xref: /titanic_51/usr/src/lib/libm/common/LD/atan2pil.c (revision 9ef283481583d677cd2cf5449ef49b90eacc97d4)
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 
46 GENERIC ATAN2PI(y,x)
47 GENERIC y,x;
48 {
49 	return ATAN2(y,x)*invpi;
50 }
51