|
1081
|
1 /* |
|
|
2 |
|
|
3 Copyright (C) 1995 John W. Eaton |
|
|
4 |
|
|
5 This file is part of Octave. |
|
|
6 |
|
|
7 Octave is free software; you can redistribute it and/or modify it |
|
|
8 under the terms of the GNU General Public License as published by the |
|
|
9 Free Software Foundation; either version 2, or (at your option) any |
|
|
10 later version. |
|
|
11 |
|
|
12 Octave is distributed in the hope that it will be useful, but WITHOUT |
|
|
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
|
15 for more details. |
|
|
16 |
|
|
17 You should have received a copy of the GNU General Public License |
|
|
18 along with Octave; see the file COPYING. If not, write to the Free |
|
1315
|
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
|
1081
|
20 |
|
|
21 */ |
|
|
22 |
|
|
23 #ifdef HAVE_CONFIG_H |
|
1243
|
24 #include <config.h> |
|
1081
|
25 #endif |
|
|
26 |
|
|
27 #ifndef HAVE_LGAMMA |
|
|
28 |
|
|
29 #include "f77-uscore.h" |
|
|
30 |
|
|
31 /* If the system doesn't have lgamma, assume that it doesn't have |
|
|
32 signgam either */ |
|
|
33 |
|
|
34 int signgam; |
|
|
35 |
|
1255
|
36 extern int F77_FCN (dlgams, DLGAMS) (const double&, double&, double&); |
|
1081
|
37 |
|
|
38 double |
|
|
39 lgamma (double x) |
|
|
40 { |
|
|
41 double result; |
|
|
42 double sgngam; |
|
|
43 |
|
1255
|
44 F77_FCN (dlgams, DLGAMS) (x, result, sgngam); |
|
1081
|
45 |
|
|
46 signgam = (int) sgngam; |
|
|
47 |
|
|
48 return result; |
|
|
49 } |
|
|
50 |
|
|
51 #endif |
|
|
52 |
|
|
53 /* |
|
|
54 ;;; Local Variables: *** |
|
|
55 ;;; mode: C *** |
|
|
56 ;;; page-delimiter: "^/\\*" *** |
|
|
57 ;;; End: *** |
|
|
58 */ |
