/* $OpenBSD: ieee.h,v 1.4 2011/11/08 17:06:51 deraadt Exp $ */
|
/* $NetBSD: ieee.h,v 1.2 2001/02/21 17:43:50 bjh21 Exp $ */
|
|
/*
|
* Copyright (c) 1992, 1993
|
* The Regents of the University of California. All rights reserved.
|
*
|
* This software was developed by the Computer Systems Engineering group
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
* contributed to Berkeley.
|
*
|
* All advertising materials mentioning features or use of this software
|
* must display the following acknowledgement:
|
* This product includes software developed by the University of
|
* California, Lawrence Berkeley Laboratory.
|
*
|
* 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. All advertising materials mentioning features or use of this software
|
* must display the following acknowledgement:
|
* This product includes software developed by the University of
|
* California, Berkeley and its contributors.
|
* 4. 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.
|
*
|
* @(#)ieee.h 8.1 (Berkeley) 6/11/93
|
*/
|
|
#ifndef _MACHINE_IEEE_H_
|
#define _MACHINE_IEEE_H_
|
|
#include <sys/types.h>
|
|
__BEGIN_DECLS
|
|
#define SNG_EXPBITS 8
|
#define SNG_FRACBITS 23
|
|
#define SNG_EXP_INFNAN 255
|
#define SNG_EXP_BIAS 127
|
|
struct ieee_single {
|
unsigned sng_frac:23;
|
unsigned sng_exp:8;
|
unsigned sng_sign:1;
|
};
|
|
#define DBL_EXPBITS 11
|
#define DBL_FRACHBITS 20
|
#define DBL_FRACLBITS 32
|
#define DBL_FRACBITS 52
|
|
#define DBL_EXP_INFNAN 2047
|
#define DBL_EXP_BIAS 1023
|
|
struct ieee_double {
|
unsigned dbl_fracl;
|
unsigned dbl_frach:20;
|
unsigned dbl_exp:11;
|
unsigned dbl_sign:1;
|
};
|
|
#if defined(__LP64__)
|
|
/* 64-bit Android uses ld128 long doubles. */
|
|
#define EXT_EXPBITS 15
|
#define EXT_FRACHBITS 16
|
#define EXT_FRACHMBITS 32
|
#define EXT_FRACLMBITS 32
|
#define EXT_FRACLBITS 32
|
#define EXT_FRACBITS 112
|
|
#define EXT_EXP_INFNAN 32767
|
#define EXT_EXP_BIAS 16383
|
|
#define EXT_IMPLICIT_NBIT
|
|
#define EXT_TO_ARRAY32(p, a) do { \
|
(a)[0] = (uint32_t)(p)->ext_fracl; \
|
(a)[1] = (uint32_t)(p)->ext_fraclm; \
|
(a)[2] = (uint32_t)(p)->ext_frachm; \
|
(a)[3] = (uint32_t)(p)->ext_frach; \
|
} while(0)
|
|
struct ieee_ext {
|
unsigned ext_fracl;
|
unsigned ext_fraclm;
|
unsigned ext_frachm;
|
unsigned ext_frach:16;
|
unsigned ext_exp:15;
|
unsigned ext_sign:1;
|
};
|
|
#endif
|
|
__END_DECLS
|
|
#endif /* _MACHINE_IEEE_H_ */
|
