1999-08-09 13:35:13 +08:00
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/* Copyright (C) 1992, 1995, 1996, 1999 Free Software Foundation, Inc.
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1996-12-20 09:39:50 +08:00
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This file is part of the GNU C Library.
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1995-02-18 09:27:10 +08:00
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1996-12-20 09:39:50 +08:00
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 12:58:11 +08:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1995-02-18 09:27:10 +08:00
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1996-12-20 09:39:50 +08:00
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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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2001-07-06 12:58:11 +08:00
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Lesser General Public License for more details.
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1995-02-18 09:27:10 +08:00
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2001-07-06 12:58:11 +08:00
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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1995-02-18 09:27:10 +08:00
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1997-01-01 23:28:18 +08:00
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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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1995-02-18 09:27:10 +08:00
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#include <endian.h>
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1997-01-01 23:28:18 +08:00
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__BEGIN_DECLS
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1995-02-18 09:27:10 +08:00
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union ieee754_float
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{
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float f;
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1996-01-18 06:33:48 +08:00
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1995-02-18 09:27:10 +08:00
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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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1996-01-18 06:33:48 +08:00
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1995-02-18 09:27:10 +08:00
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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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1999-08-09 13:35:13 +08:00
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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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1995-02-18 09:27:10 +08:00
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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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1999-08-09 13:35:13 +08:00
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# endif
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1995-02-18 09:27:10 +08:00
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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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1996-12-20 09:39:50 +08:00
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/* Together these comprise the mantissa. */
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1995-02-18 09:27:10 +08:00
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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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1999-08-09 13:35:13 +08:00
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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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1996-12-20 09:39:50 +08:00
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/* Together these comprise the mantissa. */
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1995-02-18 09:27:10 +08:00
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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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1999-08-09 13:35:13 +08:00
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# endif
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1995-02-18 09:27:10 +08:00
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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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1996-01-18 06:33:48 +08:00
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1995-02-18 09:27:10 +08:00
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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 negative:1;
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unsigned int exponent:15;
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unsigned int empty: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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1999-08-09 13:35:13 +08:00
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# if __FLOAT_WORD_ORDER == BIG_ENDIAN
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty: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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1995-02-18 09:27:10 +08:00
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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 empty:16;
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1999-08-09 13:35:13 +08:00
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# endif
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1995-02-18 09:27:10 +08:00
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#endif
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} ieee;
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1996-01-18 06:33:48 +08:00
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1995-02-18 09:27:10 +08:00
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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 negative:1;
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unsigned int exponent:15;
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unsigned int empty:16;
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* misc/efgcvt_r.c (ecvt_r): Handle negative values.
* stdlib/stdlib.h: Replace __CONSTVALUE by attribute.
* stdlib/abs.c, stdlib/div.c, stdlib/labs.c, stdlib/ldiv.c,
sysdeps/generic/hypot.c: Remove obsolete __CONSTVALUE.
* stdio-common/printf_fp.c (__printf_fp): Fix parameter
declaration.
* sysdeps/generic/putenv.c (putenv): Fix second argument of
setenv.
* sysdeps/ieee754/hypot.c: New file, extracted out of cabs.c.
* sysdeps/ieee754/cabs.c: Don't define hypot here.
* sysdeps/ieee754/ieee754.h (union ieee854_long_double): Fix
definition of ieee_nan alternative.
* sysdeps/m68k/__longjmp.c, sysdeps/m68k/setjmp.c: Add register
prefix spec.
* sysdeps/m68k/ffs.c (ffs): Fix register constraint.
* sysdeps/m68k/fpu/__math.h: Include <errno.h>. Replace obsolete
__CONSTVALUE by attribute.
(floor): Round to negative infinity.
(rint, expm1) [__NO_MATH_INLINES]: Don't define, to avoid type
clash when compiling source.
(pow): Handle x == 0 and x < 0.
(ceil, __isinf, __isnan): Fix register constraints.
(__isinfl, __isnanl): Added.
* sysdeps/m68k/fpu/acos.c, sysdeps/m68k/fpu/atan2.c,
sysdeps/m68k/fpu/fmod.c, sysdeps/m68k/fpu/ldexp.c,
sysdeps/m68k/fpu/pow.c: Remove obsolete __CONSTVALUE.
* sysdeps/m68k/bsd-_setjmp.S, sysdeps/m68k/bsd-setjmp.S: Fix
assembler syntax.
* sysdeps/unix/bsd/bsd4.4/fchdir.S (fchdir): Take only one
argument.
* sysdeps/unix/bsd/clock.c (timeval_to_clock_t): Fix timeval to
clock_t conversion.
(clock): Don't multiply by CLOCKS_PER_SEC.
* sysdeps/unix/bsd/poll.c (poll): Fix msec to timeval conversion.
* sysdeps/unix/bsd/sun/m68k/brk.S (brk): Compare with address of
__end.
* sysdeps/unix/bsd/sun/m68k/vfork.S: Fix assembler syntax.
* sysdeps/unix/bsd/ualarm.c (ualarm): Fix timeval calculation.
* sysdeps/unix/bsd/vax/vfork.S: Remove duplicate label.
1996-01-17 10:03:00 +08:00
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unsigned int one:1;
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1995-02-18 09:27:10 +08:00
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unsigned int quiet_nan:1;
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* misc/efgcvt_r.c (ecvt_r): Handle negative values.
* stdlib/stdlib.h: Replace __CONSTVALUE by attribute.
* stdlib/abs.c, stdlib/div.c, stdlib/labs.c, stdlib/ldiv.c,
sysdeps/generic/hypot.c: Remove obsolete __CONSTVALUE.
* stdio-common/printf_fp.c (__printf_fp): Fix parameter
declaration.
* sysdeps/generic/putenv.c (putenv): Fix second argument of
setenv.
* sysdeps/ieee754/hypot.c: New file, extracted out of cabs.c.
* sysdeps/ieee754/cabs.c: Don't define hypot here.
* sysdeps/ieee754/ieee754.h (union ieee854_long_double): Fix
definition of ieee_nan alternative.
* sysdeps/m68k/__longjmp.c, sysdeps/m68k/setjmp.c: Add register
prefix spec.
* sysdeps/m68k/ffs.c (ffs): Fix register constraint.
* sysdeps/m68k/fpu/__math.h: Include <errno.h>. Replace obsolete
__CONSTVALUE by attribute.
(floor): Round to negative infinity.
(rint, expm1) [__NO_MATH_INLINES]: Don't define, to avoid type
clash when compiling source.
(pow): Handle x == 0 and x < 0.
(ceil, __isinf, __isnan): Fix register constraints.
(__isinfl, __isnanl): Added.
* sysdeps/m68k/fpu/acos.c, sysdeps/m68k/fpu/atan2.c,
sysdeps/m68k/fpu/fmod.c, sysdeps/m68k/fpu/ldexp.c,
sysdeps/m68k/fpu/pow.c: Remove obsolete __CONSTVALUE.
* sysdeps/m68k/bsd-_setjmp.S, sysdeps/m68k/bsd-setjmp.S: Fix
assembler syntax.
* sysdeps/unix/bsd/bsd4.4/fchdir.S (fchdir): Take only one
argument.
* sysdeps/unix/bsd/clock.c (timeval_to_clock_t): Fix timeval to
clock_t conversion.
(clock): Don't multiply by CLOCKS_PER_SEC.
* sysdeps/unix/bsd/poll.c (poll): Fix msec to timeval conversion.
* sysdeps/unix/bsd/sun/m68k/brk.S (brk): Compare with address of
__end.
* sysdeps/unix/bsd/sun/m68k/vfork.S: Fix assembler syntax.
* sysdeps/unix/bsd/ualarm.c (ualarm): Fix timeval calculation.
* sysdeps/unix/bsd/vax/vfork.S: Remove duplicate label.
1996-01-17 10:03:00 +08:00
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unsigned int mantissa0:30;
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1995-02-18 09:27:10 +08:00
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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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1999-08-09 13:35:13 +08:00
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# if __FLOAT_WORD_ORDER == BIG_ENDIAN
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty: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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1995-02-18 09:27:10 +08:00
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unsigned int mantissa1:32;
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* misc/efgcvt_r.c (ecvt_r): Handle negative values.
* stdlib/stdlib.h: Replace __CONSTVALUE by attribute.
* stdlib/abs.c, stdlib/div.c, stdlib/labs.c, stdlib/ldiv.c,
sysdeps/generic/hypot.c: Remove obsolete __CONSTVALUE.
* stdio-common/printf_fp.c (__printf_fp): Fix parameter
declaration.
* sysdeps/generic/putenv.c (putenv): Fix second argument of
setenv.
* sysdeps/ieee754/hypot.c: New file, extracted out of cabs.c.
* sysdeps/ieee754/cabs.c: Don't define hypot here.
* sysdeps/ieee754/ieee754.h (union ieee854_long_double): Fix
definition of ieee_nan alternative.
* sysdeps/m68k/__longjmp.c, sysdeps/m68k/setjmp.c: Add register
prefix spec.
* sysdeps/m68k/ffs.c (ffs): Fix register constraint.
* sysdeps/m68k/fpu/__math.h: Include <errno.h>. Replace obsolete
__CONSTVALUE by attribute.
(floor): Round to negative infinity.
(rint, expm1) [__NO_MATH_INLINES]: Don't define, to avoid type
clash when compiling source.
(pow): Handle x == 0 and x < 0.
(ceil, __isinf, __isnan): Fix register constraints.
(__isinfl, __isnanl): Added.
* sysdeps/m68k/fpu/acos.c, sysdeps/m68k/fpu/atan2.c,
sysdeps/m68k/fpu/fmod.c, sysdeps/m68k/fpu/ldexp.c,
sysdeps/m68k/fpu/pow.c: Remove obsolete __CONSTVALUE.
* sysdeps/m68k/bsd-_setjmp.S, sysdeps/m68k/bsd-setjmp.S: Fix
assembler syntax.
* sysdeps/unix/bsd/bsd4.4/fchdir.S (fchdir): Take only one
argument.
* sysdeps/unix/bsd/clock.c (timeval_to_clock_t): Fix timeval to
clock_t conversion.
(clock): Don't multiply by CLOCKS_PER_SEC.
* sysdeps/unix/bsd/poll.c (poll): Fix msec to timeval conversion.
* sysdeps/unix/bsd/sun/m68k/brk.S (brk): Compare with address of
__end.
* sysdeps/unix/bsd/sun/m68k/vfork.S: Fix assembler syntax.
* sysdeps/unix/bsd/ualarm.c (ualarm): Fix timeval calculation.
* sysdeps/unix/bsd/vax/vfork.S: Remove duplicate label.
1996-01-17 10:03:00 +08:00
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unsigned int mantissa0:30;
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1995-02-18 09:27:10 +08:00
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unsigned int quiet_nan:1;
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1996-01-18 06:33:48 +08:00
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unsigned int one:1;
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1995-02-18 09:27:10 +08:00
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unsigned int exponent:15;
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unsigned int negative:1;
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unsigned int empty:16;
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1999-08-09 13:35:13 +08:00
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# endif
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1995-02-18 09:27:10 +08:00
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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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1997-01-01 23:28:18 +08:00
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__END_DECLS
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#endif /* ieee754.h */
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