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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * _D_cplx_lr_div(z, w) returns z / w computed by the textbook 31 * formula without regard to exceptions or special cases. 32 * 33 * This code is intended to be used only when CX_LIMITED_RANGE is 34 * ON; otherwise use _D_cplx_div. 35 */ 36 37 #if !defined(i386) && !defined(__i386) && !defined(__amd64) 38 #error This code is for x86 only 39 #endif 40 41 double _Complex 42 _D_cplx_lr_div(double _Complex z, double _Complex w) 43 { 44 double _Complex v; 45 long double a, b, c, d, r; 46 47 /* LINTED alignment */ 48 a = ((double *)&z)[0]; 49 /* LINTED alignment */ 50 b = ((double *)&z)[1]; 51 /* LINTED alignment */ 52 c = ((double *)&w)[0]; 53 /* LINTED alignment */ 54 d = ((double *)&w)[1]; 55 r = 1.0f / (c * c + d * d); 56 /* LINTED alignment */ 57 ((double *)&v)[0] = (double)((a * c + b * d) * r); 58 /* LINTED alignment */ 59 ((double *)&v)[1] = (double)((b * c - a * d) * r); 60 return (v); 61 } 62