xref: /bionic/libm/sh/_fpmath.h

/*
 * Copyright (C) 2009 Android Open Source Project, All rights reserved.
 *   Derived from "bionic/libm/arm/_fpmath.h"
 *   Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * 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 COPYRIGHT HOLDERS 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
 * COPYRIGHT OWNER 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.
 */

/*
 * Assumes that 'long double' on SH-linux is just an alias for 'double'.
 */
union IEEEl2bits {
	long double	e;
	struct {
#if  __BYTE_ORDER == __LITTLE_ENDIAN
		unsigned int	manl	:32;
		unsigned int	manh	:20;
		unsigned int	exp	:11;
		unsigned int	sign	:1;
#elif __BYTE_ORDER == __BIG_ENDIAN
		unsigned int	sign	:1;
		unsigned int	exp	:11;
		unsigned int	manh	:20;
		unsigned int	manl	:32;
#endif
	} bits;
};

/*
 * LDBL_NBIT is a mask indicating the position of the integer
 * bit in a long double.  But SH4 does not support it.
 */
#define	LDBL_NBIT	0
#define	mask_nbit_l(u)	((void)0)

#define	LDBL_MANH_SIZE	20
#define	LDBL_MANL_SIZE	32