1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
24 */
25 /*
26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
27 * Use is subject to license terms.
28 */
29
30 #include "libm.h"
31
32 #define GENERIC long double
33 #define ATAN2PI atan2pil
34 #define ATAN2 atan2l
35
36 /* ATAN2PI(y,x)
37 *
38 * ATAN2PI(y,x) = ATAN2(y,x)/pi
39 */
40
41 extern GENERIC ATAN2();
42
43 static GENERIC
44 invpi = (GENERIC) 3.183098861837906715377675267450287240689e-0001L;
45
ATAN2PI(y,x)46 GENERIC ATAN2PI(y,x)
47 GENERIC y,x;
48 {
49 return ATAN2(y,x)*invpi;
50 }
51