/*
* 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
*/
#pragma ident "%Z%%M% %I% %E% SMI" /* from ATT S5R3 */
/* The following is extracted from... */
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
/*
* modf(value, iptr) returns the signed fractional part of value
* and stores the integer part indirectly through iptr.
*
*/
#define MAXPOWTWO 4.503599627370496000E+15
/* doubles >= MAXPOWTWO are already integers */
double
modf(value, iptr)
double value;
register double *iptr;
{
register double absvalue;
if ((absvalue = (value >= 0.0) ? value : -value) >= MAXPOWTWO)
*iptr = value; /* it must be an integer */
else {
*iptr = absvalue + MAXPOWTWO; /* shift fraction off right */
*iptr -= MAXPOWTWO; /* shift back without fraction */
while (*iptr > absvalue) /* above arithmetic might round */
*iptr -= 1.0; /* test again just to be sure */
if (value < 0.0)
*iptr = -*iptr;
}
return (value - *iptr); /* signed fractional part */
}