 _GL_WARN_ON_USE (rintl
, "rintl is unportable - "
791 "use gnulib module rintl for portability");
797 # if @REPLACE_ROUNDF@
798 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
800 # define roundf rpl_roundf
802 _GL_FUNCDECL_RPL (roundf
, float, (float x
));
803 _GL_CXXALIAS_RPL (roundf
, float, (float x
));
805 # if !@HAVE_DECL_ROUNDF@
806 _GL_FUNCDECL_SYS (roundf
, float, (float x
));
808 _GL_CXXALIAS_SYS (roundf
, float, (float x
));
810 _GL_CXXALIASWARN (roundf
);
811 #elif defined GNULIB_POSIXCHECK
813 # if HAVE_RAW_DECL_ROUNDF
814 _GL_WARN_ON_USE (roundf
, "roundf is unportable - "
815 "use gnulib module roundf for portability");
821 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
823 # define round rpl_round
825 _GL_FUNCDECL_RPL (round
, double, (double x
));
826 _GL_CXXALIAS_RPL (round
, double, (double x
));
828 # if !@HAVE_DECL_ROUND@
829 _GL_FUNCDECL_SYS (round
, double, (double x
));
831 _GL_CXXALIAS_SYS (round
, double, (double x
));
833 _GL_CXXALIASWARN (round
);
834 #elif defined GNULIB_POSIXCHECK
836 # if HAVE_RAW_DECL_ROUND
837 _GL_WARN_ON_USE (round
, "round is unportable - "
838 "use gnulib module round for portability");
843 # if @REPLACE_ROUNDL@
844 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
846 # define roundl rpl_roundl
848 _GL_FUNCDECL_RPL (roundl
, long double, (long double x
));
849 _GL_CXXALIAS_RPL (roundl
, long double, (long double x
));
851 # if !@HAVE_DECL_ROUNDL@
852 _GL_FUNCDECL_SYS (roundl
, long double, (long double x
));
854 _GL_CXXALIAS_SYS (roundl
, long double, (long double x
));
856 _GL_CXXALIASWARN (roundl
);
857 #elif defined GNULIB_POSIXCHECK
859 # if HAVE_RAW_DECL_ROUNDL
860 _GL_WARN_ON_USE (roundl
, "roundl is unportable - "
861 "use gnulib module roundl for portability");
869 _GL_FUNCDECL_SYS (sinf
, float, (float x
));
871 _GL_CXXALIAS_SYS (sinf
, float, (float x
));
872 _GL_CXXALIASWARN (sinf
);
873 #elif defined GNULIB_POSIXCHECK
875 # if HAVE_RAW_DECL_SINF
876 _GL_WARN_ON_USE (sinf
, "sinf is unportable - "
877 "use gnulib module sinf for portability");
882 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
883 _GL_FUNCDECL_SYS (sinl
, long double, (long double x
));
885 _GL_CXXALIAS_SYS (sinl
, long double, (long double x
));
886 _GL_CXXALIASWARN (sinl
);
887 #elif defined GNULIB_POSIXCHECK
889 # if HAVE_RAW_DECL_SINL
890 _GL_WARN_ON_USE (sinl
, "sinl is unportable - "
891 "use gnulib module mathl for portability");
899 _GL_FUNCDECL_SYS (sinhf
, float, (float x
));
901 _GL_CXXALIAS_SYS (sinhf
, float, (float x
));
902 _GL_CXXALIASWARN (sinhf
);
903 #elif defined GNULIB_POSIXCHECK
905 # if HAVE_RAW_DECL_SINHF
906 _GL_WARN_ON_USE (sinhf
, "sinhf is unportable - "
907 "use gnulib module sinhf for portability");
915 _GL_FUNCDECL_SYS (sqrtf
, float, (float x
));
917 _GL_CXXALIAS_SYS (sqrtf
, float, (float x
));
918 _GL_CXXALIASWARN (sqrtf
);
919 #elif defined GNULIB_POSIXCHECK
921 # if HAVE_RAW_DECL_SQRTF
922 _GL_WARN_ON_USE (sqrtf
, "sqrtf is unportable - "
923 "use gnulib module sqrtf for portability");
928 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
929 _GL_FUNCDECL_SYS (sqrtl
, long double, (long double x
));
931 _GL_CXXALIAS_SYS (sqrtl
, long double, (long double x
));
932 _GL_CXXALIASWARN (sqrtl
);
933 #elif defined GNULIB_POSIXCHECK
935 # if HAVE_RAW_DECL_SQRTL
936 _GL_WARN_ON_USE (sqrtl
, "sqrtl is unportable - "
937 "use gnulib module mathl for portability");
945 _GL_FUNCDECL_SYS (tanf
, float, (float x
));
947 _GL_CXXALIAS_SYS (tanf
, float, (float x
));
948 _GL_CXXALIASWARN (tanf
);
949 #elif defined GNULIB_POSIXCHECK
951 # if HAVE_RAW_DECL_TANF
952 _GL_WARN_ON_USE (tanf
, "tanf is unportable - "
953 "use gnulib module tanf for portability");
958 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
959 _GL_FUNCDECL_SYS (tanl
, long double, (long double x
));
961 _GL_CXXALIAS_SYS (tanl
, long double, (long double x
));
962 _GL_CXXALIASWARN (tanl
);
963 #elif defined GNULIB_POSIXCHECK
965 # if HAVE_RAW_DECL_TANL
966 _GL_WARN_ON_USE (tanl
, "tanl is unportable - "
967 "use gnulib module mathl for portability");
975 _GL_FUNCDECL_SYS (tanhf
, float, (float x
));
977 _GL_CXXALIAS_SYS (tanhf
, float, (float x
));
978 _GL_CXXALIASWARN (tanhf
);
979 #elif defined GNULIB_POSIXCHECK
981 # if HAVE_RAW_DECL_TANHF
982 _GL_WARN_ON_USE (tanhf
, "tanhf is unportable - "
983 "use gnulib module tanhf for portability");
989 # if @REPLACE_TRUNCF@
990 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
991 # define truncf rpl_truncf
993 _GL_FUNCDECL_RPL (truncf
, float, (float x
));
994 _GL_CXXALIAS_RPL (truncf
, float, (float x
));
996 # if !@HAVE_DECL_TRUNCF@
997 _GL_FUNCDECL_SYS (truncf
, float, (float x
));
999 _GL_CXXALIAS_SYS (truncf
, float, (float x
));
1001 _GL_CXXALIASWARN (truncf
);
1002 #elif defined GNULIB_POSIXCHECK
1004 # if HAVE_RAW_DECL_TRUNCF
1005 _GL_WARN_ON_USE (truncf
, "truncf is unportable - "
1006 "use gnulib module truncf for portability");
1011 # if @REPLACE_TRUNC@
1012 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1013 # define trunc rpl_trunc
1015 _GL_FUNCDECL_RPL (trunc
, double, (double x
));
1016 _GL_CXXALIAS_RPL (trunc
, double, (double x
));
1018 # if !@HAVE_DECL_TRUNC@
1019 _GL_FUNCDECL_SYS (trunc
, double, (double x
));
1021 _GL_CXXALIAS_SYS (trunc
, double, (double x
));
1023 _GL_CXXALIASWARN (trunc
);
1024 #elif defined GNULIB_POSIXCHECK
1026 # if HAVE_RAW_DECL_TRUNC
1027 _GL_WARN_ON_USE (trunc
, "trunc is unportable - "
1028 "use gnulib module trunc for portability");
1033 # if @REPLACE_TRUNCL@
1034 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1036 # define truncl rpl_truncl
1038 _GL_FUNCDECL_RPL (truncl
, long double, (long double x
));
1039 _GL_CXXALIAS_RPL (truncl
, long double, (long double x
));
1041 # if !@HAVE_DECL_TRUNCL@
1042 _GL_FUNCDECL_SYS (truncl
, long double, (long double x
));
1044 _GL_CXXALIAS_SYS (truncl
, long double, (long double x
));
1046 _GL_CXXALIASWARN (truncl
);
1047 #elif defined GNULIB_POSIXCHECK
1049 # if HAVE_RAW_DECL_TRUNCL
1050 _GL_WARN_ON_USE (truncl
, "truncl is unportable - "
1051 "use gnulib module truncl for portability");
1056 /* Definitions of function-like macros come here, after the function
1060 #if @GNULIB_ISFINITE@
1061 # if @REPLACE_ISFINITE@
1062 _GL_EXTERN_C
int gl_isfinitef (float x
);
1063 _GL_EXTERN_C
int gl_isfinited (double x
);
1064 _GL_EXTERN_C
int gl_isfinitel (long double x
);
1066 # define isfinite(x) \
1067 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1068 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1073 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite
)
1075 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite
)
1078 #elif defined GNULIB_POSIXCHECK
1079 # if defined isfinite
1080 _GL_WARN_REAL_FLOATING_DECL (isfinite
);
1082 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1088 # if @REPLACE_ISINF@
1089 _GL_EXTERN_C
int gl_isinff (float x
);
1090 _GL_EXTERN_C
int gl_isinfd (double x
);
1091 _GL_EXTERN_C
int gl_isinfl (long double x
);
1094 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1095 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1100 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf
)
1102 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf
)
1105 #elif defined GNULIB_POSIXCHECK
1107 _GL_WARN_REAL_FLOATING_DECL (isinf
);
1109 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1115 /* Test for NaN for 'float' numbers. */
1117 /* The original <math.h> included above provides a declaration of isnan macro
1118 or (older) isnanf function. */
1120 /* GCC 4.0 and newer provides three built-ins for isnan. */
1122 # define isnanf(x) __builtin_isnanf ((float)(x))
1123 # elif defined isnan
1125 # define isnanf(x) isnan ((float)(x))
1128 /* Test whether X is a NaN. */
1130 # define isnanf rpl_isnanf
1131 _GL_EXTERN_C
int isnanf (float x
);
1136 /* Test for NaN for 'double' numbers.
1137 This function is a gnulib extension, unlike isnan() which applied only
1138 to 'double' numbers earlier but now is a type-generic macro. */
1140 /* The original <math.h> included above provides a declaration of isnan
1143 /* GCC 4.0 and newer provides three built-ins for isnan. */
1145 # define isnand(x) __builtin_isnan ((double)(x))
1148 # define isnand(x) isnan ((double)(x))
1151 /* Test whether X is a NaN. */
1153 # define isnand rpl_isnand
1154 _GL_EXTERN_C
int isnand (double x
);
1159 /* Test for NaN for 'long double' numbers. */
1161 /* The original <math.h> included above provides a declaration of isnan
1162 macro or (older) isnanl function. */
1164 /* GCC 4.0 and newer provides three built-ins for isnan. */
1166 # define isnanl(x) __builtin_isnanl ((long double)(x))
1167 # elif defined isnan
1169 # define isnanl(x) isnan ((long double)(x))
1172 /* Test whether X is a NaN. */
1174 # define isnanl rpl_isnanl
1175 _GL_EXTERN_C
int isnanl (long double x
);
1179 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1181 # if @REPLACE_ISNAN@
1182 /* We can't just use the isnanf macro (e.g.) as exposed by
1183 isnanf.h (e.g.) here, because those may end up being macros
1184 that recursively expand back to isnan. So use the gnulib
1185 replacements for them directly. */
1186 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1187 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1189 _GL_EXTERN_C
int rpl_isnanf (float x
);
1190 # define gl_isnan_f(x) rpl_isnanf (x)
1192 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1193 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1195 _GL_EXTERN_C
int rpl_isnand (double x
);
1196 # define gl_isnan_d(x) rpl_isnand (x)
1198 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1199 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1201 _GL_EXTERN_C
int rpl_isnanl (long double x
);
1202 # define gl_isnan_l(x) rpl_isnanl (x)
1206 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1207 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1209 # elif __GNUC__ >= 4
1212 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1213 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1214 __builtin_isnanf ((float)(x)))
1218 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan
)
1220 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan
)
1223 /* Ensure isnan is a macro. */
1225 # define isnan isnan
1228 #elif defined GNULIB_POSIXCHECK
1230 _GL_WARN_REAL_FLOATING_DECL (isnan
);
1232 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1237 #if @GNULIB_SIGNBIT@
1238 # if @REPLACE_SIGNBIT_USING_GCC@
1240 /* GCC 4.0 and newer provides three built-ins for signbit. */
1241 # define signbit(x) \
1242 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1243 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1244 __builtin_signbitf (x))
1246 # if @REPLACE_SIGNBIT@
1248 _GL_EXTERN_C
int gl_signbitf (float arg
);
1249 _GL_EXTERN_C
int gl_signbitd (double arg
);
1250 _GL_EXTERN_C
int gl_signbitl (long double arg
);
1251 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1252 # define _GL_NUM_UINT_WORDS(type) \
1253 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1254 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1255 # define gl_signbitf_OPTIMIZED_MACRO
1256 # define gl_signbitf(arg) \
1257 ({ union { float _value; \
1258 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1260 _m._value = (arg); \
1261 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1264 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1265 # define gl_signbitd_OPTIMIZED_MACRO
1266 # define gl_signbitd(arg) \
1267 ({ union { double _value; \
1268 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1270 _m._value = (arg); \
1271 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1274 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1275 # define gl_signbitl_OPTIMIZED_MACRO
1276 # define gl_signbitl(arg) \
1277 ({ union { long double _value; \
1278 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1280 _m._value = (arg); \
1281 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1285 # define signbit(x) \
1286 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1287 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1292 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit
)
1294 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit
)
1297 #elif defined GNULIB_POSIXCHECK
1298 # if defined signbit
1299 _GL_WARN_REAL_FLOATING_DECL (signbit
);
1301 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1306 #endif /* _@GUARD_PREFIX@_MATH_H */
1307 #endif /* _@GUARD_PREFIX@_MATH_H */