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/* $OpenBSD: vaxfp.h,v 1.1 2008/07/21 21:50:06 martynas Exp $ */
/* $NetBSD: vaxfp.h,v 1.7 2008/04/28 20:23:39 martin Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Klaus Klein.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* vaxfp.h defines the layout of VAX Floating-Point data types.
* Only F_floating and D_floating types are defined here;
* G_floating and H_floating are not supported by OpenBSD.
*/
#ifndef _VAX_VAXFP_H_
#define _VAX_VAXFP_H_
#define FFLT_EXPBITS 8
#define FFLT_FRACHBITS 7
#define FFLT_FRACLBITS 16
#define FFLT_FRACBITS (FFLT_FRACLBITS + FFLT_FRACHBITS)
struct vax_f_floating {
unsigned int fflt_frach:FFLT_FRACHBITS;
unsigned int fflt_exp:FFLT_EXPBITS;
unsigned int fflt_sign:1;
unsigned int fflt_fracl:FFLT_FRACLBITS;
};
#define DFLT_EXPBITS 8
#define DFLT_FRACHBITS 7
#define DFLT_FRACMBITS 16
#define DFLT_FRACLBITS 32
#define DFLT_FRACBITS (DFLT_FRACLBITS + DFLT_FRACMBITS + DFLT_FRACHBITS)
struct vax_d_floating {
unsigned int dflt_frach:DFLT_FRACHBITS;
unsigned int dflt_exp:DFLT_EXPBITS;
unsigned int dflt_sign:1;
unsigned int dflt_fracm:DFLT_FRACMBITS;
unsigned int dflt_fracl:DFLT_FRACLBITS;
};
/*
* Exponent biases.
*/
#define FFLT_EXP_BIAS 128
#define DFLT_EXP_BIAS 128
/*
* Convenience data structures.
*/
union vax_ffloating_u {
float ffltu_f;
struct vax_f_floating ffltu_fflt;
};
union vax_dfloating_u {
double dfltu_d;
struct vax_d_floating dfltu_dflt;
};
#endif /* _VAX_VAXFP_H_ */
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