kc3-lang/gnulib/tests/minus-zero.h

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• tests/minus-zero.h

• /* Macros for floating-point negative zero.
     Copyright (C) 2010-2023 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
  
     This program 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 General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Keep in sync with m4/minus-zero.m4!  */
  
  #include <float.h>
  
  
  /* minus_zerof represents the value -0.0f.  */
  
  /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
     ICC 10.0 has a bug when optimizing the expression -zero.
     The expression -FLT_MIN * FLT_MIN does not work when cross-compiling
     to PowerPC on Mac OS X 10.5.  */
  #if defined __hpux || defined __sgi || defined __ICC
  static float
  compute_minus_zerof (void)
  {
    return -FLT_MIN * FLT_MIN;
  }
  # define minus_zerof compute_minus_zerof ()
  #else
  float minus_zerof = -0.0f;
  #endif
  
  
  /* minus_zerod represents the value -0.0.  */
  
  /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
     ICC 10.0 has a bug when optimizing the expression -zero.
     The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
     to PowerPC on Mac OS X 10.5.  */
  #if defined __hpux || defined __sgi || defined __ICC
  static double
  compute_minus_zerod (void)
  {
    return -DBL_MIN * DBL_MIN;
  }
  # define minus_zerod compute_minus_zerod ()
  #else
  double minus_zerod = -0.0;
  #endif
  
  
  /* minus_zerol represents the value -0.0L.  */
  
  /* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0L.
     IRIX cc can't put -0.0L into .data, but can compute at runtime.
     ICC 10.0 has a bug when optimizing the expression -zero.
     The expression -LDBL_MIN * LDBL_MIN does not work when cross-compiling
     to PowerPC on Mac OS X 10.5.  */
  #if defined __hpux || defined __sgi || defined __ICC
  static long double
  compute_minus_zerol (void)
  {
    return -LDBL_MIN * LDBL_MIN;
  }
  # define minus_zerol compute_minus_zerol ()
  #else
  long double minus_zerol = -0.0L;
  #endif
  

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