cb65cc3fb4
The upstream intention was for this to be architecture-dependent, but it's a lot clearer if we just have one copy. Change-Id: I4e8310496145f9f411cd2e847c8cd023b1d758e9
119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/* $OpenBSD: ieee.h,v 1.4 2011/11/08 17:06:51 deraadt Exp $ */
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/* $NetBSD: ieee.h,v 1.2 2001/02/21 17:43:50 bjh21 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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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)ieee.h 8.1 (Berkeley) 6/11/93
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*/
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#ifndef _MACHINE_IEEE_H_
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#define _MACHINE_IEEE_H_
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#include <sys/types.h>
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__BEGIN_DECLS
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#define SNG_EXPBITS 8
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#define SNG_FRACBITS 23
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#define SNG_EXP_INFNAN 255
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#define SNG_EXP_BIAS 127
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struct ieee_single {
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unsigned sng_frac:23;
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unsigned sng_exp:8;
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unsigned sng_sign:1;
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};
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#define DBL_EXPBITS 11
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#define DBL_FRACHBITS 20
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#define DBL_FRACLBITS 32
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#define DBL_FRACBITS 52
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#define DBL_EXP_INFNAN 2047
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#define DBL_EXP_BIAS 1023
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struct ieee_double {
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unsigned dbl_fracl;
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unsigned dbl_frach:20;
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unsigned dbl_exp:11;
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unsigned dbl_sign:1;
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};
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#if __LP64__
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/* 64-bit Android uses ld128 long doubles. */
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#define EXT_EXPBITS 15
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#define EXT_FRACHBITS 16
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#define EXT_FRACHMBITS 32
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#define EXT_FRACLMBITS 32
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#define EXT_FRACLBITS 32
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#define EXT_FRACBITS 112
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#define EXT_EXP_INFNAN 32767
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#define EXT_EXP_BIAS 16383
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#define EXT_IMPLICIT_NBIT
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#define EXT_TO_ARRAY32(p, a) do { \
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(a)[0] = (uint32_t)(p)->ext_fracl; \
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(a)[1] = (uint32_t)(p)->ext_fraclm; \
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(a)[2] = (uint32_t)(p)->ext_frachm; \
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(a)[3] = (uint32_t)(p)->ext_frach; \
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} while(0)
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struct ieee_ext {
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unsigned ext_fracl;
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unsigned ext_fraclm;
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unsigned ext_frachm;
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unsigned ext_frach:16;
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unsigned ext_exp:15;
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unsigned ext_sign:1;
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};
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#endif
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__END_DECLS
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#endif /* _MACHINE_IEEE_H_ */
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