text: /* Prototype declarations for math classification macros helpers.
     Copyright (C) 2017-2019 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__));