1 /* file: lgamma.c */
2
3
4 // Copyright (c) 2002 Intel Corporation
5 // All rights reserved.
6 //
7 //
8 // Redistribution and use in source and binary forms, with or without
9 // modification, are permitted provided that the following conditions are
10 // met:
11 //
12 // * Redistributions of source code must retain the above copyright
13 // notice, this list of conditions and the following disclaimer.
14 //
15 // * Redistributions in binary form must reproduce the above copyright
16 // notice, this list of conditions and the following disclaimer in the
17 // documentation and/or other materials provided with the distribution.
18 //
19 // * The name of Intel Corporation may not be used to endorse or promote
20 // products derived from this software without specific prior written
21 // permission.
22
23 //
24 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
28 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
31 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
32 // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
33 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 //
36 // Intel Corporation is the author of this code, and requests that all
37 // problem reports or change requests be submitted to it directly at
38 // http://www.intel.com/software/products/opensource/libraries/num.htm.
39 //
40 //
41
42 // History
43 //==============================================================
44 // 02/04/02: Initial version
45 // 02/22/02: Removed lgammaf/gammaf
46 //
47 /*
48 // FUNCTIONS: double lgamma(double x)
49 // double gamma(double x)
50 // Natural logarithm of GAMMA function
51 */
52
53 #include "libm_support.h"
54
55 #include <math.h>
56 #include <math_private.h>
57
58 #include <lgamma-compat.h>
59
60 extern double __libm_lgamma(double /*x*/, int* /*signgam*/, int /*signgamsz*/);
61
62 #if BUILD_LGAMMA
LGFUNC(lgamma)63 double LGFUNC (lgamma) (double x)
64 {
65 return CALL_LGAMMA (double, __libm_lgamma, x);
66 }
67 # if USE_AS_COMPAT
68 compat_symbol (libm, __lgamma_compat, lgamma, LGAMMA_OLD_VER);
69 # else
70 versioned_symbol (libm, __ieee754_lgamma, lgamma, LGAMMA_NEW_VER);
71 libm_alias_double_other (__ieee754_lgamma, lgamma)
72 # endif
73 # if GAMMA_ALIAS
74 strong_alias (LGFUNC (lgamma), __ieee754_gamma)
75 weak_alias (__ieee754_gamma, gamma)
76 # endif
77 #endif
78