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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
23 */
24/*
25 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
26 * Use is subject to license terms.
27 */
28
29#pragma weak __erff = erff
30#pragma weak __erfcf = erfcf
31
32#include "libm.h"
33
34#if defined(__i386) && !defined(__amd64)
35extern int __swapRP(int);
36#endif
37
38float
39erff(float x) {
40	int	ix;
41
42	ix = *(int *)&x & ~0x80000000;
43	if (ix > 0x7f800000)	/* x is NaN */
44		return (x * x);
45	return ((float)erf((double)x));
46}
47
48float
49erfcf(float x) {
50	float	f;
51	int	ix;
52#if defined(__i386) && !defined(__amd64)
53	int	rp;
54#endif
55
56	ix = *(int *)&x & ~0x80000000;
57	if (ix > 0x7f800000)	/* x is NaN */
58		return (x * x);
59
60#if defined(__i386) && !defined(__amd64)
61	rp = __swapRP(fp_extended);
62#endif
63	f = (float)erfc((double)x);
64#if defined(__i386) && !defined(__amd64)
65	if (rp != fp_extended)
66		(void) __swapRP(rp);
67#endif
68	return (f);
69}
70