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_div_ix(b, w) returns (I * b) / w computed by the text-
29 * book 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_rx.
33 */
34
35 #if !defined(i386) && !defined(__i386) && !defined(__amd64)
36 #error This code is for x86 only
37 #endif
38
39 float _Complex
_F_cplx_lr_div_ix(float b,float _Complex w)40 _F_cplx_lr_div_ix(float b, float _Complex w)
41 {
42 float _Complex v = 0;
43 long double c, d, r;
44
45 c = ((float *)&w)[0];
46 d = ((float *)&w)[1];
47 r = b / (c * c + d * d);
48 ((float *)&v)[0] = (float)(r * d);
49 ((float *)&v)[1] = (float)(r * c);
50 return (v);
51 }
52