kc3-lang/gnulib/lib/isnand-nolibm.h

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• Hash : 7b089321
  Author :
  Date : 2025-01-01T09:24:36
  

  maint: run 'make update-copyright'
  

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• lib/isnand-nolibm.h

• /* Test for NaN that does not need libm.
     Copyright (C) 2007-2025 Free Software Foundation, Inc.
  
     This file 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.
  
     This file 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 this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* This file uses HAVE_ISNAND_IN_LIBC.  */
  #if !_GL_CONFIG_H_INCLUDED
   #error "Please include config.h first."
  #endif
  
  #if HAVE_ISNAND_IN_LIBC
  /* Get declaration of isnan macro.  */
  # include <math.h>
  # if (__GNUC__ >= 4) || (__clang_major__ >= 4)
     /* GCC >= 4.0 and clang provide a type-generic built-in for isnan.  */
  #  undef isnand
  #  define isnand(x) __builtin_isnan ((double)(x))
  # else
  #  undef isnand
  #  define isnand(x) isnan ((double)(x))
  # endif
  #else
  /* Test whether X is a NaN.  */
  # undef isnand
  # define isnand rpl_isnand
  extern
  # ifdef __cplusplus
  "C"
  # endif
  int isnand (double x);
  #endif
  
  /* Tell <math.h> that our isnand does not need libm.  */
  #define HAVE_ISNAND_NOLIBM 1
  

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