fpmath.h

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/*-
 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
 * Copyright (c) 2002 David Schultz <dschultz@uclink.Berkeley.EDU>
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD: src/lib/libc/include/fpmath.h,v 1.1 2003/02/08 20:37:53 mike Exp $
 */
 
#include <sys/endian.h>
#include "_fpmath.h"
 
union IEEEf2bits {
    float   f;
    struct {
#if _BYTE_ORDER == _LITTLE_ENDIAN
        unsigned int    man :23;
        unsigned int    exp :8;
        unsigned int    sign    :1;
#else /* _BIG_ENDIAN */
        unsigned int    sign    :1;
        unsigned int    exp :8;
        unsigned int    man :23;
#endif
    } bits;
};
 
union IEEEd2bits {
    double  d;
    struct {
#if _BYTE_ORDER == _LITTLE_ENDIAN
        unsigned int    manl    :32;
        unsigned int    manh    :20;
        unsigned int    exp :11;
        unsigned int    sign    :1;
#else /* _BIG_ENDIAN */
        unsigned int    sign    :1;
        unsigned int    exp :11;
        unsigned int    manh    :20;
        unsigned int    manl    :32;
#endif
    } bits;
};