aaca11d8a1
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>.
206 lines
5 KiB
C
206 lines
5 KiB
C
/* Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _IEEE754_H
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#define _IEEE754_H 1
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#include <features.h>
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#include <endian.h>
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__BEGIN_DECLS
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union ieee754_float
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{
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float f;
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/* This is the IEEE 754 single-precision format. */
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struct
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned int negative:1;
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unsigned int exponent:8;
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unsigned int mantissa:23;
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#endif /* Big endian. */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned int mantissa:23;
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unsigned int exponent:8;
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unsigned int negative:1;
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#endif /* Little endian. */
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} ieee;
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/* This format makes it easier to see if a NaN is a signalling NaN. */
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struct
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned int negative:1;
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unsigned int exponent:8;
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unsigned int quiet_nan:1;
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unsigned int mantissa:22;
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#endif /* Big endian. */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned int mantissa:22;
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unsigned int quiet_nan:1;
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unsigned int exponent:8;
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unsigned int negative:1;
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#endif /* Little endian. */
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} ieee_nan;
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};
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#define IEEE754_FLOAT_BIAS 0x7f /* Added to exponent. */
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union ieee754_double
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{
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double d;
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/* This is the IEEE 754 double-precision format. */
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struct
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned int negative:1;
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unsigned int exponent:11;
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/* Together these comprise the mantissa. */
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unsigned int mantissa0:20;
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unsigned int mantissa1:32;
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#endif /* Big endian. */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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# if __FLOAT_WORD_ORDER == BIG_ENDIAN
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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# else
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/* Together these comprise the mantissa. */
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unsigned int mantissa1:32;
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unsigned int mantissa0:20;
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unsigned int exponent:11;
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unsigned int negative:1;
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# endif
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#endif /* Little endian. */
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} ieee;
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/* This format makes it easier to see if a NaN is a signalling NaN. */
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struct
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned int negative:1;
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unsigned int exponent:11;
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unsigned int quiet_nan:1;
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/* Together these comprise the mantissa. */
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unsigned int mantissa0:19;
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unsigned int mantissa1:32;
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#else
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# if __FLOAT_WORD_ORDER == BIG_ENDIAN
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unsigned int mantissa0:19;
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unsigned int quiet_nan:1;
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unsigned int exponent:11;
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unsigned int negative:1;
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unsigned int mantissa1:32;
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# else
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/* Together these comprise the mantissa. */
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unsigned int mantissa1:32;
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unsigned int mantissa0:19;
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unsigned int quiet_nan:1;
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unsigned int exponent:11;
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unsigned int negative:1;
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# endif
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#endif
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} ieee_nan;
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};
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#define IEEE754_DOUBLE_BIAS 0x3ff /* Added to exponent. */
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union ieee854_long_double
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{
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long double d;
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/* This is the IEEE 854 double-extended-precision format. */
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struct
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned int empty0:32;
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unsigned int negative:1;
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unsigned int exponent:15;
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unsigned int empty1:16;
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unsigned int mantissa0:32;
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unsigned int mantissa1:32;
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#endif
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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# if __FLOAT_WORD_ORDER == BIG_ENDIAN
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unsigned int empty0:32;
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty1:16;
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unsigned int mantissa0:32;
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unsigned int mantissa1:32;
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# else
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unsigned int mantissa1:32;
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unsigned int mantissa0:32;
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty1:16;
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unsigned int empty0:32;
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# endif
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#endif
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} ieee;
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/* This is for NaNs in the IEEE 854 double-extended-precision format. */
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struct
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{
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned int empty0:32;
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unsigned int negative:1;
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unsigned int exponent:15;
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unsigned int empty1:16;
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unsigned int one:1;
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unsigned int quiet_nan:1;
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unsigned int mantissa0:30;
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unsigned int mantissa1:32;
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#endif
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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# if __FLOAT_WORD_ORDER == BIG_ENDIAN
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unsigned int empty0:32;
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty1:16;
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unsigned int mantissa0:30;
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unsigned int quiet_nan:1;
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unsigned int one:1;
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unsigned int mantissa1:32;
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# else
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unsigned int mantissa1:32;
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unsigned int mantissa0:30;
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unsigned int quiet_nan:1;
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unsigned int one:1;
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty1:16;
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unsigned int empty0:32;
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# endif
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#endif
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} ieee_nan;
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};
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#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
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__END_DECLS
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#endif /* ieee754.h */
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