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
39
40
41
42
43
44
45
46
47
|
/* w_lgammal.c -- long double version of w_lgamma.c.
* Conversion to long double by Ulrich Drepper,
* Cygnus Support, drepper@cygnus.com.
*/
/*
* ====================================================
* 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.
* ====================================================
*/
/* long double lgammal(long double x)
* Return the logarithm of the Gamma function of x.
*
* Method: call __ieee754_lgammal_r
*/
#include <math.h>
#include <math_private.h>
long double
__lgammal(long double x)
{
int local_signgam = 0;
long double y = __ieee754_lgammal_r(x,
_LIB_VERSION != _ISOC_
/* ISO C99 does not define the
global variable. */
? &signgam
: &local_signgam);
if(__builtin_expect(!__finitel(y), 0)
&& __finitel(x) && _LIB_VERSION != _IEEE_)
return __kernel_standard_l(x, x,
__floorl(x)==x&&x<=0.0L
? 215 /* lgamma pole */
: 214); /* lgamma overflow */
return y;
}
weak_alias (__lgammal, lgammal)
strong_alias (__lgammal, __gammal)
weak_alias (__gammal, gammal)
|
