math/bits/mathcalls-helper-functions.h

   1 /* Prototype declarations for math classification macros helpers.
   2    Copyright (C) 2017-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19
  20 /* Classify given number.  */
  21 __MATHDECL_1 (int, __fpclassify,, (_Mdouble_ __value))
  22      __attribute__ ((__const__));
  23
  24 /* Test for negative number.  */
  25 __MATHDECL_1 (int, __signbit,, (_Mdouble_ __value))
  26      __attribute__ ((__const__));
  27
  28 /* Return 0 if VALUE is finite or NaN, +1 if it
  29    is +Infinity, -1 if it is -Infinity.  */
  30 __MATHDECL_1 (int, __isinf,, (_Mdouble_ __value)) __attribute__ ((__const__));
  31
  32 /* Return nonzero if VALUE is finite and not NaN.  Used by isfinite macro.  */
  33 __MATHDECL_1 (int, __finite,, (_Mdouble_ __value)) __attribute__ ((__const__));
  34
  35 /* Return nonzero if VALUE is not a number.  */
  36 __MATHDECL_1 (int, __isnan,, (_Mdouble_ __value)) __attribute__ ((__const__));
  37
  38 /* Test equality.  */
  39 __MATHDECL_1 (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y));
  40
  41 /* Test for signaling NaN.  */
  42 __MATHDECL_1 (int, __issignaling,, (_Mdouble_ __value))
  43      __attribute__ ((__const__));