fenv_const.c

来自「Glibc 2.3.2源代码(解压后有100多M)」· C语言 代码 · 共 36 行

/* Constants for fenv_bits.h (soft float edition).
   Copyright (C) 2002 Free Software Foundation, Inc.
   Contributed by Aldy Hernandez <[e-mail]>, 2002.
   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/* We want to specify the bit pattern of the __fe_*_env constants, so 
   pretend they're really `long long' instead of `double'.  */

/* If the default argument is used we use this value.  Disable all
   signalling exceptions as default.  */
const unsigned long long __fe_dfl_env __attribute__ ((aligned (8))) = 
0x000000003e000000ULL;

/* Floating-point environment where none of the exceptions are masked.  */
const unsigned long long __fe_enabled_env __attribute__ ((aligned (8))) = 
0xfff80000000000f8ULL;

/* Floating-point environment with the NI bit set.  */
const unsigned long long __fe_nonieee_env __attribute__ ((aligned (8))) = 
0xfff8000000000004ULL;