glibc/math/bits/mathcalls-helper-functions.h

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/* 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__));