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@
378 _GL_FUNCDECL_SYS (cosl, long double, (long double x));
380 _GL_CXXALIAS_SYS (cosl, long double, (long double x));
381 _GL_CXXALIASWARN (cosl);
382 #elif defined GNULIB_POSIXCHECK
384 # if HAVE_RAW_DECL_COSL
385 _GL_WARN_ON_USE (cosl, "cosl is unportable - "
386 "use gnulib module mathl for portability");
394 _GL_FUNCDECL_SYS (coshf, float, (float x));
396 _GL_CXXALIAS_SYS (coshf, float, (float x));
397 _GL_CXXALIASWARN (coshf);
398 #elif defined GNULIB_POSIXCHECK
400 # if HAVE_RAW_DECL_COSHF
401 _GL_WARN_ON_USE (coshf, "coshf is unportable - "
402 "use gnulib module coshf for portability");
410 _GL_FUNCDECL_SYS (expf, float, (float x));
412 _GL_CXXALIAS_SYS (expf, float, (float x));
413 _GL_CXXALIASWARN (expf);
414 #elif defined GNULIB_POSIXCHECK
416 # if HAVE_RAW_DECL_EXPF
417 _GL_WARN_ON_USE (expf, "expf is unportable - "
418 "use gnulib module expf for portability");
423 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
425 _GL_FUNCDECL_SYS (expl, long double, (long double x));
427 _GL_CXXALIAS_SYS (expl, long double, (long double x));
428 _GL_CXXALIASWARN (expl);
429 #elif defined GNULIB_POSIXCHECK
431 # if HAVE_RAW_DECL_EXPL
432 _GL_WARN_ON_USE (expl, "expl is unportable - "
433 "use gnulib module mathl for portability");
441 _GL_FUNCDECL_SYS (fabsf, float, (float x));
443 _GL_CXXALIAS_SYS (fabsf, float, (float x));
444 _GL_CXXALIASWARN (fabsf);
445 #elif defined GNULIB_POSIXCHECK
447 # if HAVE_RAW_DECL_FABSF
448 _GL_WARN_ON_USE (fabsf, "fabsf is unportable - "
449 "use gnulib module fabsf for portability");
455 # if @REPLACE_FLOORF@
456 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
458 # define floorf rpl_floorf
460 _GL_FUNCDECL_RPL (floorf, float, (float x));
461 _GL_CXXALIAS_RPL (floorf, float, (float x));
463 # if !@HAVE_DECL_FLOORF@
465 _GL_FUNCDECL_SYS (floorf, float, (float x));
467 _GL_CXXALIAS_SYS (floorf, float, (float x));
469 _GL_CXXALIASWARN (floorf);
470 #elif defined GNULIB_POSIXCHECK
472 # if HAVE_RAW_DECL_FLOORF
473 _GL_WARN_ON_USE (floorf, "floorf is unportable - "
474 "use gnulib module floorf for portability");
480 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
481 # define floor rpl_floor
483 _GL_FUNCDECL_RPL (floor, double, (double x));
484 _GL_CXXALIAS_RPL (floor, double, (double x));
486 _GL_CXXALIAS_SYS (floor, double, (double x));
488 _GL_CXXALIASWARN (floor);
492 # if @REPLACE_FLOORL@
493 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
495 # define floorl rpl_floorl
497 _GL_FUNCDECL_RPL (floorl, long double, (long double x));
498 _GL_CXXALIAS_RPL (floorl, long double, (long double x));
500 # if !@HAVE_DECL_FLOORL@
502 _GL_FUNCDECL_SYS (floorl, long double, (long double x));
504 _GL_CXXALIAS_SYS (floorl, long double, (long double x));
506 _GL_CXXALIASWARN (floorl);
507 #elif defined GNULIB_POSIXCHECK
509 # if HAVE_RAW_DECL_FLOORL
510 _GL_WARN_ON_USE (floorl, "floorl is unportable - "
511 "use gnulib module floorl for portability");
518 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
520 # define fmaf rpl_fmaf
522 _GL_FUNCDECL_RPL (fmaf, float, (float x, float y, float z));
523 _GL_CXXALIAS_RPL (fmaf, float, (float x, float y, float z));
526 _GL_FUNCDECL_SYS (fmaf, float, (float x, float y, float z));
528 _GL_CXXALIAS_SYS (fmaf, float, (float x, float y, float z));
530 _GL_CXXALIASWARN (fmaf);
531 #elif defined GNULIB_POSIXCHECK
533 # if HAVE_RAW_DECL_FMAF
534 _GL_WARN_ON_USE (fmaf, "fmaf is unportable - "
535 "use gnulib module fmaf for portability");
541 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
545 _GL_FUNCDECL_RPL (fma, double, (double x, double y, double z));
546 _GL_CXXALIAS_RPL (fma, double, (double x, double y, double z));
549 _GL_FUNCDECL_SYS (fma, double, (double x, double y, double z));
551 _GL_CXXALIAS_SYS (fma, double, (double x, double y, double z));
553 _GL_CXXALIASWARN (fma);
554 #elif defined GNULIB_POSIXCHECK
556 # if HAVE_RAW_DECL_FMA
557 _GL_WARN_ON_USE (fma, "fma is unportable - "
558 "use gnulib module fma for portability");
564 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
566 # define fmal rpl_fmal
568 _GL_FUNCDECL_RPL (fmal, long double,
569 (long double x, long double y, long double z));
570 _GL_CXXALIAS_RPL (fmal, long double,
571 (long double x, long double y, long double z));
574 _GL_FUNCDECL_SYS (fmal, long double,
575 (long double x, long double y, long double z));
577 _GL_CXXALIAS_SYS (fmal, long double,
578 (long double x, long double y, long double z));
580 _GL_CXXALIASWARN (fmal);
581 #elif defined GNULIB_POSIXCHECK
583 # if HAVE_RAW_DECL_FMAL
584 _GL_WARN_ON_USE (fmal, "fmal is unportable - "
585 "use gnulib module fmal for portability");
593 _GL_FUNCDECL_SYS (fmodf, float, (float x, float y));
595 _GL_CXXALIAS_SYS (fmodf, float, (float x, float y));
596 _GL_CXXALIASWARN (fmodf);
597 #elif defined GNULIB_POSIXCHECK
599 # if HAVE_RAW_DECL_FMODF
600 _GL_WARN_ON_USE (fmodf, "fmodf is unportable - "
601 "use gnulib module fmodf for portability");
609 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
610 If x is zero: mantissa = x, exp = 0.
611 If x is infinite or NaN: mantissa = x, exp unspecified.
612 Store exp in *EXPPTR and return mantissa. */
614 # if @REPLACE_FREXPF@
615 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
617 # define frexpf rpl_frexpf
619 _GL_FUNCDECL_RPL (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
620 _GL_CXXALIAS_RPL (frexpf, float, (float x, int *expptr));
624 _GL_FUNCDECL_SYS (frexpf, float, (float x, int *expptr) _GL_ARG_NONNULL ((2)));
626 _GL_CXXALIAS_SYS (frexpf, float, (float x, int *expptr));
628 _GL_CXXALIASWARN (frexpf);
629 #elif defined GNULIB_POSIXCHECK
631 # if HAVE_RAW_DECL_FREXPF
632 _GL_WARN_ON_USE (frexpf, "frexpf is unportable - "
633 "use gnulib module frexpf for portability");
640 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
641 If x is zero: mantissa = x, exp = 0.
642 If x is infinite or NaN: mantissa = x, exp unspecified.
643 Store exp in *EXPPTR and return mantissa. */
646 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
647 # define frexp rpl_frexp
649 _GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
650 _GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
652 _GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
654 _GL_CXXALIASWARN (frexp);
655 #elif defined GNULIB_POSIXCHECK
657 /* Assume frexp is always declared. */
658 _GL_WARN_ON_USE (frexp, "frexp is unportable - "
659 "use gnulib module frexp for portability");
665 If x finite and nonzero: 0.5 <= |mantissa| < 1.0.
666 If x is zero: mantissa = x, exp = 0.
667 If x is infinite or NaN: mantissa = x, exp unspecified.
668 Store exp in *EXPPTR and return mantissa. */
669 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
670 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
672 # define frexpl rpl_frexpl
674 _GL_FUNCDECL_RPL (frexpl, long double,
675 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
676 _GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
678 # if !@HAVE_DECL_FREXPL@
679 _GL_FUNCDECL_SYS (frexpl, long double,
680 (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
683 _GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
686 #if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@)
687 _GL_CXXALIASWARN (frexpl);
689 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
691 # if HAVE_RAW_DECL_FREXPL
692 _GL_WARN_ON_USE (frexpl, "frexpl is unportable - "
693 "use gnulib module frexpl for portability");
698 /* Return x * 2^exp. */
702 _GL_FUNCDECL_SYS (ldexpf, float, (float x, int exp));
704 _GL_CXXALIAS_SYS (ldexpf, float, (float x, int exp));
705 _GL_CXXALIASWARN (ldexpf);
706 #elif defined GNULIB_POSIXCHECK
708 # if HAVE_RAW_DECL_LDEXPF
709 _GL_WARN_ON_USE (ldexpf, "ldexpf is unportable - "
710 "use gnulib module ldexpf for portability");
714 /* Return x * 2^exp. */
715 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
716 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
718 # define ldexpl rpl_ldexpl
720 _GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
721 _GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
723 # if !@HAVE_DECL_LDEXPL@
724 _GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
727 _GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
731 _GL_CXXALIASWARN (ldexpl);
733 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
735 # if HAVE_RAW_DECL_LDEXPL
736 _GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - "
737 "use gnulib module ldexpl for portability");
743 # if !@HAVE_DECL_LOGB@
744 _GL_EXTERN_C double logb (double x);
746 #elif defined GNULIB_POSIXCHECK
748 # if HAVE_RAW_DECL_LOGB
749 _GL_WARN_ON_USE (logb, "logb is unportable - "
750 "use gnulib module logb for portability");
758 _GL_FUNCDECL_SYS (logf, float, (float x));
760 _GL_CXXALIAS_SYS (logf, float, (float x));
761 _GL_CXXALIASWARN (logf);
762 #elif defined GNULIB_POSIXCHECK
764 # if HAVE_RAW_DECL_LOGF
765 _GL_WARN_ON_USE (logf, "logf is unportable - "
766 "use gnulib module logf for portability");
771 # if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
773 _GL_FUNCDECL_SYS (logl, long double, (long double x));
775 _GL_CXXALIAS_SYS (logl, long double, (long double x));
776 _GL_CXXALIASWARN (logl);
777 #elif defined GNULIB_POSIXCHECK
779 # if HAVE_RAW_DECL_LOGL
780 _GL_WARN_ON_USE (logl, "logl is unportable - "
781 "use gnulib module mathl for portability");
789 _GL_FUNCDECL_SYS (log10f, float, (float x));
791 _GL_CXXALIAS_SYS (log10f, float, (float x));
792 _GL_CXXALIASWARN (log10f);
793 #elif defined GNULIB_POSIXCHECK
795 # if HAVE_RAW_DECL_LOG10F
796 _GL_WARN_ON_USE (log10f, "log10f is unportable - "
797 "use gnulib module log10f for portability");
805 _GL_FUNCDECL_SYS (modff, float, (float x, float *iptr) _GL_ARG_NONNULL ((2)));
807 _GL_CXXALIAS_SYS (modff, float, (float x, float *iptr));
808 _GL_CXXALIASWARN (modff);
809 #elif defined GNULIB_POSIXCHECK
811 # if HAVE_RAW_DECL_MODFF
812 _GL_WARN_ON_USE (modff, "modff is unportable - "
813 "use gnulib module modff for portability");
821 _GL_FUNCDECL_SYS (powf, float, (float x, float y));
823 _GL_CXXALIAS_SYS (powf, float, (float x, float y));
824 _GL_CXXALIASWARN (powf);
825 #elif defined GNULIB_POSIXCHECK
827 # if HAVE_RAW_DECL_POWF
828 _GL_WARN_ON_USE (powf, "powf is unportable - "
829 "use gnulib module powf for portability");
836 _GL_FUNCDECL_SYS (rintf, float, (float x));
838 _GL_CXXALIAS_SYS (rintf, float, (float x));
839 _GL_CXXALIASWARN (rintf);
840 #elif defined GNULIB_POSIXCHECK
842 # if HAVE_RAW_DECL_RINTF
843 _GL_WARN_ON_USE (rintf, "rintf is unportable - "
844 "use gnulib module rintf for portability");
850 _GL_FUNCDECL_SYS (rint, double, (double x));
852 _GL_CXXALIAS_SYS (rint, double, (double x));
853 _GL_CXXALIASWARN (rint);
854 #elif defined GNULIB_POSIXCHECK
856 # if HAVE_RAW_DECL_RINT
857 _GL_WARN_ON_USE (rint, "rint is unportable - "
858 "use gnulib module rint for portability");
864 _GL_FUNCDECL_SYS (rintl, long double, (long double x));
866 _GL_CXXALIAS_SYS (rintl, long double, (long double x));
867 _GL_CXXALIASWARN (rintl);
868 #elif defined GNULIB_POSIXCHECK
870 # if HAVE_RAW_DECL_RINTL
871 _GL_WARN_ON_USE (rintl, "rintl is unportable - "
872 "use gnulib module rintl for portability");
878 # if @REPLACE_ROUNDF@
879 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
881 # define roundf rpl_roundf
883 _GL_FUNCDECL_RPL (roundf, float, (float x));
884 _GL_CXXALIAS_RPL (roundf, float, (float x));
886 # if !@HAVE_DECL_ROUNDF@
887 _GL_FUNCDECL_SYS (roundf, float, (float x));
889 _GL_CXXALIAS_SYS (roundf, float, (float x));
891 _GL_CXXALIASWARN (roundf);
892 #elif defined GNULIB_POSIXCHECK
894 # if HAVE_RAW_DECL_ROUNDF
895 _GL_WARN_ON_USE (roundf, "roundf is unportable - "
896 "use gnulib module roundf for portability");
902 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
904 # define round rpl_round
906 _GL_FUNCDECL_RPL (round, double, (double x));
907 _GL_CXXALIAS_RPL (round, double, (double x));
909 # if !@HAVE_DECL_ROUND@
910 _GL_FUNCDECL_SYS (round, double, (double x));
912 _GL_CXXALIAS_SYS (round, double, (double x));
914 _GL_CXXALIASWARN (round);
915 #elif defined GNULIB_POSIXCHECK
917 # if HAVE_RAW_DECL_ROUND
918 _GL_WARN_ON_USE (round, "round is unportable - "
919 "use gnulib module round for portability");
924 # if @REPLACE_ROUNDL@
925 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
927 # define roundl rpl_roundl
929 _GL_FUNCDECL_RPL (roundl, long double, (long double x));
930 _GL_CXXALIAS_RPL (roundl, long double, (long double x));
932 # if !@HAVE_DECL_ROUNDL@
933 _GL_FUNCDECL_SYS (roundl, long double, (long double x));
935 _GL_CXXALIAS_SYS (roundl, long double, (long double x));
937 _GL_CXXALIASWARN (roundl);
938 #elif defined GNULIB_POSIXCHECK
940 # if HAVE_RAW_DECL_ROUNDL
941 _GL_WARN_ON_USE (roundl, "roundl is unportable - "
942 "use gnulib module roundl for portability");
950 _GL_FUNCDECL_SYS (sinf, float, (float x));
952 _GL_CXXALIAS_SYS (sinf, float, (float x));
953 _GL_CXXALIASWARN (sinf);
954 #elif defined GNULIB_POSIXCHECK
956 # if HAVE_RAW_DECL_SINF
957 _GL_WARN_ON_USE (sinf, "sinf is unportable - "
958 "use gnulib module sinf for portability");
963 # if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
965 _GL_FUNCDECL_SYS (sinl, long double, (long double x));
967 _GL_CXXALIAS_SYS (sinl, long double, (long double x));
968 _GL_CXXALIASWARN (sinl);
969 #elif defined GNULIB_POSIXCHECK
971 # if HAVE_RAW_DECL_SINL
972 _GL_WARN_ON_USE (sinl, "sinl is unportable - "
973 "use gnulib module mathl for portability");
981 _GL_FUNCDECL_SYS (sinhf, float, (float x));
983 _GL_CXXALIAS_SYS (sinhf, float, (float x));
984 _GL_CXXALIASWARN (sinhf);
985 #elif defined GNULIB_POSIXCHECK
987 # if HAVE_RAW_DECL_SINHF
988 _GL_WARN_ON_USE (sinhf, "sinhf is unportable - "
989 "use gnulib module sinhf for portability");
997 _GL_FUNCDECL_SYS (sqrtf, float, (float x));
999 _GL_CXXALIAS_SYS (sqrtf, float, (float x));
1000 _GL_CXXALIASWARN (sqrtf);
1001 #elif defined GNULIB_POSIXCHECK
1003 # if HAVE_RAW_DECL_SQRTF
1004 _GL_WARN_ON_USE (sqrtf, "sqrtf is unportable - "
1005 "use gnulib module sqrtf for portability");
1010 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
1012 _GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
1014 _GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
1015 _GL_CXXALIASWARN (sqrtl);
1016 #elif defined GNULIB_POSIXCHECK
1018 # if HAVE_RAW_DECL_SQRTL
1019 _GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - "
1020 "use gnulib module mathl for portability");
1028 _GL_FUNCDECL_SYS (tanf, float, (float x));
1030 _GL_CXXALIAS_SYS (tanf, float, (float x));
1031 _GL_CXXALIASWARN (tanf);
1032 #elif defined GNULIB_POSIXCHECK
1034 # if HAVE_RAW_DECL_TANF
1035 _GL_WARN_ON_USE (tanf, "tanf is unportable - "
1036 "use gnulib module tanf for portability");
1041 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
1043 _GL_FUNCDECL_SYS (tanl, long double, (long double x));
1045 _GL_CXXALIAS_SYS (tanl, long double, (long double x));
1046 _GL_CXXALIASWARN (tanl);
1047 #elif defined GNULIB_POSIXCHECK
1049 # if HAVE_RAW_DECL_TANL
1050 _GL_WARN_ON_USE (tanl, "tanl is unportable - "
1051 "use gnulib module mathl for portability");
1059 _GL_FUNCDECL_SYS (tanhf, float, (float x));
1061 _GL_CXXALIAS_SYS (tanhf, float, (float x));
1062 _GL_CXXALIASWARN (tanhf);
1063 #elif defined GNULIB_POSIXCHECK
1065 # if HAVE_RAW_DECL_TANHF
1066 _GL_WARN_ON_USE (tanhf, "tanhf is unportable - "
1067 "use gnulib module tanhf for portability");
1073 # if @REPLACE_TRUNCF@
1074 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1075 # define truncf rpl_truncf
1077 _GL_FUNCDECL_RPL (truncf, float, (float x));
1078 _GL_CXXALIAS_RPL (truncf, float, (float x));
1080 # if !@HAVE_DECL_TRUNCF@
1081 _GL_FUNCDECL_SYS (truncf, float, (float x));
1083 _GL_CXXALIAS_SYS (truncf, float, (float x));
1085 _GL_CXXALIASWARN (truncf);
1086 #elif defined GNULIB_POSIXCHECK
1088 # if HAVE_RAW_DECL_TRUNCF
1089 _GL_WARN_ON_USE (truncf, "truncf is unportable - "
1090 "use gnulib module truncf for portability");
1095 # if @REPLACE_TRUNC@
1096 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1097 # define trunc rpl_trunc
1099 _GL_FUNCDECL_RPL (trunc, double, (double x));
1100 _GL_CXXALIAS_RPL (trunc, double, (double x));
1102 # if !@HAVE_DECL_TRUNC@
1103 _GL_FUNCDECL_SYS (trunc, double, (double x));
1105 _GL_CXXALIAS_SYS (trunc, double, (double x));
1107 _GL_CXXALIASWARN (trunc);
1108 #elif defined GNULIB_POSIXCHECK
1110 # if HAVE_RAW_DECL_TRUNC
1111 _GL_WARN_ON_USE (trunc, "trunc is unportable - "
1112 "use gnulib module trunc for portability");
1117 # if @REPLACE_TRUNCL@
1118 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
1120 # define truncl rpl_truncl
1122 _GL_FUNCDECL_RPL (truncl, long double, (long double x));
1123 _GL_CXXALIAS_RPL (truncl, long double, (long double x));
1125 # if !@HAVE_DECL_TRUNCL@
1126 _GL_FUNCDECL_SYS (truncl, long double, (long double x));
1128 _GL_CXXALIAS_SYS (truncl, long double, (long double x));
1130 _GL_CXXALIASWARN (truncl);
1131 #elif defined GNULIB_POSIXCHECK
1133 # if HAVE_RAW_DECL_TRUNCL
1134 _GL_WARN_ON_USE (truncl, "truncl is unportable - "
1135 "use gnulib module truncl for portability");
1140 /* Definitions of function-like macros come here, after the function
1144 #if @GNULIB_ISFINITE@
1145 # if @REPLACE_ISFINITE@
1146 _GL_EXTERN_C int gl_isfinitef (float x);
1147 _GL_EXTERN_C int gl_isfinited (double x);
1148 _GL_EXTERN_C int gl_isfinitel (long double x);
1150 # define isfinite(x) \
1151 (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
1152 sizeof (x) == sizeof (double) ? gl_isfinited (x) : \
1157 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isfinite)
1159 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isfinite)
1162 #elif defined GNULIB_POSIXCHECK
1163 # if defined isfinite
1164 _GL_WARN_REAL_FLOATING_DECL (isfinite);
1166 # define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x)
1172 # if @REPLACE_ISINF@
1173 _GL_EXTERN_C int gl_isinff (float x);
1174 _GL_EXTERN_C int gl_isinfd (double x);
1175 _GL_EXTERN_C int gl_isinfl (long double x);
1178 (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
1179 sizeof (x) == sizeof (double) ? gl_isinfd (x) : \
1184 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isinf)
1186 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isinf)
1189 #elif defined GNULIB_POSIXCHECK
1191 _GL_WARN_REAL_FLOATING_DECL (isinf);
1193 # define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x)
1199 /* Test for NaN for 'float' numbers. */
1201 /* The original <math.h> included above provides a declaration of isnan macro
1202 or (older) isnanf function. */
1204 /* GCC 4.0 and newer provides three built-ins for isnan. */
1206 # define isnanf(x) __builtin_isnanf ((float)(x))
1207 # elif defined isnan
1209 # define isnanf(x) isnan ((float)(x))
1212 /* Test whether X is a NaN. */
1214 # define isnanf rpl_isnanf
1215 _GL_EXTERN_C int isnanf (float x);
1220 /* Test for NaN for 'double' numbers.
1221 This function is a gnulib extension, unlike isnan() which applied only
1222 to 'double' numbers earlier but now is a type-generic macro. */
1224 /* The original <math.h> included above provides a declaration of isnan
1227 /* GCC 4.0 and newer provides three built-ins for isnan. */
1229 # define isnand(x) __builtin_isnan ((double)(x))
1232 # define isnand(x) isnan ((double)(x))
1235 /* Test whether X is a NaN. */
1237 # define isnand rpl_isnand
1238 _GL_EXTERN_C int isnand (double x);
1243 /* Test for NaN for 'long double' numbers. */
1245 /* The original <math.h> included above provides a declaration of isnan
1246 macro or (older) isnanl function. */
1248 /* GCC 4.0 and newer provides three built-ins for isnan. */
1250 # define isnanl(x) __builtin_isnanl ((long double)(x))
1251 # elif defined isnan
1253 # define isnanl(x) isnan ((long double)(x))
1256 /* Test whether X is a NaN. */
1258 # define isnanl rpl_isnanl
1259 _GL_EXTERN_C int isnanl (long double x) _GL_ATTRIBUTE_CONST;
1263 /* This must come *after* the snippets for GNULIB_ISNANF and GNULIB_ISNANL! */
1265 # if @REPLACE_ISNAN@
1266 /* We can't just use the isnanf macro (e.g.) as exposed by
1267 isnanf.h (e.g.) here, because those may end up being macros
1268 that recursively expand back to isnan. So use the gnulib
1269 replacements for them directly. */
1270 # if @HAVE_ISNANF@ && __GNUC__ >= 4
1271 # define gl_isnan_f(x) __builtin_isnanf ((float)(x))
1273 _GL_EXTERN_C int rpl_isnanf (float x);
1274 # define gl_isnan_f(x) rpl_isnanf (x)
1276 # if @HAVE_ISNAND@ && __GNUC__ >= 4
1277 # define gl_isnan_d(x) __builtin_isnan ((double)(x))
1279 _GL_EXTERN_C int rpl_isnand (double x);
1280 # define gl_isnan_d(x) rpl_isnand (x)
1282 # if @HAVE_ISNANL@ && __GNUC__ >= 4
1283 # define gl_isnan_l(x) __builtin_isnanl ((long double)(x))
1285 _GL_EXTERN_C int rpl_isnanl (long double x) _GL_ATTRIBUTE_CONST;
1286 # define gl_isnan_l(x) rpl_isnanl (x)
1290 (sizeof (x) == sizeof (long double) ? gl_isnan_l (x) : \
1291 sizeof (x) == sizeof (double) ? gl_isnan_d (x) : \
1293 # elif __GNUC__ >= 4
1296 (sizeof (x) == sizeof (long double) ? __builtin_isnanl ((long double)(x)) : \
1297 sizeof (x) == sizeof (double) ? __builtin_isnan ((double)(x)) : \
1298 __builtin_isnanf ((float)(x)))
1302 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (isnan)
1304 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (isnan)
1307 /* Ensure isnan is a macro. */
1309 # define isnan isnan
1312 #elif defined GNULIB_POSIXCHECK
1314 _GL_WARN_REAL_FLOATING_DECL (isnan);
1316 # define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x)
1321 #if @GNULIB_SIGNBIT@
1322 # if @REPLACE_SIGNBIT_USING_GCC@
1324 /* GCC 4.0 and newer provides three built-ins for signbit. */
1325 # define signbit(x) \
1326 (sizeof (x) == sizeof (long double) ? __builtin_signbitl (x) : \
1327 sizeof (x) == sizeof (double) ? __builtin_signbit (x) : \
1328 __builtin_signbitf (x))
1330 # if @REPLACE_SIGNBIT@
1332 _GL_EXTERN_C int gl_signbitf (float arg);
1333 _GL_EXTERN_C int gl_signbitd (double arg);
1334 _GL_EXTERN_C int gl_signbitl (long double arg);
1335 # if __GNUC__ >= 2 && !defined __STRICT_ANSI__
1336 # define _GL_NUM_UINT_WORDS(type) \
1337 ((sizeof (type) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
1338 # if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
1339 # define gl_signbitf_OPTIMIZED_MACRO
1340 # define gl_signbitf(arg) \
1341 ({ union { float _value; \
1342 unsigned int _word[_GL_NUM_UINT_WORDS (float)]; \
1344 _m._value = (arg); \
1345 (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \
1348 # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd
1349 # define gl_signbitd_OPTIMIZED_MACRO
1350 # define gl_signbitd(arg) \
1351 ({ union { double _value; \
1352 unsigned int _word[_GL_NUM_UINT_WORDS (double)]; \
1354 _m._value = (arg); \
1355 (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \
1358 # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl
1359 # define gl_signbitl_OPTIMIZED_MACRO
1360 # define gl_signbitl(arg) \
1361 ({ union { long double _value; \
1362 unsigned int _word[_GL_NUM_UINT_WORDS (long double)]; \
1364 _m._value = (arg); \
1365 (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \
1369 # define signbit(x) \
1370 (sizeof (x) == sizeof (long double) ? gl_signbitl (x) : \
1371 sizeof (x) == sizeof (double) ? gl_signbitd (x) : \
1376 _GL_MATH_CXX_REAL_FLOATING_DECL_1 (signbit)
1378 _GL_MATH_CXX_REAL_FLOATING_DECL_2 (signbit)
1381 #elif defined GNULIB_POSIXCHECK
1382 # if defined signbit
1383 _GL_WARN_REAL_FLOATING_DECL (signbit);
1385 # define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x)
1390 #endif /* _@GUARD_PREFIX@_MATH_H */
1391 #endif /* _@GUARD_PREFIX@_MATH_H */