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@
499 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
501 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
503 _GL_CXXALIASWARN (floorl);
504 #elif defined GNULIB_POSIXCHECK
506 # if HAVE_RAW_DECL_FLOORL
507 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
508 "use gnulib module floorl for portability");
515 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
517 # define fmaf rpl_fmaf
519 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
520 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
523 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
525 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
527 _GL_CXXALIASWARN (fmaf);
528 #elif defined GNULIB_POSIXCHECK
530 # if HAVE_RAW_DECL_FMAF
531 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
532 "use gnulib module fmaf for portability");
538 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
542 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
543 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
546 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
548 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
550 _GL_CXXALIASWARN (fma);
551 #elif defined GNULIB_POSIXCHECK
553 # if HAVE_RAW_DECL_FMA
554 _GL_WARN_ON_USE (fma, "fma is unportable - "
555 "use gnulib module fma for portability");
561 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
563 # define fmal rpl_fmal
565 _GL_FUNCDECL_RPL (fmal, long double,
566 (long double x, long double y, long double z));
567 _GL_CXXALIAS_RPL (fmal, long double,
568 (long double x, long double y, long double z));
571 _GL_FUNCDECL_SYS (fmal, long double,
572 (long double x, long double y, long double z));
574 _GL_CXXALIAS_SYS (fmal, long double,
575 (long double x, long double y, long double z));
577 _GL_CXXALIASWARN (fmal);
578 #elif defined GNULIB_POSIXCHECK
580 # if HAVE_RAW_DECL_FMAL
581 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
582 "use gnulib module fmal for portability");
590 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
592 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
593 _GL_CXXALIASWARN (fmodf);
594 #elif defined GNULIB_POSIXCHECK
596 # if HAVE_RAW_DECL_FMODF
597 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
598 "use gnulib module fmodf for portability");
606 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
607 If x is zero: mantissa = x, exp = 0.
608 If x is infinite or NaN: mantissa = x, exp unspecified.
609 Store exp in *EXPPTR and return mantissa. */
611 # if @REPLACE_FREXPF@
612 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
614 # define frexpf rpl_frexpf
616 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
617 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
621 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
623 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
625 _GL_CXXALIASWARN (frexpf);
626 #elif defined GNULIB_POSIXCHECK
628 # if HAVE_RAW_DECL_FREXPF
629 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
630 "use gnulib module frexpf for portability");
637 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
638 If x is zero: mantissa = x, exp = 0.
639 If x is infinite or NaN: mantissa = x, exp unspecified.
640 Store exp in *EXPPTR and return mantissa. */
643 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
644 # define frexp rpl_frexp
646 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
647 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
649 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
651 _GL_CXXALIASWARN (frexp);
652 #elif defined GNULIB_POSIXCHECK
654 /* Assume frexp is always declared. */
655 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
656 "use gnulib module frexp for portability");
662 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
663 If x is zero: mantissa = x, exp = 0.
664 If x is infinite or NaN: mantissa = x, exp unspecified.
665 Store exp in *EXPPTR and return mantissa. */
666 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
667 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
669 # define frexpl rpl_frexpl
671 _GL_FUNCDECL_RPL (frexpl, long double,
672 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
673 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
675 # if !@HAVE_DECL_FREXPL@
676 _GL_FUNCDECL_SYS (frexpl, long double,
677 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
680 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
683 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
684 _GL_CXXALIASWARN (frexpl);
686 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
688 # if HAVE_RAW_DECL_FREXPL
689 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
690 "use gnulib module frexpl for portability");
695 /* Return x * 2^exp. */
699 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
701 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
702 _GL_CXXALIASWARN (ldexpf);
703 #elif defined GNULIB_POSIXCHECK
705 # if HAVE_RAW_DECL_LDEXPF
706 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
707 "use gnulib module ldexpf for portability");
711 /* Return x * 2^exp. */
712 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
713 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
715 # define ldexpl rpl_ldexpl
717 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
718 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
720 # if !@HAVE_DECL_LDEXPL@
721 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
724 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
728 _GL_CXXALIASWARN (ldexpl);
730 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
732 # if HAVE_RAW_DECL_LDEXPL
733 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
734 "use gnulib module ldexpl for portability");
740 # if !@HAVE_DECL_LOGB@
741 _GL_EXTERN_C double logb (double x);
743 #elif defined GNULIB_POSIXCHECK
745 # if HAVE_RAW_DECL_LOGB
746 _GL_WARN_ON_USE (logb, "logb is unportable - "
747 "use gnulib module logb for portability");
755 _GL_FUNCDECL_SYS (logf, float, (float x));
757 _GL_CXXALIAS_SYS (logf, float, (float x));
758 _GL_CXXALIASWARN (logf);
759 #elif defined GNULIB_POSIXCHECK
761 # if HAVE_RAW_DECL_LOGF
762 _GL_WARN_ON_USE (logf, "logf is unportable - "
763 "use gnulib module logf for portability");
768 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
769 _GL_FUNCDECL_SYS (logl, long double, (long double x));
771 _GL_CXXALIAS_SYS (logl, long double, (long double x));
772 _GL_CXXALIASWARN (logl);
773 #elif defined GNULIB_POSIXCHECK
775 # if HAVE_RAW_DECL_LOGL
776 _GL_WARN_ON_USE (logl, "logl is unportable - "
777 "use gnulib module mathl for portability");
785 _GL_FUNCDECL_SYS (log10f, float, (float x));
787 _GL_CXXALIAS_SYS (log10f, float, (float x));
788 _GL_CXXALIASWARN (log10f);
789 #elif defined GNULIB_POSIXCHECK
791 # if HAVE_RAW_DECL_LOG10F
792 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
793 "use gnulib module log10f for portability");
801 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
803 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
804 _GL_CXXALIASWARN (modff);
805 #elif defined GNULIB_POSIXCHECK
807 # if HAVE_RAW_DECL_MODFF
808 _GL_WARN_ON_USE (modff, "modff is unportable - "
809 "use gnulib module modff for portability");
817 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
819 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
820 _GL_CXXALIASWARN (powf);
821 #elif defined GNULIB_POSIXCHECK
823 # if HAVE_RAW_DECL_POWF
824 _GL_WARN_ON_USE (powf, "powf is unportable - "
825 "use gnulib module powf for portability");
832 _GL_FUNCDECL_SYS (rintf, float, (float x));
834 _GL_CXXALIAS_SYS (rintf, float, (float x));
835 _GL_CXXALIASWARN (rintf);
836 #elif defined GNULIB_POSIXCHECK
838 # if HAVE_RAW_DECL_RINTF
839 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
840 "use gnulib module rintf for portability");
846 _GL_FUNCDECL_SYS (rint, double, (double x));
848 _GL_CXXALIAS_SYS (rint, double, (double x));
849 _GL_CXXALIASWARN (rint);
850 #elif defined GNULIB_POSIXCHECK
852 # if HAVE_RAW_DECL_RINT
853 _GL_WARN_ON_USE (rint, "rint is unportable - "
854 "use gnulib module rint for portability");
860 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
862 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
863 _GL_CXXALIASWARN (rintl);
864 #elif defined GNULIB_POSIXCHECK
866 # if HAVE_RAW_DECL_RINTL
867 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
868 "use gnulib module rintl for portability");
874 # if @REPLACE_ROUNDF@
875 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
877 # define roundf rpl_roundf
879 _GL_FUNCDECL_RPL (roundf, float, (float x));
880 _GL_CXXALIAS_RPL (roundf, float, (float x));
882 # if !@HAVE_DECL_ROUNDF@
883 _GL_FUNCDECL_SYS (roundf, float, (float x));
885 _GL_CXXALIAS_SYS (roundf, float, (float x));
887 _GL_CXXALIASWARN (roundf);
888 #elif defined GNULIB_POSIXCHECK
890 # if HAVE_RAW_DECL_ROUNDF
891 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
892 "use gnulib module roundf for portability");
898 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
900 # define round rpl_round
902 _GL_FUNCDECL_RPL (round, double, (double x));
903 _GL_CXXALIAS_RPL (round, double, (double x));
905 # if !@HAVE_DECL_ROUND@
906 _GL_FUNCDECL_SYS (round, double, (double x));
908 _GL_CXXALIAS_SYS (round, double, (double x));
910 _GL_CXXALIASWARN (round);
911 #elif defined GNULIB_POSIXCHECK
913 # if HAVE_RAW_DECL_ROUND
914 _GL_WARN_ON_USE (round, "round is unportable - "
915 "use gnulib module round for portability");
920 # if @REPLACE_ROUNDL@
921 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
923 # define roundl rpl_roundl
925 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
926 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
928 # if !@HAVE_DECL_ROUNDL@
929 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
931 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
933 _GL_CXXALIASWARN (roundl);
934 #elif defined GNULIB_POSIXCHECK
936 # if HAVE_RAW_DECL_ROUNDL
937 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
938 "use gnulib module roundl for portability");
946 _GL_FUNCDECL_SYS (sinf, float, (float x));
948 _GL_CXXALIAS_SYS (sinf, float, (float x));
949 _GL_CXXALIASWARN (sinf);
950 #elif defined GNULIB_POSIXCHECK
952 # if HAVE_RAW_DECL_SINF
953 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
954 "use gnulib module sinf for portability");
959 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
960 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
962 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
963 _GL_CXXALIASWARN (sinl);
964 #elif defined GNULIB_POSIXCHECK
966 # if HAVE_RAW_DECL_SINL
967 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
968 "use gnulib module mathl for portability");
976 _GL_FUNCDECL_SYS (sinhf, float, (float x));
978 _GL_CXXALIAS_SYS (sinhf, float, (float x));
979 _GL_CXXALIASWARN (sinhf);
980 #elif defined GNULIB_POSIXCHECK
982 # if HAVE_RAW_DECL_SINHF
983 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
984 "use gnulib module sinhf for portability");
992 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
994 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
995 _GL_CXXALIASWARN (sqrtf);
996 #elif defined GNULIB_POSIXCHECK
998 # if HAVE_RAW_DECL_SQRTF
999 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1000 "use gnulib module sqrtf for portability");
1005 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1006 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1008 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1009 _GL_CXXALIASWARN (sqrtl);
1010 #elif defined GNULIB_POSIXCHECK
1012 # if HAVE_RAW_DECL_SQRTL
1013 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1014 "use gnulib module mathl for portability");
1022 _GL_FUNCDECL_SYS (tanf, float, (float x));
1024 _GL_CXXALIAS_SYS (tanf, float, (float x));
1025 _GL_CXXALIASWARN (tanf);
1026 #elif defined GNULIB_POSIXCHECK
1028 # if HAVE_RAW_DECL_TANF
1029 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1030 "use gnulib module tanf for portability");
1035 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1036 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1038 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1039 _GL_CXXALIASWARN (tanl);
1040 #elif defined GNULIB_POSIXCHECK
1042 # if HAVE_RAW_DECL_TANL
1043 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1044 "use gnulib module mathl for portability");
1052 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1054 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1055 _GL_CXXALIASWARN (tanhf);
1056 #elif defined GNULIB_POSIXCHECK
1058 # if HAVE_RAW_DECL_TANHF
1059 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1060 "use gnulib module tanhf for portability");
1066 # if @REPLACE_TRUNCF@
1067 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1068 # define truncf rpl_truncf
1070 _GL_FUNCDECL_RPL (truncf, float, (float x));
1071 _GL_CXXALIAS_RPL (truncf, float, (float x));
1073 # if !@HAVE_DECL_TRUNCF@
1074 _GL_FUNCDECL_SYS (truncf, float, (float x));
1076 _GL_CXXALIAS_SYS (truncf, float, (float x));
1078 _GL_CXXALIASWARN (truncf);
1079 #elif defined GNULIB_POSIXCHECK
1081 # if HAVE_RAW_DECL_TRUNCF
1082 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1083 "use gnulib module truncf for portability");
1088 # if @REPLACE_TRUNC@
1089 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1090 # define trunc rpl_trunc
1092 _GL_FUNCDECL_RPL (trunc, double, (double x));
1093 _GL_CXXALIAS_RPL (trunc, double, (double x));
1095 # if !@HAVE_DECL_TRUNC@
1096 _GL_FUNCDECL_SYS (trunc, double, (double x));
1098 _GL_CXXALIAS_SYS (trunc, double, (double x));
1100 _GL_CXXALIASWARN (trunc);
1101 #elif defined GNULIB_POSIXCHECK
1103 # if HAVE_RAW_DECL_TRUNC
1104 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1105 "use gnulib module trunc for portability");
1110 # if @REPLACE_TRUNCL@
1111 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1113 # define truncl rpl_truncl
1115 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1116 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1118 # if !@HAVE_DECL_TRUNCL@
1119 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1121 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1123 _GL_CXXALIASWARN (truncl);
1124 #elif defined GNULIB_POSIXCHECK
1126 # if HAVE_RAW_DECL_TRUNCL
1127 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1128 "use gnulib module truncl for portability");
1133 /* Definitions of function-like macros come here, after the function
1137 #if @GNULIB_ISFINITE@
1138 # if @REPLACE_ISFINITE@
1139 _GL_EXTERN_C int gl_isfinitef (float x);
1140 _GL_EXTERN_C int gl_isfinited (double x);
1141 _GL_EXTERN_C int gl_isfinitel (long double x);
1143 # define isfinite(x) \
1144 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1145 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1150 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1152 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1155 #elif defined GNULIB_POSIXCHECK
1156 # if defined isfinite
1157 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1159 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1165 # if @REPLACE_ISINF@
1166 _GL_EXTERN_C int gl_isinff (float x);
1167 _GL_EXTERN_C int gl_isinfd (double x);
1168 _GL_EXTERN_C int gl_isinfl (long double x);
1171 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1172 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1177 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1179 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1182 #elif defined GNULIB_POSIXCHECK
1184 _GL_WARN_REAL_FLOATING_DECL (isinf);
1186 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1192 /* Test for NaN for 'float' numbers. */
1194 /* The original <math.h> included above provides a declaration of isnan macro
1195 or (older) isnanf function. */
1197 /* GCC 4.0 and newer provides three built-ins for isnan. */
1199 # define isnanf(x) __builtin_isnanf ((float)(x))
1200 # elif defined isnan
1202 # define isnanf(x) isnan ((float)(x))
1205 /* Test whether X is a NaN. */
1207 # define isnanf rpl_isnanf
1208 _GL_EXTERN_C int isnanf (float x);
1213 /* Test for NaN for 'double' numbers.
1214 This function is a gnulib extension, unlike isnan() which applied only
1215 to 'double' numbers earlier but now is a type-generic macro. */
1217 /* The original <math.h> included above provides a declaration of isnan
1220 /* GCC 4.0 and newer provides three built-ins for isnan. */
1222 # define isnand(x) __builtin_isnan ((double)(x))
1225 # define isnand(x) isnan ((double)(x))
1228 /* Test whether X is a NaN. */
1230 # define isnand rpl_isnand
1231 _GL_EXTERN_C int isnand (double x);
1236 /* Test for NaN for 'long double' numbers. */
1238 /* The original <math.h> included above provides a declaration of isnan
1239 macro or (older) isnanl function. */
1241 /* GCC 4.0 and newer provides three built-ins for isnan. */
1243 # define isnanl(x) __builtin_isnanl ((long double)(x))
1244 # elif defined isnan
1246 # define isnanl(x) isnan ((long double)(x))
1249 /* Test whether X is a NaN. */
1251 # define isnanl rpl_isnanl
1252 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1256 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1258 # if @REPLACE_ISNAN@
1259 /* We can't just use the isnanf macro (e.g.) as exposed by
1260 isnanf.h (e.g.) here, because those may end up being macros
1261 that recursively expand back to isnan. So use the gnulib
1262 replacements for them directly. */
1263 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1264 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1266 _GL_EXTERN_C int rpl_isnanf (float x);
1267 # define gl_isnan_f(x) rpl_isnanf (x)
1269 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1270 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1272 _GL_EXTERN_C int rpl_isnand (double x);
1273 # define gl_isnan_d(x) rpl_isnand (x)
1275 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1276 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1278 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1279 # define gl_isnan_l(x) rpl_isnanl (x)
1283 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1284 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1286 # elif __GNUC__ >= 4
1289 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1290 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1291 __builtin_isnanf ((float)(x)))
1295 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1297 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1300 /* Ensure isnan is a macro. */
1302 # define isnan isnan
1305 #elif defined GNULIB_POSIXCHECK
1307 _GL_WARN_REAL_FLOATING_DECL (isnan);
1309 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1314 #if @GNULIB_SIGNBIT@
1315 # if @REPLACE_SIGNBIT_USING_GCC@
1317 /* GCC 4.0 and newer provides three built-ins for signbit. */
1318 # define signbit(x) \
1319 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1320 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1321 __builtin_signbitf (x))
1323 # if @REPLACE_SIGNBIT@
1325 _GL_EXTERN_C int gl_signbitf (float arg);
1326 _GL_EXTERN_C int gl_signbitd (double arg);
1327 _GL_EXTERN_C int gl_signbitl (long double arg);
1328 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1329 # define _GL_NUM_UINT_WORDS(type) \
1330 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1331 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1332 # define gl_signbitf_OPTIMIZED_MACRO
1333 # define gl_signbitf(arg) \
1334 ({ union { float _value; \
1335 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1337 _m._value = (arg); \
1338 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1341 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1342 # define gl_signbitd_OPTIMIZED_MACRO
1343 # define gl_signbitd(arg) \
1344 ({ union { double _value; \
1345 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1347 _m._value = (arg); \
1348 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1351 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1352 # define gl_signbitl_OPTIMIZED_MACRO
1353 # define gl_signbitl(arg) \
1354 ({ union { long double _value; \
1355 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1357 _m._value = (arg); \
1358 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1362 # define signbit(x) \
1363 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1364 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1369 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1371 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1374 #elif defined GNULIB_POSIXCHECK
1375 # if defined signbit
1376 _GL_WARN_REAL_FLOATING_DECL (signbit);
1378 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1383 #endif /* _@GUARD_PREFIX@_MATH_H */
1384 #endif /* _@GUARD_PREFIX@_MATH_H */