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