112 lines
4.1 KiB
C
112 lines
4.1 KiB
C
/* $NetBSD: float_ieee754.h,v 1.8 2005/12/11 12:25:20 christos Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)float.h 8.1 (Berkeley) 6/10/93
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*/
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/*
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* NOTICE: This is not a standalone file. To use it, #include it in
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* your port's float.h header.
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*/
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#ifndef _SYS_FLOAT_IEEE754_H_
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#define _SYS_FLOAT_IEEE754_H_
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#include <sys/cdefs.h>
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#include <sys/featuretest.h>
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#ifndef FLT_ROUNDS
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__BEGIN_DECLS
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extern int __flt_rounds(void);
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__END_DECLS
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#define FLT_ROUNDS __flt_rounds()
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#endif
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
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!defined(_XOPEN_SOURCE) || \
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((__STDC_VERSION__ - 0) >= 199901L) || \
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((_POSIX_C_SOURCE - 0) >= 200112L) || \
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((_XOPEN_SOURCE - 0) >= 600) || \
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defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
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#ifndef FLT_EVAL_METHOD
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#if __GNUC_PREREQ__(3, 3)
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
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#endif /* GCC >= 3.3 */
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#endif /* defined(FLT_EVAL_METHOD) */
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#endif /* !defined(_ANSI_SOURCE) && ... */
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#define FLT_RADIX 2 /* b */
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#define FLT_MANT_DIG 24 /* p */
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#define FLT_EPSILON 1.19209290E-7F /* b**(1-p) */
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#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
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#define FLT_MIN_EXP (-125) /* emin */
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#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
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#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
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#define FLT_MAX_EXP 128 /* emax */
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#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
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#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
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#define DBL_MANT_DIG 53
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#define DBL_EPSILON 2.2204460492503131E-16
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#define DBL_DIG 15
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#define DBL_MIN_EXP (-1021)
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#define DBL_MIN 2.2250738585072014E-308
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#define DBL_MIN_10_EXP (-307)
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#define DBL_MAX_EXP 1024
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#define DBL_MAX 1.7976931348623157E+308
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#define DBL_MAX_10_EXP 308
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/*
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* If no extended-precision type is defined by the machine-dependent
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* header including this, default to `long double' being double-precision.
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*/
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#ifndef LDBL_MANT_DIG
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#define LDBL_MANT_DIG DBL_MANT_DIG
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#define LDBL_EPSILON DBL_EPSILON
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#define LDBL_DIG DBL_DIG
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#define LDBL_MIN_EXP DBL_MIN_EXP
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#define LDBL_MIN DBL_MIN
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#define LDBL_MIN_10_EXP DBL_MIN_10_EXP
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#define LDBL_MAX_EXP DBL_MAX_EXP
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#define LDBL_MAX DBL_MAX
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#define LDBL_MAX_10_EXP DBL_MAX_10_EXP
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#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
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!defined(_XOPEN_SOURCE) || \
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((__STDC_VERSION__ - 0) >= 199901L) || \
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((_POSIX_C_SOURCE - 0) >= 200112L) || \
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((_XOPEN_SOURCE - 0) >= 600) || \
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defined(_ISOC99_SOURCE) || defined(_NETBSD_SOURCE)
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#define DECIMAL_DIG 17 /* ceil((1+p*log10(b))-(b==10) */
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#endif /* !defined(_ANSI_SOURCE) && ... */
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#endif /* LDBL_MANT_DIG */
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#endif /* _SYS_FLOAT_IEEE754_H_ */
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