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_div_ix(v, b, w) sets *v = (I * *b / *w) 31 * compute by the textbook formula without regard to exceptions or 32 * special cases. 33 * 34 * On SPARC V9, _Q_cplx_lr_div_ix(b, w) returns (I * *b) / *w. 35 * 36 * This code is intended to be used only when CX_LIMITED_RANGE is ON; 37 * otherwise use _Q_cplx_div_ix. 38 */ 39 40 #if !defined(sparc) && !defined(__sparc) 41 #error This code is for SPARC only 42 #endif 43 44 #ifdef __sparcv9 45 long double _Complex 46 _Q_cplx_lr_div_ix(const long double *pb, const long double _Complex *w) 47 { 48 long double _Complex v; 49 #else 50 void 51 _Q_cplx_lr_div_ix(long double _Complex *v, const long double *pb, 52 const long double _Complex *w) 53 { 54 #endif 55 long double b, c, d; 56 57 b = *pb; 58 c = ((long double *)w)[0]; 59 d = ((long double *)w)[1]; 60 61 b /= (c * c + d * d); 62 63 #ifdef __sparcv9 64 ((long double *)&v)[0] = b * d; 65 ((long double *)&v)[1] = b * c; 66 return (v); 67 #else 68 ((long double *)v)[0] = b * d; 69 ((long double *)v)[1] = b * c; 70 #endif 71 } 72