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-rw-r--r--sysdeps/arm/fpu/ieee754.h115
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diff --git a/sysdeps/arm/fpu/ieee754.h b/sysdeps/arm/fpu/ieee754.h
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-/* Copyright (C) 1992, 1995, 1996, 1998 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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#ifndef _IEEE754_H
-
-#define _IEEE754_H 1
-#include <features.h>
-
-#include <endian.h>
-
-__BEGIN_DECLS
-
-union ieee754_float
- {
- float f;
-
- /* This is the IEEE 754 single-precision format. */
- struct
- {
- unsigned int mantissa:23;
- unsigned int exponent:8;
- unsigned int negative:1;
- } ieee;
-
- /* This format makes it easier to see if a NaN is a signalling NaN. */
- struct
- {
- unsigned int mantissa:22;
- unsigned int quiet_nan:1;
- unsigned int exponent:8;
- unsigned int negative:1;
- } ieee_nan;
- };
-
-#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
-
-
-union ieee754_double
- {
- double d;
-
- /* This is the IEEE 754 double-precision format. */
- struct
- {
- unsigned int mantissa0:20;
- unsigned int exponent:11;
- unsigned int negative:1;
- unsigned int mantissa1:32;
- } ieee;
-
- /* This format makes it easier to see if a NaN is a signalling NaN. */
- struct
- {
- unsigned int mantissa0:19;
- unsigned int quiet_nan:1;
- unsigned int exponent:11;
- unsigned int negative:1;
- unsigned int mantissa1:32;
- } ieee_nan;
- };
-
-#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
-
-
-/* The following two structures are correct for `new' floating point systems but
- wrong for the old FPPC. The only solution seems to be to avoid their use on
- old hardware. */
-
-union ieee854_long_double
- {
- long double d;
-
- /* This is the IEEE 854 double-extended-precision format. */
- struct
- {
- unsigned int exponent:15;
- unsigned int empty:16;
- unsigned int negative:1;
- unsigned int mantissa1:32;
- unsigned int mantissa0:32;
- } ieee;
-
- /* This is for NaNs in the IEEE 854 double-extended-precision format. */
- struct
- {
- unsigned int exponent:15;
- unsigned int empty:16;
- unsigned int negative:1;
- unsigned int mantissa1:32;
- unsigned int mantissa0:30;
- unsigned int quiet_nan:1;
- unsigned int one:1;
- } ieee_nan;
- };
-
-#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
-
-__END_DECLS
-
-#endif /* ieee754.h */