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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* ceill(x) return the biggest integral value below x
* floorl(x) return the least integral value above x
*
* NOTE: aintl(x), anintl(x), ceill(x), floorl(x), and rintl(x) return result
* with the same sign as x's, including 0.0.
*/
#pragma weak ceill = __ceill
#pragma weak floorl = __floorl
#include "libm.h"
#include "longdouble.h"
static const long double qone = 1.0L;
long double
ceill(long double x) {
long double t;
if (!finitel(x))
return (x + x);
t = rintl(x);
if (t >= x) /* already ceil(x) */
return (t);
else /* t < x case: return t+1 */
return (copysignl(t + qone, x));
}
long double
floorl(long double x) {
long double t;
if (!finitel(x))
return (x + x);
t = rintl(x);
if (t <= x)
return (t); /* already floor(x) */
else /* x < t case: return t-1 */
return (copysignl(t - qone, x));
}
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