/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1994-1997, by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "quad.h"
/*
* _Qp_uxtoq(pz, x) sets *pz = (long double)x.
*/
void
_Qp_uxtoq(union longdouble *pz, unsigned long x)
{
unsigned int e;
/* test for zero */
if (x == 0) {
Z.l.msw = Z.l.frac2 = Z.l.frac3 = Z.l.frac4 = 0;
QUAD_RETURN(Z);
}
/* find the most significant bit */
for (e = 63; (x & (1l << e)) == 0; e--)
;
if (e > 48) {
Z.l.msw = (x >> (e - 16)) & 0xffff;
Z.l.frac2 = x >> (e - 48);
Z.l.frac3 = x << (80 - e);
} else if (e > 16) {
Z.l.msw = (x >> (e - 16)) & 0xffff;
Z.l.frac2 = x << (48 - e);
Z.l.frac3 = 0;
} else {
Z.l.msw = (x << (16 - e)) & 0xffff;
Z.l.frac2 = Z.l.frac3 = 0;
}
Z.l.frac4 = 0;
Z.l.msw |= ((e + 0x3fff) << 16);
QUAD_RETURN(Z);
}