about summary refs log tree commit diff
path: root/math/w_lgammal_r_compat.c
blob: b9c934402431577736d2950d99e019a2e39f5108 (plain) (blame)
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
/* w_lgammal_r.c -- long double version of w_lgamma_r.c.
 */

/*
 * ====================================================
 * 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 long double lgammal_r(long double x, int *signgamp)
 */

#include <math.h>
#include <math_private.h>
#include <math-svid-compat.h>
#include <libm-alias-ldouble.h>


#if LIBM_SVID_COMPAT
long double
__lgammal_r(long double x, int *signgamp)
{
	long double y = __ieee754_lgammal_r(x,signgamp);
	if(__builtin_expect(!isfinite(y), 0)
	   && isfinite(x) && _LIB_VERSION != _IEEE_)
		return __kernel_standard(x, x,
					 floorl(x)==x&&x<=0.0
					 ? 215 /* lgamma pole */
					 : 214); /* lgamma overflow */

	return y;
}
libm_alias_ldouble_r (__lgamma, lgamma, _r)
#endif