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 }