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 /* 28 * _F_cplx_lr_div(z, w) returns z / w computed by the textbook 29 * formula without regard to exceptions or special cases. 30 * 31 * This code is intended to be used only when CX_LIMITED_RANGE is 32 * ON; otherwise use _F_cplx_div. 33 */ 34 35 #if !defined(i386) && !defined(__i386) && !defined(__amd64) 36 #error This code is for x86 only 37 #endif 38 39 float _Complex 40 _F_cplx_lr_div(float _Complex z, float _Complex w) 41 { 42 float _Complex v = 0; 43 long double a, b, c, d, r; 44 45 a = ((float *)&z)[0]; 46 b = ((float *)&z)[1]; 47 c = ((float *)&w)[0]; 48 d = ((float *)&w)[1]; 49 r = 1.0f / (c * c + d * d); 50 ((float *)&v)[0] = (float)((a * c + b * d) * r); 51 ((float *)&v)[1] = (float)((b * c - a * d) * r); 52 return (v); 53 } 54