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@
303 _GL_FUNCDECL_SYS (ceill, long double, (long double x));
305 _GL_CXXALIAS_SYS (ceill, long double, (long double x));
307 _GL_CXXALIASWARN (ceill);
308 #elif defined GNULIB_POSIXCHECK
310 # if HAVE_RAW_DECL_CEILL
311 _GL_WARN_ON_USE (ceill, "ceill is unportable - "
312 "use gnulib module ceill for portability");
317 #if @GNULIB_COPYSIGNF@
318 # if !@HAVE_COPYSIGNF@
319 _GL_FUNCDECL_SYS (copysignf, float, (float x, float y));
321 _GL_CXXALIAS_SYS (copysignf, float, (float x, float y));
322 _GL_CXXALIASWARN (copysignf);
323 #elif defined GNULIB_POSIXCHECK
325 # if HAVE_RAW_DECL_COPYSIGNF
326 _GL_WARN_ON_USE (copysignf, "copysignf is unportable - "
327 "use gnulib module copysignf for portability");
331 #if @GNULIB_COPYSIGN@
332 # if !@HAVE_COPYSIGN@
333 _GL_FUNCDECL_SYS (copysign, double, (double x, double y));
335 _GL_CXXALIAS_SYS (copysign, double, (double x, double y));
336 _GL_CXXALIASWARN (copysign);
337 #elif defined GNULIB_POSIXCHECK
339 # if HAVE_RAW_DECL_COPYSIGN
340 _GL_WARN_ON_USE (copysign, "copysign is unportable - "
341 "use gnulib module copysign for portability");
345 #if @GNULIB_COPYSIGNL@
346 # if !@HAVE_COPYSIGNL@
347 _GL_FUNCDECL_SYS (copysignl, long double, (long double x, long double y));
349 _GL_CXXALIAS_SYS (copysignl, long double, (long double x, long double y));
350 _GL_CXXALIASWARN (copysignl);
351 #elif defined GNULIB_POSIXCHECK
353 # if HAVE_RAW_DECL_COPYSIGNL
354 _GL_WARN_ON_USE (copysign, "copysignl is unportable - "
355 "use gnulib module copysignl for portability");
363 _GL_FUNCDECL_SYS (cosf, float, (float x));
365 _GL_CXXALIAS_SYS (cosf, float, (float x));
366 _GL_CXXALIASWARN (cosf);
367 #elif defined GNULIB_POSIXCHECK
369 # if HAVE_RAW_DECL_COSF
370 _GL_WARN_ON_USE (cosf, "cosf is unportable - "
371 "use gnulib module cosf for portability");
376 # if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
377 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
379 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
380 _GL_CXXALIASWARN (cosl);
381 #elif defined GNULIB_POSIXCHECK
383 # if HAVE_RAW_DECL_COSL
384 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
385 "use gnulib module mathl for portability");
393 _GL_FUNCDECL_SYS (coshf, float, (float x));
395 _GL_CXXALIAS_SYS (coshf, float, (float x));
396 _GL_CXXALIASWARN (coshf);
397 #elif defined GNULIB_POSIXCHECK
399 # if HAVE_RAW_DECL_COSHF
400 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
401 "use gnulib module coshf for portability");
409 _GL_FUNCDECL_SYS (expf, float, (float x));
411 _GL_CXXALIAS_SYS (expf, float, (float x));
412 _GL_CXXALIASWARN (expf);
413 #elif defined GNULIB_POSIXCHECK
415 # if HAVE_RAW_DECL_EXPF
416 _GL_WARN_ON_USE (expf, "expf is unportable - "
417 "use gnulib module expf for portability");
422 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
424 _GL_FUNCDECL_SYS (expl, long double, (long double x));
426 _GL_CXXALIAS_SYS (expl, long double, (long double x));
427 _GL_CXXALIASWARN (expl);
428 #elif defined GNULIB_POSIXCHECK
430 # if HAVE_RAW_DECL_EXPL
431 _GL_WARN_ON_USE (expl, "expl is unportable - "
432 "use gnulib module mathl for portability");
440 _GL_FUNCDECL_SYS (fabsf, float, (float x));
442 _GL_CXXALIAS_SYS (fabsf, float, (float x));
443 _GL_CXXALIASWARN (fabsf);
444 #elif defined GNULIB_POSIXCHECK
446 # if HAVE_RAW_DECL_FABSF
447 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
448 "use gnulib module fabsf for portability");
454 # if @REPLACE_FLOORF@
455 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
457 # define floorf rpl_floorf
459 _GL_FUNCDECL_RPL (floorf, float, (float x));
460 _GL_CXXALIAS_RPL (floorf, float, (float x));
462 # if !@HAVE_DECL_FLOORF@
464 _GL_FUNCDECL_SYS (floorf, float, (float x));
466 _GL_CXXALIAS_SYS (floorf, float, (float x));
468 _GL_CXXALIASWARN (floorf);
469 #elif defined GNULIB_POSIXCHECK
471 # if HAVE_RAW_DECL_FLOORF
472 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
473 "use gnulib module floorf for portability");
479 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
480 # define floor rpl_floor
482 _GL_FUNCDECL_RPL (floor, double, (double x));
483 _GL_CXXALIAS_RPL (floor, double, (double x));
485 _GL_CXXALIAS_SYS (floor, double, (double x));
487 _GL_CXXALIASWARN (floor);
491 # if @REPLACE_FLOORL@
492 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
494 # define floorl rpl_floorl
496 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
497 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
499 # if !@HAVE_DECL_FLOORL@
501 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
503 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
505 _GL_CXXALIASWARN (floorl);
506 #elif defined GNULIB_POSIXCHECK
508 # if HAVE_RAW_DECL_FLOORL
509 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
510 "use gnulib module floorl for portability");
517 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
519 # define fmaf rpl_fmaf
521 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
522 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
525 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
527 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
529 _GL_CXXALIASWARN (fmaf);
530 #elif defined GNULIB_POSIXCHECK
532 # if HAVE_RAW_DECL_FMAF
533 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
534 "use gnulib module fmaf for portability");
540 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
544 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
545 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
548 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
550 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
552 _GL_CXXALIASWARN (fma);
553 #elif defined GNULIB_POSIXCHECK
555 # if HAVE_RAW_DECL_FMA
556 _GL_WARN_ON_USE (fma, "fma is unportable - "
557 "use gnulib module fma for portability");
563 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
565 # define fmal rpl_fmal
567 _GL_FUNCDECL_RPL (fmal, long double,
568 (long double x, long double y, long double z));
569 _GL_CXXALIAS_RPL (fmal, long double,
570 (long double x, long double y, long double z));
573 _GL_FUNCDECL_SYS (fmal, long double,
574 (long double x, long double y, long double z));
576 _GL_CXXALIAS_SYS (fmal, long double,
577 (long double x, long double y, long double z));
579 _GL_CXXALIASWARN (fmal);
580 #elif defined GNULIB_POSIXCHECK
582 # if HAVE_RAW_DECL_FMAL
583 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
584 "use gnulib module fmal for portability");
592 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
594 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
595 _GL_CXXALIASWARN (fmodf);
596 #elif defined GNULIB_POSIXCHECK
598 # if HAVE_RAW_DECL_FMODF
599 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
600 "use gnulib module fmodf for portability");
608 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
609 If x is zero: mantissa = x, exp = 0.
610 If x is infinite or NaN: mantissa = x, exp unspecified.
611 Store exp in *EXPPTR and return mantissa. */
613 # if @REPLACE_FREXPF@
614 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
616 # define frexpf rpl_frexpf
618 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
619 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
623 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
625 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
627 _GL_CXXALIASWARN (frexpf);
628 #elif defined GNULIB_POSIXCHECK
630 # if HAVE_RAW_DECL_FREXPF
631 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
632 "use gnulib module frexpf for portability");
639 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
640 If x is zero: mantissa = x, exp = 0.
641 If x is infinite or NaN: mantissa = x, exp unspecified.
642 Store exp in *EXPPTR and return mantissa. */
645 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
646 # define frexp rpl_frexp
648 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
649 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
651 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
653 _GL_CXXALIASWARN (frexp);
654 #elif defined GNULIB_POSIXCHECK
656 /* Assume frexp is always declared. */
657 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
658 "use gnulib module frexp for portability");
664 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
665 If x is zero: mantissa = x, exp = 0.
666 If x is infinite or NaN: mantissa = x, exp unspecified.
667 Store exp in *EXPPTR and return mantissa. */
668 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
669 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
671 # define frexpl rpl_frexpl
673 _GL_FUNCDECL_RPL (frexpl, long double,
674 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
675 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
677 # if !@HAVE_DECL_FREXPL@
678 _GL_FUNCDECL_SYS (frexpl, long double,
679 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
682 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
685 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
686 _GL_CXXALIASWARN (frexpl);
688 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
690 # if HAVE_RAW_DECL_FREXPL
691 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
692 "use gnulib module frexpl for portability");
697 /* Return x * 2^exp. */
701 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
703 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
704 _GL_CXXALIASWARN (ldexpf);
705 #elif defined GNULIB_POSIXCHECK
707 # if HAVE_RAW_DECL_LDEXPF
708 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
709 "use gnulib module ldexpf for portability");
713 /* Return x * 2^exp. */
714 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
715 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
717 # define ldexpl rpl_ldexpl
719 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
720 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
722 # if !@HAVE_DECL_LDEXPL@
723 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
726 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
730 _GL_CXXALIASWARN (ldexpl);
732 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
734 # if HAVE_RAW_DECL_LDEXPL
735 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
736 "use gnulib module ldexpl for portability");
742 # if !@HAVE_DECL_LOGB@
743 _GL_EXTERN_C double logb (double x);
745 #elif defined GNULIB_POSIXCHECK
747 # if HAVE_RAW_DECL_LOGB
748 _GL_WARN_ON_USE (logb, "logb is unportable - "
749 "use gnulib module logb for portability");
757 _GL_FUNCDECL_SYS (logf, float, (float x));
759 _GL_CXXALIAS_SYS (logf, float, (float x));
760 _GL_CXXALIASWARN (logf);
761 #elif defined GNULIB_POSIXCHECK
763 # if HAVE_RAW_DECL_LOGF
764 _GL_WARN_ON_USE (logf, "logf is unportable - "
765 "use gnulib module logf for portability");
770 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
771 _GL_FUNCDECL_SYS (logl, long double, (long double x));
773 _GL_CXXALIAS_SYS (logl, long double, (long double x));
774 _GL_CXXALIASWARN (logl);
775 #elif defined GNULIB_POSIXCHECK
777 # if HAVE_RAW_DECL_LOGL
778 _GL_WARN_ON_USE (logl, "logl is unportable - "
779 "use gnulib module mathl for portability");
787 _GL_FUNCDECL_SYS (log10f, float, (float x));
789 _GL_CXXALIAS_SYS (log10f, float, (float x));
790 _GL_CXXALIASWARN (log10f);
791 #elif defined GNULIB_POSIXCHECK
793 # if HAVE_RAW_DECL_LOG10F
794 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
795 "use gnulib module log10f for portability");
803 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
805 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
806 _GL_CXXALIASWARN (modff);
807 #elif defined GNULIB_POSIXCHECK
809 # if HAVE_RAW_DECL_MODFF
810 _GL_WARN_ON_USE (modff, "modff is unportable - "
811 "use gnulib module modff for portability");
819 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
821 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
822 _GL_CXXALIASWARN (powf);
823 #elif defined GNULIB_POSIXCHECK
825 # if HAVE_RAW_DECL_POWF
826 _GL_WARN_ON_USE (powf, "powf is unportable - "
827 "use gnulib module powf for portability");
834 _GL_FUNCDECL_SYS (rintf, float, (float x));
836 _GL_CXXALIAS_SYS (rintf, float, (float x));
837 _GL_CXXALIASWARN (rintf);
838 #elif defined GNULIB_POSIXCHECK
840 # if HAVE_RAW_DECL_RINTF
841 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
842 "use gnulib module rintf for portability");
848 _GL_FUNCDECL_SYS (rint, double, (double x));
850 _GL_CXXALIAS_SYS (rint, double, (double x));
851 _GL_CXXALIASWARN (rint);
852 #elif defined GNULIB_POSIXCHECK
854 # if HAVE_RAW_DECL_RINT
855 _GL_WARN_ON_USE (rint, "rint is unportable - "
856 "use gnulib module rint for portability");
862 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
864 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
865 _GL_CXXALIASWARN (rintl);
866 #elif defined GNULIB_POSIXCHECK
868 # if HAVE_RAW_DECL_RINTL
869 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
870 "use gnulib module rintl for portability");
876 # if @REPLACE_ROUNDF@
877 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
879 # define roundf rpl_roundf
881 _GL_FUNCDECL_RPL (roundf, float, (float x));
882 _GL_CXXALIAS_RPL (roundf, float, (float x));
884 # if !@HAVE_DECL_ROUNDF@
885 _GL_FUNCDECL_SYS (roundf, float, (float x));
887 _GL_CXXALIAS_SYS (roundf, float, (float x));
889 _GL_CXXALIASWARN (roundf);
890 #elif defined GNULIB_POSIXCHECK
892 # if HAVE_RAW_DECL_ROUNDF
893 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
894 "use gnulib module roundf for portability");
900 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
902 # define round rpl_round
904 _GL_FUNCDECL_RPL (round, double, (double x));
905 _GL_CXXALIAS_RPL (round, double, (double x));
907 # if !@HAVE_DECL_ROUND@
908 _GL_FUNCDECL_SYS (round, double, (double x));
910 _GL_CXXALIAS_SYS (round, double, (double x));
912 _GL_CXXALIASWARN (round);
913 #elif defined GNULIB_POSIXCHECK
915 # if HAVE_RAW_DECL_ROUND
916 _GL_WARN_ON_USE (round, "round is unportable - "
917 "use gnulib module round for portability");
922 # if @REPLACE_ROUNDL@
923 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
925 # define roundl rpl_roundl
927 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
928 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
930 # if !@HAVE_DECL_ROUNDL@
931 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
933 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
935 _GL_CXXALIASWARN (roundl);
936 #elif defined GNULIB_POSIXCHECK
938 # if HAVE_RAW_DECL_ROUNDL
939 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
940 "use gnulib module roundl for portability");
948 _GL_FUNCDECL_SYS (sinf, float, (float x));
950 _GL_CXXALIAS_SYS (sinf, float, (float x));
951 _GL_CXXALIASWARN (sinf);
952 #elif defined GNULIB_POSIXCHECK
954 # if HAVE_RAW_DECL_SINF
955 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
956 "use gnulib module sinf for portability");
961 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
962 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
964 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
965 _GL_CXXALIASWARN (sinl);
966 #elif defined GNULIB_POSIXCHECK
968 # if HAVE_RAW_DECL_SINL
969 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
970 "use gnulib module mathl for portability");
978 _GL_FUNCDECL_SYS (sinhf, float, (float x));
980 _GL_CXXALIAS_SYS (sinhf, float, (float x));
981 _GL_CXXALIASWARN (sinhf);
982 #elif defined GNULIB_POSIXCHECK
984 # if HAVE_RAW_DECL_SINHF
985 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
986 "use gnulib module sinhf for portability");
994 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
996 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
997 _GL_CXXALIASWARN (sqrtf);
998 #elif defined GNULIB_POSIXCHECK
1000 # if HAVE_RAW_DECL_SQRTF
1001 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1002 "use gnulib module sqrtf for portability");
1007 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1009 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1011 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1012 _GL_CXXALIASWARN (sqrtl);
1013 #elif defined GNULIB_POSIXCHECK
1015 # if HAVE_RAW_DECL_SQRTL
1016 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1017 "use gnulib module mathl for portability");
1025 _GL_FUNCDECL_SYS (tanf, float, (float x));
1027 _GL_CXXALIAS_SYS (tanf, float, (float x));
1028 _GL_CXXALIASWARN (tanf);
1029 #elif defined GNULIB_POSIXCHECK
1031 # if HAVE_RAW_DECL_TANF
1032 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1033 "use gnulib module tanf for portability");
1038 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1039 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1041 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1042 _GL_CXXALIASWARN (tanl);
1043 #elif defined GNULIB_POSIXCHECK
1045 # if HAVE_RAW_DECL_TANL
1046 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1047 "use gnulib module mathl for portability");
1055 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1057 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1058 _GL_CXXALIASWARN (tanhf);
1059 #elif defined GNULIB_POSIXCHECK
1061 # if HAVE_RAW_DECL_TANHF
1062 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1063 "use gnulib module tanhf for portability");
1069 # if @REPLACE_TRUNCF@
1070 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1071 # define truncf rpl_truncf
1073 _GL_FUNCDECL_RPL (truncf, float, (float x));
1074 _GL_CXXALIAS_RPL (truncf, float, (float x));
1076 # if !@HAVE_DECL_TRUNCF@
1077 _GL_FUNCDECL_SYS (truncf, float, (float x));
1079 _GL_CXXALIAS_SYS (truncf, float, (float x));
1081 _GL_CXXALIASWARN (truncf);
1082 #elif defined GNULIB_POSIXCHECK
1084 # if HAVE_RAW_DECL_TRUNCF
1085 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1086 "use gnulib module truncf for portability");
1091 # if @REPLACE_TRUNC@
1092 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1093 # define trunc rpl_trunc
1095 _GL_FUNCDECL_RPL (trunc, double, (double x));
1096 _GL_CXXALIAS_RPL (trunc, double, (double x));
1098 # if !@HAVE_DECL_TRUNC@
1099 _GL_FUNCDECL_SYS (trunc, double, (double x));
1101 _GL_CXXALIAS_SYS (trunc, double, (double x));
1103 _GL_CXXALIASWARN (trunc);
1104 #elif defined GNULIB_POSIXCHECK
1106 # if HAVE_RAW_DECL_TRUNC
1107 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1108 "use gnulib module trunc for portability");
1113 # if @REPLACE_TRUNCL@
1114 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1116 # define truncl rpl_truncl
1118 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1119 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1121 # if !@HAVE_DECL_TRUNCL@
1122 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1124 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1126 _GL_CXXALIASWARN (truncl);
1127 #elif defined GNULIB_POSIXCHECK
1129 # if HAVE_RAW_DECL_TRUNCL
1130 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1131 "use gnulib module truncl for portability");
1136 /* Definitions of function-like macros come here, after the function
1140 #if @GNULIB_ISFINITE@
1141 # if @REPLACE_ISFINITE@
1142 _GL_EXTERN_C int gl_isfinitef (float x);
1143 _GL_EXTERN_C int gl_isfinited (double x);
1144 _GL_EXTERN_C int gl_isfinitel (long double x);
1146 # define isfinite(x) \
1147 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1148 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1153 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1155 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1158 #elif defined GNULIB_POSIXCHECK
1159 # if defined isfinite
1160 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1162 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1168 # if @REPLACE_ISINF@
1169 _GL_EXTERN_C int gl_isinff (float x);
1170 _GL_EXTERN_C int gl_isinfd (double x);
1171 _GL_EXTERN_C int gl_isinfl (long double x);
1174 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1175 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1180 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1182 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1185 #elif defined GNULIB_POSIXCHECK
1187 _GL_WARN_REAL_FLOATING_DECL (isinf);
1189 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1195 /* Test for NaN for 'float' numbers. */
1197 /* The original <math.h> included above provides a declaration of isnan macro
1198 or (older) isnanf function. */
1200 /* GCC 4.0 and newer provides three built-ins for isnan. */
1202 # define isnanf(x) __builtin_isnanf ((float)(x))
1203 # elif defined isnan
1205 # define isnanf(x) isnan ((float)(x))
1208 /* Test whether X is a NaN. */
1210 # define isnanf rpl_isnanf
1211 _GL_EXTERN_C int isnanf (float x);
1216 /* Test for NaN for 'double' numbers.
1217 This function is a gnulib extension, unlike isnan() which applied only
1218 to 'double' numbers earlier but now is a type-generic macro. */
1220 /* The original <math.h> included above provides a declaration of isnan
1223 /* GCC 4.0 and newer provides three built-ins for isnan. */
1225 # define isnand(x) __builtin_isnan ((double)(x))
1228 # define isnand(x) isnan ((double)(x))
1231 /* Test whether X is a NaN. */
1233 # define isnand rpl_isnand
1234 _GL_EXTERN_C int isnand (double x);
1239 /* Test for NaN for 'long double' numbers. */
1241 /* The original <math.h> included above provides a declaration of isnan
1242 macro or (older) isnanl function. */
1244 /* GCC 4.0 and newer provides three built-ins for isnan. */
1246 # define isnanl(x) __builtin_isnanl ((long double)(x))
1247 # elif defined isnan
1249 # define isnanl(x) isnan ((long double)(x))
1252 /* Test whether X is a NaN. */
1254 # define isnanl rpl_isnanl
1255 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1259 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1261 # if @REPLACE_ISNAN@
1262 /* We can't just use the isnanf macro (e.g.) as exposed by
1263 isnanf.h (e.g.) here, because those may end up being macros
1264 that recursively expand back to isnan. So use the gnulib
1265 replacements for them directly. */
1266 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1267 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1269 _GL_EXTERN_C int rpl_isnanf (float x);
1270 # define gl_isnan_f(x) rpl_isnanf (x)
1272 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1273 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1275 _GL_EXTERN_C int rpl_isnand (double x);
1276 # define gl_isnan_d(x) rpl_isnand (x)
1278 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1279 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1281 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1282 # define gl_isnan_l(x) rpl_isnanl (x)
1286 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1287 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1289 # elif __GNUC__ >= 4
1292 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1293 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1294 __builtin_isnanf ((float)(x)))
1298 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1300 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1303 /* Ensure isnan is a macro. */
1305 # define isnan isnan
1308 #elif defined GNULIB_POSIXCHECK
1310 _GL_WARN_REAL_FLOATING_DECL (isnan);
1312 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1317 #if @GNULIB_SIGNBIT@
1318 # if @REPLACE_SIGNBIT_USING_GCC@
1320 /* GCC 4.0 and newer provides three built-ins for signbit. */
1321 # define signbit(x) \
1322 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1323 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1324 __builtin_signbitf (x))
1326 # if @REPLACE_SIGNBIT@
1328 _GL_EXTERN_C int gl_signbitf (float arg);
1329 _GL_EXTERN_C int gl_signbitd (double arg);
1330 _GL_EXTERN_C int gl_signbitl (long double arg);
1331 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1332 # define _GL_NUM_UINT_WORDS(type) \
1333 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1334 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1335 # define gl_signbitf_OPTIMIZED_MACRO
1336 # define gl_signbitf(arg) \
1337 ({ union { float _value; \
1338 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1340 _m._value = (arg); \
1341 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1344 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1345 # define gl_signbitd_OPTIMIZED_MACRO
1346 # define gl_signbitd(arg) \
1347 ({ union { double _value; \
1348 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1350 _m._value = (arg); \
1351 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1354 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1355 # define gl_signbitl_OPTIMIZED_MACRO
1356 # define gl_signbitl(arg) \
1357 ({ union { long double _value; \
1358 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1360 _m._value = (arg); \
1361 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1365 # define signbit(x) \
1366 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1367 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1372 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1374 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1377 #elif defined GNULIB_POSIXCHECK
1378 # if defined signbit
1379 _GL_WARN_REAL_FLOATING_DECL (signbit);
1381 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1386 #endif /* _@GUARD_PREFIX@_MATH_H */
1387 #endif /* _@GUARD_PREFIX@_MATH_H */