diff options
Diffstat (limited to 'sysdeps/i386/isnanl.c')
-rw-r--r-- | sysdeps/i386/isnanl.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/sysdeps/i386/isnanl.c b/sysdeps/i386/isnanl.c deleted file mode 100644 index de10c07..0000000 --- a/sysdeps/i386/isnanl.c +++ /dev/null @@ -1,43 +0,0 @@ -/* Check `long double' for Not A Number. i386 FPU version. -Copyright (C) 1991, 1992, 1995 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 Library General Public License as -published by the Free Software Foundation; either version 2 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 -Library General Public License for more details. - -You should have received a copy of the GNU Library General Public -License along with the GNU C Library; see the file COPYING.LIB. If -not, write to the Free Software Foundation, Inc., 675 Mass Ave, -Cambridge, MA 02139, USA. */ - -#include <math.h> -#include "ieee754.h" - -#undef __isnanl -#undef isnanl - - -/* Return nonzero if VALUE is not a number. */ -int -__isnanl (long double value) -{ - union ieee854_long_double u; - - u.d = value; - - /* Intel's interpretation of the IEEE 854 standard defines NaN to - have the maximum possible exponent and the MSB and at least one - more bit of the mantissa set. */ - return ((u.ieee.exponent & 0x7fff) == 0x7fff - && ((u.ieee.mantissa0 & 0x80000000) != 0) - && ((u.ieee.mantissa0 & 0x7fffffff) != 0 || u.ieee.mantissa1 != 0)); -} - -weak_alias (__isnanl, isnanl); |