math/bits/mathcalls-helper-functions.h

   1 /* Prototype declarations for math classification macros helpers.
   2    Copyright (C) 2017-2023 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    <https://www.gnu.org/licenses/>.  */
  18
  19 /* Classify given number.  */
  20 __MATHDECL_ALIAS (int, __fpclassify,, (_Mdouble_ __value), fpclassify)
  21      __attribute__ ((__const__));
  22
  23 /* Test for negative number.  */
  24 __MATHDECL_ALIAS (int, __signbit,, (_Mdouble_ __value), signbit)
  25      __attribute__ ((__const__));
  26
  27 /* Return 0 if VALUE is finite or NaN, +1 if it
  28    is +Infinity, -1 if it is -Infinity.  */
  29 __MATHDECL_ALIAS (int, __isinf,, (_Mdouble_ __value), isinf)
  30   __attribute__ ((__const__));
  31
  32 /* Return nonzero if VALUE is finite and not NaN.  Used by isfinite macro.  */
  33 __MATHDECL_ALIAS (int, __finite,, (_Mdouble_ __value), finite)
  34   __attribute__ ((__const__));
  35
  36 /* Return nonzero if VALUE is not a number.  */
  37 __MATHDECL_ALIAS (int, __isnan,, (_Mdouble_ __value), isnan)
  38   __attribute__ ((__const__));
  39
  40 /* Test equality.  */
  41 __MATHDECL_ALIAS (int, __iseqsig,, (_Mdouble_ __x, _Mdouble_ __y), iseqsig);
  42
  43 /* Test for signaling NaN.  */
  44 __MATHDECL_ALIAS (int, __issignaling,, (_Mdouble_ __value), issignaling)
  45      __attribute__ ((__const__));