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 __lgamma_r = lgamma_r
30
31 #include "libm.h"
32
33 double
lgamma_r(double x,int * signgamp)34 lgamma_r(double x, int *signgamp) {
35 double g;
36
37 if (isnan(x))
38 return (x * x);
39
40 g = rint(x);
41 if (x == g && x <= 0.0) {
42 *signgamp = 1;
43 return (_SVID_libm_err(x, x, 15));
44 }
45
46 g = __k_lgamma(x, signgamp);
47 if (!finite(g))
48 g = _SVID_libm_err(x, x, 14);
49 return (g);
50 }
51