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