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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.
*/
#pragma weak __hypotf = hypotf
#include "libm.h"
float
hypotf(float x, float y) {
double dx, dy;
float w;
int ix, iy;
ix = (*(int *) &x) & 0x7fffffff;
iy = (*(int *) &y) & 0x7fffffff;
if (ix >= 0x7f800000) {
if (ix == 0x7f800000)
*(int *) &w = x == y ? iy : ix; /* w = |x| = inf */
else if (iy == 0x7f800000)
*(int *) &w = x == y ? ix : iy; /* w = |y| = inf */
else
w = fabsf(x) * fabsf(y); /* + -> * for Cheetah */
} else if (iy >= 0x7f800000) {
if (iy == 0x7f800000)
*(int *) &w = x == y ? ix : iy; /* w = |y| = inf */
else
w = fabsf(x) * fabsf(y); /* + -> * for Cheetah */
} else if (ix == 0)
*(int *) &w = iy; /* w = |y| */
else if (iy == 0)
*(int *) &w = ix; /* w = |x| */
else {
dx = (double) x;
dy = (double) y;
w = (float) sqrt(dx * dx + dy * dy);
}
return (w);
}
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