mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
ff80ec4283
The classification macros: finite, fpclassify, iseqsig, isinf, isnan, issignaling, and signbit are defined by ISO C11 and declared in mathcalls.h for each of the floating-point types: float, double, and long double. TS 18661-3 does not mention these macros for float128, however support for them must be present when _Float128 is present. This is true, even when the feature test macro __STDC_WANT_IEC_60559_TYPES_EXT__ is false. Other function declarations in mathcalls.h, on the other hand, depend on __STDC_WANT_IEC_60559_TYPES_EXT__. This patch splits the helper functions (__finite, __fpclassify, __iseqsig, __isinf, __isnan, __issignaling, and __signbit) from mathcalls.h, so that these helper functions can be declared for _Float128, even when __STDC_WANT_IEC_60559_TYPES_EXT__ is false. Tested for powerpc64le, s390x, and x86_64. * include/bits/mathcalls-helper-functions.h: New file. * math/Makefile (headers): Add bits/mathcalls-helper-functions.h. * math/bits/mathcalls.h (__finite, __fpclassify, __iseqsig) (__isinf, __isnan, __issignaling, __signbit): Move declarations to math/bits/mathcalls-helper-functions.h. * math/bits/mathcalls-helper-functions.h: New file. * math/math.h: Include bits/mathcalls-helper-functions.h for float, double, and long double.
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/* Prototype declarations for math classification macros helpers.
|
|
Copyright (C) 2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
/* Classify given number. */
|
|
__MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value))
|
|
__attribute__ ((__const__));
|
|
|
|
/* Test for negative number. */
|
|
__MATHDECL_1 (int, __signbit,, (_Mdouble_ __value))
|
|
__attribute__ ((__const__));
|
|
|
|
/* Return 0 if VALUE is finite or NaN, +1 if it
|
|
is +Infinity, -1 if it is -Infinity. */
|
|
__MATHDECL_1 (int, __isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
|
|
|
|
/* Return nonzero if VALUE is finite and not NaN. Used by isfinite macro. */
|
|
__MATHDECL_1 (int, __finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
|
|
|
|
/* Return nonzero if VALUE is not a number. */
|
|
__MATHDECL_1 (int, __isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
|
|
|
|
/* Test equality. */
|
|
__MATHDECL_1 (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y));
|
|
|
|
/* Test for signaling NaN. */
|
|
__MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value))
|
|
__attribute__ ((__const__));
|