1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate /* 30*7c478bd9Sstevel@tonic-gate * On SPARC V8, _Q_cplx_lr_div_rx(v, a, w) sets *v = *a / *w computed 31*7c478bd9Sstevel@tonic-gate * by the textbook formula without regard to exceptions or special 32*7c478bd9Sstevel@tonic-gate * cases. 33*7c478bd9Sstevel@tonic-gate * 34*7c478bd9Sstevel@tonic-gate * On SPARC V9, _Q_cplx_lr_div_rx(a, w) returns *a / *w. 35*7c478bd9Sstevel@tonic-gate * 36*7c478bd9Sstevel@tonic-gate * This code is intended to be used only when CX_LIMITED_RANGE is ON; 37*7c478bd9Sstevel@tonic-gate * otherwise use _Q_cplx_div_rx. 38*7c478bd9Sstevel@tonic-gate */ 39*7c478bd9Sstevel@tonic-gate 40*7c478bd9Sstevel@tonic-gate #if !defined(sparc) && !defined(__sparc) 41*7c478bd9Sstevel@tonic-gate #error This code is for SPARC only 42*7c478bd9Sstevel@tonic-gate #endif 43*7c478bd9Sstevel@tonic-gate 44*7c478bd9Sstevel@tonic-gate #ifdef __sparcv9 45*7c478bd9Sstevel@tonic-gate long double _Complex 46*7c478bd9Sstevel@tonic-gate _Q_cplx_lr_div_rx(const long double *pa, const long double _Complex *w) 47*7c478bd9Sstevel@tonic-gate { 48*7c478bd9Sstevel@tonic-gate long double _Complex v; 49*7c478bd9Sstevel@tonic-gate #else 50*7c478bd9Sstevel@tonic-gate void 51*7c478bd9Sstevel@tonic-gate _Q_cplx_lr_div_rx(long double _Complex *v, const long double *pa, 52*7c478bd9Sstevel@tonic-gate const long double _Complex *w) 53*7c478bd9Sstevel@tonic-gate { 54*7c478bd9Sstevel@tonic-gate #endif 55*7c478bd9Sstevel@tonic-gate long double a, c, d; 56*7c478bd9Sstevel@tonic-gate 57*7c478bd9Sstevel@tonic-gate a = *pa; 58*7c478bd9Sstevel@tonic-gate c = ((long double *)w)[0]; 59*7c478bd9Sstevel@tonic-gate d = ((long double *)w)[1]; 60*7c478bd9Sstevel@tonic-gate 61*7c478bd9Sstevel@tonic-gate a /= (c * c + d * d); 62*7c478bd9Sstevel@tonic-gate 63*7c478bd9Sstevel@tonic-gate #ifdef __sparcv9 64*7c478bd9Sstevel@tonic-gate ((long double *)&v)[0] = a * c; 65*7c478bd9Sstevel@tonic-gate ((long double *)&v)[1] = a * -d; 66*7c478bd9Sstevel@tonic-gate return (v); 67*7c478bd9Sstevel@tonic-gate #else 68*7c478bd9Sstevel@tonic-gate ((long double *)v)[0] = a * c; 69*7c478bd9Sstevel@tonic-gate ((long double *)v)[1] = a * -d; 70*7c478bd9Sstevel@tonic-gate #endif 71*7c478bd9Sstevel@tonic-gate } 72