/*
* 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
* 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"
/*
* __dtoul(x) converts double x to unsigned long.
*/
unsigned long
__dtoul(double x)
{
union {
double d;
unsigned long l;
} u;
u.d = x;
/* handle cases for which double->unsigned long differs from */
/* double->signed long */
if ((u.l >> 52) == 0x43e) {
/* 2^63 <= x < 2^64 */
return (0x8000000000000000ul | (u.l << 11));
}
/* for all other cases, just convert to signed long */
return ((long)x);
}