/*- * 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. * * 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. */#if defined(LIBC_SCCS) && !defined(lint)static char sccsid[] = "@(#)floatdisf.c	8.1 (Berkeley) 6/4/93";#endif /* LIBC_SCCS and not lint */#include "quad.h"/* * Convert (signed) quad to float. */float__floatdisf(x)	quad_t x;{	float f;	union uu u;	int neg;	/*	 * Get an unsigned number first, by negating if necessary.	 */	if (x < 0)		u.q = -x, neg = 1;	else		u.q = x, neg = 0;	/*	 * Now u.ul[H] has the factor of 2^32 (or whatever) and u.ul[L]	 * has the units.  Ideally we could just set f, add LONG_BITS to	 * its exponent, and then add the units, but this is portable	 * code and does not know how to get at an exponent.  Machine-	 * specific code may be able to do this more efficiently.	 *	 * Using double here may be excessive paranoia.	 */	f = (double)u.ul[H] * ((1 << (LONG_BITS - 2)) * 4.0);	f += u.ul[L];	return (neg ? -f : f);}