17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
217c478bd9Sstevel@tonic-gate */
227c478bd9Sstevel@tonic-gate /*
237c478bd9Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate /*
287c478bd9Sstevel@tonic-gate * On SPARC V8, _Q_cplx_lr_div_rx(v, a, w) sets *v = *a / *w computed
297c478bd9Sstevel@tonic-gate * by the textbook formula without regard to exceptions or special
307c478bd9Sstevel@tonic-gate * cases.
317c478bd9Sstevel@tonic-gate *
327c478bd9Sstevel@tonic-gate * On SPARC V9, _Q_cplx_lr_div_rx(a, w) returns *a / *w.
337c478bd9Sstevel@tonic-gate *
347c478bd9Sstevel@tonic-gate * This code is intended to be used only when CX_LIMITED_RANGE is ON;
357c478bd9Sstevel@tonic-gate * otherwise use _Q_cplx_div_rx.
367c478bd9Sstevel@tonic-gate */
377c478bd9Sstevel@tonic-gate
387c478bd9Sstevel@tonic-gate #if !defined(sparc) && !defined(__sparc)
397c478bd9Sstevel@tonic-gate #error This code is for SPARC only
407c478bd9Sstevel@tonic-gate #endif
417c478bd9Sstevel@tonic-gate
427c478bd9Sstevel@tonic-gate #ifdef __sparcv9
437c478bd9Sstevel@tonic-gate long double _Complex
_Q_cplx_lr_div_rx(const long double * pa,const long double _Complex * w)447c478bd9Sstevel@tonic-gate _Q_cplx_lr_div_rx(const long double *pa, const long double _Complex *w)
457c478bd9Sstevel@tonic-gate {
46*1d9fea2aSToomas Soome long double _Complex v = 0;
477c478bd9Sstevel@tonic-gate #else
487c478bd9Sstevel@tonic-gate void
497c478bd9Sstevel@tonic-gate _Q_cplx_lr_div_rx(long double _Complex *v, const long double *pa,
507c478bd9Sstevel@tonic-gate const long double _Complex *w)
517c478bd9Sstevel@tonic-gate {
527c478bd9Sstevel@tonic-gate #endif
537c478bd9Sstevel@tonic-gate long double a, c, d;
547c478bd9Sstevel@tonic-gate
557c478bd9Sstevel@tonic-gate a = *pa;
567c478bd9Sstevel@tonic-gate c = ((long double *)w)[0];
577c478bd9Sstevel@tonic-gate d = ((long double *)w)[1];
587c478bd9Sstevel@tonic-gate
597c478bd9Sstevel@tonic-gate a /= (c * c + d * d);
607c478bd9Sstevel@tonic-gate
617c478bd9Sstevel@tonic-gate #ifdef __sparcv9
627c478bd9Sstevel@tonic-gate ((long double *)&v)[0] = a * c;
637c478bd9Sstevel@tonic-gate ((long double *)&v)[1] = a * -d;
647c478bd9Sstevel@tonic-gate return (v);
657c478bd9Sstevel@tonic-gate #else
667c478bd9Sstevel@tonic-gate ((long double *)v)[0] = a * c;
677c478bd9Sstevel@tonic-gate ((long double *)v)[1] = a * -d;
687c478bd9Sstevel@tonic-gate #endif
697c478bd9Sstevel@tonic-gate }
70