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/* $NetBSD: float_ieee754.h,v 1.11 2013/06/18 20:17:19 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>
/*
* feature macro to test for IEEE754
*/
#define _FLOAT_IEEE754 1
#if !defined(__ASSEMBLER__) && !defined(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) && ... */
#if __GNUC_PREREQ__(3, 3)
/*
* GCC 3,3 and later provide builtins for the FLT, DBL, and LDBL constants.
*/
#define FLT_RADIX __FLT_RADIX__
#define FLT_MANT_DIG __FLT_MANT_DIG__
#define FLT_EPSILON __FLT_EPSILON__
#define FLT_DIG __FLT_DIG__
#define FLT_MIN_EXP __FLT_MIN_EXP__
#define FLT_MIN __FLT_MIN__
#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
#define FLT_MAX_EXP __FLT_MAX_EXP__
#define FLT_MAX __FLT_MAX__
#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
#define DBL_MANT_DIG __DBL_MANT_DIG__
#define DBL_EPSILON __DBL_EPSILON__
#define DBL_DIG __DBL_DIG__
#define DBL_MIN_EXP __DBL_MIN_EXP__
#define DBL_MIN __DBL_MIN__
#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
#define DBL_MAX_EXP __DBL_MAX_EXP__
#define DBL_MAX __DBL_MAX__
#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
#else /* GCC < 3.3 */
#define FLT_RADIX 2 /* b */
#define FLT_MANT_DIG 24 /* p */
#define FLT_DIG 6 /* floor((p-1)*log10(b))+(b == 10) */
#define FLT_MIN_EXP (-125) /* emin */
#define FLT_MIN_10_EXP (-37) /* ceil(log10(b**(emin-1))) */
#define FLT_MAX_EXP 128 /* emax */
#define FLT_MAX_10_EXP 38 /* floor(log10((1-b**(-p))*b**emax)) */
#if __STDC_VERSION__ >= 199901L
#define FLT_EPSILON 0x1.0p-23F
#define FLT_MIN 0x1.0p-126F
#define FLT_MAX 0x1.fffffep+127F
#else
#define FLT_EPSILON 1.19209290E-7F /* b**(1-p) */
#define FLT_MIN 1.17549435E-38F /* b**(emin-1) */
#define FLT_MAX 3.40282347E+38F /* (1-b**(-p))*b**emax */
#endif
#define DBL_MANT_DIG 53
#define DBL_DIG 15
#define DBL_MIN_EXP (-1021)
#define DBL_MIN_10_EXP (-307)
#define DBL_MAX_EXP 1024
#define DBL_MAX_10_EXP 308
#if __STDC_VERSION__ >= 199901L
#define DBL_EPSILON 0x1.0p-52
#define DBL_MIN 0x1.0p-1022
#define DBL_MAX 0x1.fffffffffffffp+1023
#else
#define DBL_EPSILON 2.2204460492503131E-16
#define DBL_MIN 2.2250738585072014E-308
#define DBL_MAX 1.7976931348623157E+308
#endif
#endif /* GCC < 3.3 */
/*
* 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)
#if __GNUC_PREREQ__(3, 3)
#define DECIMAL_DIG __DECIMAL_DIG__
#else
#define DECIMAL_DIG 17 /* ceil((1+p*log10(b))-(b==10) */
#endif
#endif /* !defined(_ANSI_SOURCE) && ... */
#endif /* LDBL_MANT_DIG */
#endif /* _SYS_FLOAT_IEEE754_H_ */
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