1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
/* @(#)wr_lgamma.c 5.1 93/09/24 */
/*
* ====================================================
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
*
* Developed at SunPro, a Sun Microsystems, Inc. business.
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
/*
* wrapper double lgamma_r(double x, int *signgamp)
*/
#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>
#include <libm-alias-double.h>
#if LIBM_SVID_COMPAT
double
__lgamma_r(double x, int *signgamp)
{
double y = __ieee754_lgamma_r(x,signgamp);
if(__builtin_expect(!isfinite(y), 0)
&& isfinite(x) && _LIB_VERSION != _IEEE_)
return __kernel_standard(x, x,
floor(x)==x&&x<=0.0
? 15 /* lgamma pole */
: 14); /* lgamma overflow */
return y;
}
libm_alias_double_r (__lgamma, lgamma, _r)
#endif
|
