1 /* A GNU-like <math.h>.
3 Copyright (C) 2002-2003, 2007-2012 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #ifndef _@GUARD_PREFIX@_MATH_H
21 @PRAGMA_SYSTEM_HEADER@
25 /* The include_next requires a split double-inclusion guard. */
26 #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_MATH_H@
28 #ifndef _@GUARD_PREFIX@_MATH_H
29 #define _@GUARD_PREFIX@_MATH_H
32 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
34 /* The definition of _GL_ARG_NONNULL is copied here. */
36 /* The definition of _GL_WARN_ON_USE is copied here. */
39 /* Helper macros to define type-generic function FUNC as overloaded functions,
40 rather than as macros like in C. POSIX declares these with an argument of
41 real-floating (that is, one of float, double, or long double). */
42 # define _GL_MATH_CXX_REAL_FLOATING_DECL_1(func) \
44 _gl_cxx_ ## func ## f (float f) \
49 _gl_cxx_ ## func ## d (double d) \
54 _gl_cxx_ ## func ## l (long double l) \
58 # define _GL_MATH_CXX_REAL_FLOATING_DECL_2(func) \
62 return _gl_cxx_ ## func ## f (f); \
67 return _gl_cxx_ ## func ## d (d); \
70 func (long double l) \
72 return _gl_cxx_ ## func ## l (l); \
76 /* Helper macros to define a portability warning for the
77 classification macro FUNC called with VALUE. POSIX declares the
78 classification macros with an argument of real-floating (that is,
79 one of float, double, or long double). */
80 #define _GL_WARN_REAL_FLOATING_DECL(func) \
82 rpl_ ## func ## f (float f) \
87 rpl_ ## func ## d (double d) \
92 rpl_ ## func ## l (long double l) \
96 _GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \
97 "use gnulib module " #func " for portability"); \
98 _GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \
99 "use gnulib module " #func " for portability"); \
100 _GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \
101 "use gnulib module " #func " for portability")
102 #define _GL_WARN_REAL_FLOATING_IMPL(func, value) \
103 (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \
104 : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \
105 : rpl_ ## func ## l (value))
109 /* Pull in a function that fixes the 'int' to 'long double' conversion
111 _GL_EXTERN_C void _Qp_itoq (long double *, int);
112 static void (*_gl_math_fix_itold) (long double *, int) = _Qp_itoq;
116 /* POSIX allows platforms that don't support NAN. But all major
117 machines in the past 15 years have supported something close to
118 IEEE NaN, so we define this unconditionally. We also must define
119 it on platforms like Solaris 10, where NAN is present but defined
120 as a function pointer rather than a floating point constant. */
121 #if !defined NAN || @REPLACE_NAN@
122 # if !GNULIB_defined_NAN
124 /* The Compaq (ex-DEC) C 6.4 compiler and the Microsoft MSVC 9 compiler
125 choke on the expression 0.0 / 0.0. */
126 # if defined __DECC || defined _MSC_VER
130 static float zero = 0.0f;
133 # define NAN (_NaN())
135 # define NAN (0.0f / 0.0f)
137 # define GNULIB_defined_NAN 1
141 /* Solaris 10 defines HUGE_VAL, but as a function pointer rather
142 than a floating point constant. */
143 #if @REPLACE_HUGE_VAL@
145 # define HUGE_VAL (1.0 / 0.0)
152 _GL_FUNCDECL_SYS (acosf, float, (float x));
154 _GL_CXXALIAS_SYS (acosf, float, (float x));
155 _GL_CXXALIASWARN (acosf);
156 #elif defined GNULIB_POSIXCHECK
158 # if HAVE_RAW_DECL_ACOSF
159 _GL_WARN_ON_USE (acosf, "acosf is unportable - "
160 "use gnulib module acosf for portability");
165 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
166 _GL_FUNCDECL_SYS (acosl, long double, (long double x));
168 _GL_CXXALIAS_SYS (acosl, long double, (long double x));
169 _GL_CXXALIASWARN (acosl);
170 #elif defined GNULIB_POSIXCHECK
172 # if HAVE_RAW_DECL_ACOSL
173 _GL_WARN_ON_USE (acosl, "acosl is unportable - "
174 "use gnulib module mathl for portability");
182 _GL_FUNCDECL_SYS (asinf, float, (float x));
184 _GL_CXXALIAS_SYS (asinf, float, (float x));
185 _GL_CXXALIASWARN (asinf);
186 #elif defined GNULIB_POSIXCHECK
188 # if HAVE_RAW_DECL_ASINF
189 _GL_WARN_ON_USE (asinf, "asinf is unportable - "
190 "use gnulib module asinf for portability");
195 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
196 _GL_FUNCDECL_SYS (asinl, long double, (long double x));
198 _GL_CXXALIAS_SYS (asinl, long double, (long double x));
199 _GL_CXXALIASWARN (asinl);
200 #elif defined GNULIB_POSIXCHECK
202 # if HAVE_RAW_DECL_ASINL
203 _GL_WARN_ON_USE (asinl, "asinl is unportable - "
204 "use gnulib module mathl for portability");
212 _GL_FUNCDECL_SYS (atanf, float, (float x));
214 _GL_CXXALIAS_SYS (atanf, float, (float x));
215 _GL_CXXALIASWARN (atanf);
216 #elif defined GNULIB_POSIXCHECK
218 # if HAVE_RAW_DECL_ATANF
219 _GL_WARN_ON_USE (atanf, "atanf is unportable - "
220 "use gnulib module atanf for portability");
225 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
226 _GL_FUNCDECL_SYS (atanl, long double, (long double x));
228 _GL_CXXALIAS_SYS (atanl, long double, (long double x));
229 _GL_CXXALIASWARN (atanl);
230 #elif defined GNULIB_POSIXCHECK
232 # if HAVE_RAW_DECL_ATANL
233 _GL_WARN_ON_USE (atanl, "atanl is unportable - "
234 "use gnulib module mathl for portability");
242 _GL_FUNCDECL_SYS (atan2f, float, (float y, float x));
244 _GL_CXXALIAS_SYS (atan2f, float, (float y, float x));
245 _GL_CXXALIASWARN (atan2f);
246 #elif defined GNULIB_POSIXCHECK
248 # if HAVE_RAW_DECL_ATAN2F
249 _GL_WARN_ON_USE (atan2f, "atan2f is unportable - "
250 "use gnulib module atan2f for portability");
257 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
259 # define ceilf rpl_ceilf
261 _GL_FUNCDECL_RPL (ceilf, float, (float x));
262 _GL_CXXALIAS_RPL (ceilf, float, (float x));
264 # if !@HAVE_DECL_CEILF@
266 _GL_FUNCDECL_SYS (ceilf, float, (float x));
268 _GL_CXXALIAS_SYS (ceilf, float, (float x));
270 _GL_CXXALIASWARN (ceilf);
271 #elif defined GNULIB_POSIXCHECK
273 # if HAVE_RAW_DECL_CEILF
274 _GL_WARN_ON_USE (ceilf, "ceilf is unportable - "
275 "use gnulib module ceilf for portability");
281 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
282 # define ceil rpl_ceil
284 _GL_FUNCDECL_RPL (ceil, double, (double x));
285 _GL_CXXALIAS_RPL (ceil, double, (double x));
287 _GL_CXXALIAS_SYS (ceil, double, (double x));
289 _GL_CXXALIASWARN (ceil);
294 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
296 # define ceill rpl_ceill
298 _GL_FUNCDECL_RPL (ceill, long double, (long double x));
299 _GL_CXXALIAS_RPL (ceill, long double, (long double x));
301 # if !@HAVE_DECL_CEILL@
302 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
304 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
306 _GL_CXXALIASWARN (ceill);
307 #elif defined GNULIB_POSIXCHECK
309 # if HAVE_RAW_DECL_CEILL
310 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
311 "use gnulib module ceill for portability");
316 #if @GNULIB_COPYSIGNF@
317 # if !@HAVE_COPYSIGNF@
318 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
320 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
321 _GL_CXXALIASWARN (copysignf);
322 #elif defined GNULIB_POSIXCHECK
324 # if HAVE_RAW_DECL_COPYSIGNF
325 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
326 "use gnulib module copysignf for portability");
330 #if @GNULIB_COPYSIGN@
331 # if !@HAVE_COPYSIGN@
332 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
334 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
335 _GL_CXXALIASWARN (copysign);
336 #elif defined GNULIB_POSIXCHECK
338 # if HAVE_RAW_DECL_COPYSIGN
339 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
340 "use gnulib module copysign for portability");
344 #if @GNULIB_COPYSIGNL@
345 # if !@HAVE_COPYSIGNL@
346 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
348 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
349 _GL_CXXALIASWARN (copysignl);
350 #elif defined GNULIB_POSIXCHECK
352 # if HAVE_RAW_DECL_COPYSIGNL
353 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
354 "use gnulib module copysignl for portability");
362 _GL_FUNCDECL_SYS (cosf, float, (float x));
364 _GL_CXXALIAS_SYS (cosf, float, (float x));
365 _GL_CXXALIASWARN (cosf);
366 #elif defined GNULIB_POSIXCHECK
368 # if HAVE_RAW_DECL_COSF
369 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
370 "use gnulib module cosf for portability");
375 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
376 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
378 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
379 _GL_CXXALIASWARN (cosl);
380 #elif defined GNULIB_POSIXCHECK
382 # if HAVE_RAW_DECL_COSL
383 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
384 "use gnulib module mathl for portability");
392 _GL_FUNCDECL_SYS (coshf, float, (float x));
394 _GL_CXXALIAS_SYS (coshf, float, (float x));
395 _GL_CXXALIASWARN (coshf);
396 #elif defined GNULIB_POSIXCHECK
398 # if HAVE_RAW_DECL_COSHF
399 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
400 "use gnulib module coshf for portability");
408 _GL_FUNCDECL_SYS (expf, float, (float x));
410 _GL_CXXALIAS_SYS (expf, float, (float x));
411 _GL_CXXALIASWARN (expf);
412 #elif defined GNULIB_POSIXCHECK
414 # if HAVE_RAW_DECL_EXPF
415 _GL_WARN_ON_USE (expf, "expf is unportable - "
416 "use gnulib module expf for portability");
421 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
422 _GL_FUNCDECL_SYS (expl, long double, (long double x));
424 _GL_CXXALIAS_SYS (expl, long double, (long double x));
425 _GL_CXXALIASWARN (expl);
426 #elif defined GNULIB_POSIXCHECK
428 # if HAVE_RAW_DECL_EXPL
429 _GL_WARN_ON_USE (expl, "expl is unportable - "
430 "use gnulib module mathl for portability");
438 _GL_FUNCDECL_SYS (fabsf, float, (float x));
440 _GL_CXXALIAS_SYS (fabsf, float, (float x));
441 _GL_CXXALIASWARN (fabsf);
442 #elif defined GNULIB_POSIXCHECK
444 # if HAVE_RAW_DECL_FABSF
445 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
446 "use gnulib module fabsf for portability");
452 # if @REPLACE_FLOORF@
453 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
455 # define floorf rpl_floorf
457 _GL_FUNCDECL_RPL (floorf, float, (float x));
458 _GL_CXXALIAS_RPL (floorf, float, (float x));
460 # if !@HAVE_DECL_FLOORF@
462 _GL_FUNCDECL_SYS (floorf, float, (float x));
464 _GL_CXXALIAS_SYS (floorf, float, (float x));
466 _GL_CXXALIASWARN (floorf);
467 #elif defined GNULIB_POSIXCHECK
469 # if HAVE_RAW_DECL_FLOORF
470 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
471 "use gnulib module floorf for portability");
477 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
478 # define floor rpl_floor
480 _GL_FUNCDECL_RPL (floor, double, (double x));
481 _GL_CXXALIAS_RPL (floor, double, (double x));
483 _GL_CXXALIAS_SYS (floor, double, (double x));
485 _GL_CXXALIASWARN (floor);
489 # if @REPLACE_FLOORL@
490 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
492 # define floorl rpl_floorl
494 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
495 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
497 # if !@HAVE_DECL_FLOORL@
498 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
500 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
502 _GL_CXXALIASWARN (floorl);
503 #elif defined GNULIB_POSIXCHECK
505 # if HAVE_RAW_DECL_FLOORL
506 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
507 "use gnulib module floorl for portability");
514 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
516 # define fmaf rpl_fmaf
518 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
519 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
522 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
524 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
526 _GL_CXXALIASWARN (fmaf);
527 #elif defined GNULIB_POSIXCHECK
529 # if HAVE_RAW_DECL_FMAF
530 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
531 "use gnulib module fmaf for portability");
537 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
541 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
542 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
545 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
547 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
549 _GL_CXXALIASWARN (fma);
550 #elif defined GNULIB_POSIXCHECK
552 # if HAVE_RAW_DECL_FMA
553 _GL_WARN_ON_USE (fma, "fma is unportable - "
554 "use gnulib module fma for portability");
560 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
562 # define fmal rpl_fmal
564 _GL_FUNCDECL_RPL (fmal, long double,
565 (long double x, long double y, long double z));
566 _GL_CXXALIAS_RPL (fmal, long double,
567 (long double x, long double y, long double z));
570 _GL_FUNCDECL_SYS (fmal, long double,
571 (long double x, long double y, long double z));
573 _GL_CXXALIAS_SYS (fmal, long double,
574 (long double x, long double y, long double z));
576 _GL_CXXALIASWARN (fmal);
577 #elif defined GNULIB_POSIXCHECK
579 # if HAVE_RAW_DECL_FMAL
580 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
581 "use gnulib module fmal for portability");
589 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
591 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
592 _GL_CXXALIASWARN (fmodf);
593 #elif defined GNULIB_POSIXCHECK
595 # if HAVE_RAW_DECL_FMODF
596 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
597 "use gnulib module fmodf for portability");
605 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
606 If x is zero: mantissa = x, exp = 0.
607 If x is infinite or NaN: mantissa = x, exp unspecified.
608 Store exp in *EXPPTR and return mantissa. */
610 # if @REPLACE_FREXPF@
611 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
613 # define frexpf rpl_frexpf
615 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
616 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
620 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
622 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
624 _GL_CXXALIASWARN (frexpf);
625 #elif defined GNULIB_POSIXCHECK
627 # if HAVE_RAW_DECL_FREXPF
628 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
629 "use gnulib module frexpf for portability");
636 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
637 If x is zero: mantissa = x, exp = 0.
638 If x is infinite or NaN: mantissa = x, exp unspecified.
639 Store exp in *EXPPTR and return mantissa. */
642 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
643 # define frexp rpl_frexp
645 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
646 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
648 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
650 _GL_CXXALIASWARN (frexp);
651 #elif defined GNULIB_POSIXCHECK
653 /* Assume frexp is always declared. */
654 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
655 "use gnulib module frexp for portability");
661 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
662 If x is zero: mantissa = x, exp = 0.
663 If x is infinite or NaN: mantissa = x, exp unspecified.
664 Store exp in *EXPPTR and return mantissa. */
665 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
666 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
668 # define frexpl rpl_frexpl
670 _GL_FUNCDECL_RPL (frexpl, long double,
671 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
672 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
674 # if !@HAVE_DECL_FREXPL@
675 _GL_FUNCDECL_SYS (frexpl, long double,
676 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
679 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
682 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
683 _GL_CXXALIASWARN (frexpl);
685 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
687 # if HAVE_RAW_DECL_FREXPL
688 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
689 "use gnulib module frexpl for portability");
694 /* Return x * 2^exp. */
698 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
700 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
701 _GL_CXXALIASWARN (ldexpf);
702 #elif defined GNULIB_POSIXCHECK
704 # if HAVE_RAW_DECL_LDEXPF
705 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
706 "use gnulib module ldexpf for portability");
710 /* Return x * 2^exp. */
711 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
712 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
714 # define ldexpl rpl_ldexpl
716 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
717 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
719 # if !@HAVE_DECL_LDEXPL@
720 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
723 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
727 _GL_CXXALIASWARN (ldexpl);
729 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
731 # if HAVE_RAW_DECL_LDEXPL
732 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
733 "use gnulib module ldexpl for portability");
739 # if !@HAVE_DECL_LOGB@
740 _GL_EXTERN_C double logb (double x);
742 #elif defined GNULIB_POSIXCHECK
744 # if HAVE_RAW_DECL_LOGB
745 _GL_WARN_ON_USE (logb, "logb is unportable - "
746 "use gnulib module logb for portability");
754 _GL_FUNCDECL_SYS (logf, float, (float x));
756 _GL_CXXALIAS_SYS (logf, float, (float x));
757 _GL_CXXALIASWARN (logf);
758 #elif defined GNULIB_POSIXCHECK
760 # if HAVE_RAW_DECL_LOGF
761 _GL_WARN_ON_USE (logf, "logf is unportable - "
762 "use gnulib module logf for portability");
767 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
768 _GL_FUNCDECL_SYS (logl, long double, (long double x));
770 _GL_CXXALIAS_SYS (logl, long double, (long double x));
771 _GL_CXXALIASWARN (logl);
772 #elif defined GNULIB_POSIXCHECK
774 # if HAVE_RAW_DECL_LOGL
775 _GL_WARN_ON_USE (logl, "logl is unportable - "
776 "use gnulib module mathl for portability");
784 _GL_FUNCDECL_SYS (log10f, float, (float x));
786 _GL_CXXALIAS_SYS (log10f, float, (float x));
787 _GL_CXXALIASWARN (log10f);
788 #elif defined GNULIB_POSIXCHECK
790 # if HAVE_RAW_DECL_LOG10F
791 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
792 "use gnulib module log10f for portability");
800 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
802 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
803 _GL_CXXALIASWARN (modff);
804 #elif defined GNULIB_POSIXCHECK
806 # if HAVE_RAW_DECL_MODFF
807 _GL_WARN_ON_USE (modff, "modff is unportable - "
808 "use gnulib module modff for portability");
816 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
818 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
819 _GL_CXXALIASWARN (powf);
820 #elif defined GNULIB_POSIXCHECK
822 # if HAVE_RAW_DECL_POWF
823 _GL_WARN_ON_USE (powf, "powf is unportable - "
824 "use gnulib module powf for portability");
831 _GL_FUNCDECL_SYS (rintf, float, (float x));
833 _GL_CXXALIAS_SYS (rintf, float, (float x));
834 _GL_CXXALIASWARN (rintf);
835 #elif defined GNULIB_POSIXCHECK
837 # if HAVE_RAW_DECL_RINTF
838 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
839 "use gnulib module rintf for portability");
845 _GL_FUNCDECL_SYS (rint, double, (double x));
847 _GL_CXXALIAS_SYS (rint, double, (double x));
848 _GL_CXXALIASWARN (rint);
849 #elif defined GNULIB_POSIXCHECK
851 # if HAVE_RAW_DECL_RINT
852 _GL_WARN_ON_USE (rint, "rint is unportable - "
853 "use gnulib module rint for portability");
859 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
861 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
862 _GL_CXXALIASWARN (rintl);
863 #elif defined GNULIB_POSIXCHECK
865 # if HAVE_RAW_DECL_RINTL
866 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
867 "use gnulib module rintl for portability");
873 # if @REPLACE_ROUNDF@
874 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
876 # define roundf rpl_roundf
878 _GL_FUNCDECL_RPL (roundf, float, (float x));
879 _GL_CXXALIAS_RPL (roundf, float, (float x));
881 # if !@HAVE_DECL_ROUNDF@
882 _GL_FUNCDECL_SYS (roundf, float, (float x));
884 _GL_CXXALIAS_SYS (roundf, float, (float x));
886 _GL_CXXALIASWARN (roundf);
887 #elif defined GNULIB_POSIXCHECK
889 # if HAVE_RAW_DECL_ROUNDF
890 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
891 "use gnulib module roundf for portability");
897 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
899 # define round rpl_round
901 _GL_FUNCDECL_RPL (round, double, (double x));
902 _GL_CXXALIAS_RPL (round, double, (double x));
904 # if !@HAVE_DECL_ROUND@
905 _GL_FUNCDECL_SYS (round, double, (double x));
907 _GL_CXXALIAS_SYS (round, double, (double x));
909 _GL_CXXALIASWARN (round);
910 #elif defined GNULIB_POSIXCHECK
912 # if HAVE_RAW_DECL_ROUND
913 _GL_WARN_ON_USE (round, "round is unportable - "
914 "use gnulib module round for portability");
919 # if @REPLACE_ROUNDL@
920 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
922 # define roundl rpl_roundl
924 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
925 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
927 # if !@HAVE_DECL_ROUNDL@
928 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
930 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
932 _GL_CXXALIASWARN (roundl);
933 #elif defined GNULIB_POSIXCHECK
935 # if HAVE_RAW_DECL_ROUNDL
936 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
937 "use gnulib module roundl for portability");
945 _GL_FUNCDECL_SYS (sinf, float, (float x));
947 _GL_CXXALIAS_SYS (sinf, float, (float x));
948 _GL_CXXALIASWARN (sinf);
949 #elif defined GNULIB_POSIXCHECK
951 # if HAVE_RAW_DECL_SINF
952 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
953 "use gnulib module sinf for portability");
958 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
959 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
961 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
962 _GL_CXXALIASWARN (sinl);
963 #elif defined GNULIB_POSIXCHECK
965 # if HAVE_RAW_DECL_SINL
966 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
967 "use gnulib module mathl for portability");
975 _GL_FUNCDECL_SYS (sinhf, float, (float x));
977 _GL_CXXALIAS_SYS (sinhf, float, (float x));
978 _GL_CXXALIASWARN (sinhf);
979 #elif defined GNULIB_POSIXCHECK
981 # if HAVE_RAW_DECL_SINHF
982 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
983 "use gnulib module sinhf for portability");
991 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
993 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
994 _GL_CXXALIASWARN (sqrtf);
995 #elif defined GNULIB_POSIXCHECK
997 # if HAVE_RAW_DECL_SQRTF
998 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
999 "use gnulib module sqrtf for portability");
1004 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1005 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1007 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1008 _GL_CXXALIASWARN (sqrtl);
1009 #elif defined GNULIB_POSIXCHECK
1011 # if HAVE_RAW_DECL_SQRTL
1012 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1013 "use gnulib module mathl for portability");
1021 _GL_FUNCDECL_SYS (tanf, float, (float x));
1023 _GL_CXXALIAS_SYS (tanf, float, (float x));
1024 _GL_CXXALIASWARN (tanf);
1025 #elif defined GNULIB_POSIXCHECK
1027 # if HAVE_RAW_DECL_TANF
1028 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1029 "use gnulib module tanf for portability");
1034 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1035 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1037 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1038 _GL_CXXALIASWARN (tanl);
1039 #elif defined GNULIB_POSIXCHECK
1041 # if HAVE_RAW_DECL_TANL
1042 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1043 "use gnulib module mathl for portability");
1051 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1053 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1054 _GL_CXXALIASWARN (tanhf);
1055 #elif defined GNULIB_POSIXCHECK
1057 # if HAVE_RAW_DECL_TANHF
1058 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1059 "use gnulib module tanhf for portability");
1065 # if @REPLACE_TRUNCF@
1066 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1067 # define truncf rpl_truncf
1069 _GL_FUNCDECL_RPL (truncf, float, (float x));
1070 _GL_CXXALIAS_RPL (truncf, float, (float x));
1072 # if !@HAVE_DECL_TRUNCF@
1073 _GL_FUNCDECL_SYS (truncf, float, (float x));
1075 _GL_CXXALIAS_SYS (truncf, float, (float x));
1077 _GL_CXXALIASWARN (truncf);
1078 #elif defined GNULIB_POSIXCHECK
1080 # if HAVE_RAW_DECL_TRUNCF
1081 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1082 "use gnulib module truncf for portability");
1087 # if @REPLACE_TRUNC@
1088 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1089 # define trunc rpl_trunc
1091 _GL_FUNCDECL_RPL (trunc, double, (double x));
1092 _GL_CXXALIAS_RPL (trunc, double, (double x));
1094 # if !@HAVE_DECL_TRUNC@
1095 _GL_FUNCDECL_SYS (trunc, double, (double x));
1097 _GL_CXXALIAS_SYS (trunc, double, (double x));
1099 _GL_CXXALIASWARN (trunc);
1100 #elif defined GNULIB_POSIXCHECK
1102 # if HAVE_RAW_DECL_TRUNC
1103 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1104 "use gnulib module trunc for portability");
1109 # if @REPLACE_TRUNCL@
1110 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1112 # define truncl rpl_truncl
1114 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1115 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1117 # if !@HAVE_DECL_TRUNCL@
1118 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1120 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1122 _GL_CXXALIASWARN (truncl);
1123 #elif defined GNULIB_POSIXCHECK
1125 # if HAVE_RAW_DECL_TRUNCL
1126 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1127 "use gnulib module truncl for portability");
1132 /* Definitions of function-like macros come here, after the function
1136 #if @GNULIB_ISFINITE@
1137 # if @REPLACE_ISFINITE@
1138 _GL_EXTERN_C int gl_isfinitef (float x);
1139 _GL_EXTERN_C int gl_isfinited (double x);
1140 _GL_EXTERN_C int gl_isfinitel (long double x);
1142 # define isfinite(x) \
1143 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1144 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1149 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1151 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1154 #elif defined GNULIB_POSIXCHECK
1155 # if defined isfinite
1156 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1158 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1164 # if @REPLACE_ISINF@
1165 _GL_EXTERN_C int gl_isinff (float x);
1166 _GL_EXTERN_C int gl_isinfd (double x);
1167 _GL_EXTERN_C int gl_isinfl (long double x);
1170 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1171 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1176 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1178 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1181 #elif defined GNULIB_POSIXCHECK
1183 _GL_WARN_REAL_FLOATING_DECL (isinf);
1185 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1191 /* Test for NaN for 'float' numbers. */
1193 /* The original <math.h> included above provides a declaration of isnan macro
1194 or (older) isnanf function. */
1196 /* GCC 4.0 and newer provides three built-ins for isnan. */
1198 # define isnanf(x) __builtin_isnanf ((float)(x))
1199 # elif defined isnan
1201 # define isnanf(x) isnan ((float)(x))
1204 /* Test whether X is a NaN. */
1206 # define isnanf rpl_isnanf
1207 _GL_EXTERN_C int isnanf (float x);
1212 /* Test for NaN for 'double' numbers.
1213 This function is a gnulib extension, unlike isnan() which applied only
1214 to 'double' numbers earlier but now is a type-generic macro. */
1216 /* The original <math.h> included above provides a declaration of isnan
1219 /* GCC 4.0 and newer provides three built-ins for isnan. */
1221 # define isnand(x) __builtin_isnan ((double)(x))
1224 # define isnand(x) isnan ((double)(x))
1227 /* Test whether X is a NaN. */
1229 # define isnand rpl_isnand
1230 _GL_EXTERN_C int isnand (double x);
1235 /* Test for NaN for 'long double' numbers. */
1237 /* The original <math.h> included above provides a declaration of isnan
1238 macro or (older) isnanl function. */
1240 /* GCC 4.0 and newer provides three built-ins for isnan. */
1242 # define isnanl(x) __builtin_isnanl ((long double)(x))
1243 # elif defined isnan
1245 # define isnanl(x) isnan ((long double)(x))
1248 /* Test whether X is a NaN. */
1250 # define isnanl rpl_isnanl
1251 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1255 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1257 # if @REPLACE_ISNAN@
1258 /* We can't just use the isnanf macro (e.g.) as exposed by
1259 isnanf.h (e.g.) here, because those may end up being macros
1260 that recursively expand back to isnan. So use the gnulib
1261 replacements for them directly. */
1262 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1263 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1265 _GL_EXTERN_C int rpl_isnanf (float x);
1266 # define gl_isnan_f(x) rpl_isnanf (x)
1268 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1269 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1271 _GL_EXTERN_C int rpl_isnand (double x);
1272 # define gl_isnan_d(x) rpl_isnand (x)
1274 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1275 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1277 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1278 # define gl_isnan_l(x) rpl_isnanl (x)
1282 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1283 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1285 # elif __GNUC__ >= 4
1288 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1289 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1290 __builtin_isnanf ((float)(x)))
1294 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1296 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1299 /* Ensure isnan is a macro. */
1301 # define isnan isnan
1304 #elif defined GNULIB_POSIXCHECK
1306 _GL_WARN_REAL_FLOATING_DECL (isnan);
1308 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1313 #if @GNULIB_SIGNBIT@
1314 # if @REPLACE_SIGNBIT_USING_GCC@
1316 /* GCC 4.0 and newer provides three built-ins for signbit. */
1317 # define signbit(x) \
1318 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1319 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1320 __builtin_signbitf (x))
1322 # if @REPLACE_SIGNBIT@
1324 _GL_EXTERN_C int gl_signbitf (float arg);
1325 _GL_EXTERN_C int gl_signbitd (double arg);
1326 _GL_EXTERN_C int gl_signbitl (long double arg);
1327 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1328 # define _GL_NUM_UINT_WORDS(type) \
1329 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1330 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1331 # define gl_signbitf_OPTIMIZED_MACRO
1332 # define gl_signbitf(arg) \
1333 ({ union { float _value; \
1334 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1336 _m._value = (arg); \
1337 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1340 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1341 # define gl_signbitd_OPTIMIZED_MACRO
1342 # define gl_signbitd(arg) \
1343 ({ union { double _value; \
1344 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1346 _m._value = (arg); \
1347 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1350 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1351 # define gl_signbitl_OPTIMIZED_MACRO
1352 # define gl_signbitl(arg) \
1353 ({ union { long double _value; \
1354 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1356 _m._value = (arg); \
1357 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1361 # define signbit(x) \
1362 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1363 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1368 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1370 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1373 #elif defined GNULIB_POSIXCHECK
1374 # if defined signbit
1375 _GL_WARN_REAL_FLOATING_DECL (signbit);
1377 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1382 #endif /* _@GUARD_PREFIX@_MATH_H */
1383 #endif /* _@GUARD_PREFIX@_MATH_H */