lib/float.c

   1 /* Auxiliary definitions for <float.h>.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2011.
   4
   5    This file is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU Lesser General Public License as
   7    published by the Free Software Foundation; either version 2.1 of the
   8    License, or (at your option) any later version.
   9
  10    This file 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
  13    GNU Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 /* Specification.  */
  21 #include <float.h>
  22
  23 #if (defined _ARCH_PPC || defined _POWER) && (defined _AIX || defined __linux__) && (LDBL_MANT_DIG == 106) && defined __GNUC__
  24 const union gl_long_double_union gl_LDBL_MAX =
  25   { { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL } };
  26 #elif defined __i386__
  27 const union gl_long_double_union gl_LDBL_MAX =
  28   { { 0xFFFFFFFF, 0xFFFFFFFF, 32766 } };
  29 #else
  30 /* This declaration is solely to ensure that after preprocessing
  31    this file is never empty.  */
  32 typedef int dummy;
  33 #endif