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 2003 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 * On SPARC V8, _Q_cplx_lr_mul(v, z, w) sets *v = *z * *w computed by 31 * the textbook formula without regard to exceptions or special cases. 32 * 33 * On SPARC V9, _Q_cplx_lr_mul(z, w) returns *z * *w. 34 * 35 * This code is intended to be used only when CX_LIMITED_RANGE is ON; 36 * otherwise use _Q_cplx_mul. 37 */ 38 39 #if !defined(sparc) && !defined(__sparc) 40 #error This code is for SPARC only 41 #endif 42 43 #ifdef __sparcv9 44 long double _Complex 45 _Q_cplx_lr_mul(const long double _Complex *z, const long double _Complex *w) 46 { 47 long double _Complex v; 48 #else 49 void 50 _Q_cplx_lr_mul(long double _Complex *v, const long double _Complex *z, 51 const long double _Complex *w) 52 { 53 #endif 54 long double a, b, c, d; 55 56 a = ((long double *)z)[0]; 57 b = ((long double *)z)[1]; 58 c = ((long double *)w)[0]; 59 d = ((long double *)w)[1]; 60 61 #ifdef __sparcv9 62 ((long double *)&v)[0] = (a * c - b * d); 63 ((long double *)&v)[1] = (a * d + b * c); 64 return (v); 65 #else 66 ((long double *)v)[0] = (a * c - b * d); 67 ((long double *)v)[1] = (a * d + b * c); 68 #endif 69 } 70