glibc/sysdeps/ia64/ieee754.h
Ulrich Drepper aaca11d8a1 Update.
2000-09-30 H.J. Lu  <hjl@gnu.org>

	* sysdeps/ieee754/ldbl-96/s_ceill.c (__ceill): Handle overflow.
	* sysdeps/ieee754/ldbl-96/s_floorl.c (__floorl): Likewise.

2000-09-29  H.J. Lu  <hjl@gnu.org>

	* math/libm-test.inc (init_max_error): Clear all exceptions
	before starting test.
	(acosh_test): Test for existence of function.
	(asinh_test): Likewise.
	(atan2_test): Likewise.
	(cabs_test): Likewise.
	(cacos_test): Likewise.
	(cacosh_test): Likewise.
	(casin_test): Likewise.
	(casinh_test): Likewise.
	(catan_test): Likewise.
	(catanh_test): Likewise.
	(ccos_test): Likewise.
	(ccosh_test): Likewise.
	(cexp_test): Likewise.
	(clog_test): Likewise.
	(clog10_test): Likewise.
	(cosh_test): Likewise.
	(cpow_test): Likewise.
	(csin_test): Likewise.
	(csinh_test): Likewise.
	(csqrt_test): Likewise.
	(ctan_test): Likewise.
	(ctanh_test): Likewise.
	(fmod_test): Likewise.
	(hypot_test): Likewise.
	(remainder_test): Likewise.
	(remquo_test): Likewise.
	(sincos_test): Likewise.
	(sinh_test): Likewise.
	(tanh_test): Likewise.

2000-09-29  H.J. Lu  <hjl@gnu.org>

	* sysdeps/ia64/ieee754.h: New file.

	* sysdeps/ia64/fpu/math_ldbl.h: New file.

2000-09-30  Jakub Jelinek  <jakub@redhat.com>

	* elf/ldconfig.h (FLAG_X8664_LIB64): Define.
	* sysdeps/unix/sysv/linux/i386/readelflib.c: New file.

2000-09-30  Ulrich Drepper  <drepper@redhat.com>

	* manual/charset.texi: Correct notations, reference to C90 amd 1,
	and some other details.
	* manual/ctype.texi: Likewise.
	Patches by Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>.
2000-09-30 22:03:51 +00:00

206 lines
5.0 KiB
C

/* Copyright (C) 2000 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
{
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int mantissa:23;
#endif /* Big endian. */
#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned int mantissa:23;
unsigned int exponent:8;
unsigned int negative:1;
#endif /* Little endian. */
} ieee;
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:8;
unsigned int quiet_nan:1;
unsigned int mantissa:22;
#endif /* Big endian. */
#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned int mantissa:22;
unsigned int quiet_nan:1;
unsigned int exponent:8;
unsigned int negative:1;
#endif /* Little endian. */
} ieee_nan;
};
#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
union ieee754_double
{
double d;
/* This is the IEEE 754 double-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
/* Together these comprise the mantissa. */
unsigned int mantissa0:20;
unsigned int mantissa1:32;
#endif /* Big endian. */
#if __BYTE_ORDER == __LITTLE_ENDIAN
# if __FLOAT_WORD_ORDER == BIG_ENDIAN
unsigned int mantissa0:20;
unsigned int exponent:11;
unsigned int negative:1;
unsigned int mantissa1:32;
# else
/* Together these comprise the mantissa. */
unsigned int mantissa1:32;
unsigned int mantissa0:20;
unsigned int exponent:11;
unsigned int negative:1;
# endif
#endif /* Little endian. */
} ieee;
/* This format makes it easier to see if a NaN is a signalling NaN. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned int negative:1;
unsigned int exponent:11;
unsigned int quiet_nan:1;
/* Together these comprise the mantissa. */
unsigned int mantissa0:19;
unsigned int mantissa1:32;
#else
# if __FLOAT_WORD_ORDER == BIG_ENDIAN
unsigned int mantissa0:19;
unsigned int quiet_nan:1;
unsigned int exponent:11;
unsigned int negative:1;
unsigned int mantissa1:32;
# else
/* Together these comprise the mantissa. */
unsigned int mantissa1:32;
unsigned int mantissa0:19;
unsigned int quiet_nan:1;
unsigned int exponent:11;
unsigned int negative:1;
# endif
#endif
} ieee_nan;
};
#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
union ieee854_long_double
{
long double d;
/* This is the IEEE 854 double-extended-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned int empty0:32;
unsigned int negative:1;
unsigned int exponent:15;
unsigned int empty1:16;
unsigned int mantissa0:32;
unsigned int mantissa1:32;
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
# if __FLOAT_WORD_ORDER == BIG_ENDIAN
unsigned int empty0:32;
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty1:16;
unsigned int mantissa0:32;
unsigned int mantissa1:32;
# else
unsigned int mantissa1:32;
unsigned int mantissa0:32;
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty1:16;
unsigned int empty0:32;
# endif
#endif
} ieee;
/* This is for NaNs in the IEEE 854 double-extended-precision format. */
struct
{
#if __BYTE_ORDER == __BIG_ENDIAN
unsigned int empty0:32;
unsigned int negative:1;
unsigned int exponent:15;
unsigned int empty1:16;
unsigned int one:1;
unsigned int quiet_nan:1;
unsigned int mantissa0:30;
unsigned int mantissa1:32;
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
# if __FLOAT_WORD_ORDER == BIG_ENDIAN
unsigned int empty0:32;
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty1:16;
unsigned int mantissa0:30;
unsigned int quiet_nan:1;
unsigned int one:1;
unsigned int mantissa1:32;
# else
unsigned int mantissa1:32;
unsigned int mantissa0:30;
unsigned int quiet_nan:1;
unsigned int one:1;
unsigned int exponent:15;
unsigned int negative:1;
unsigned int empty1:16;
unsigned int empty0:32;
# endif
#endif
} ieee_nan;
};
#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
__END_DECLS
#endif /* ieee754.h */