1 /* @(#)wr_lgamma.c 5.1 93/09/24 */
2 /*
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5 *
6 * Developed at SunPro, a Sun Microsystems, Inc. business.
7 * Permission to use, copy, modify, and distribute this
8 * software is freely granted, provided that this notice
9 * is preserved.
10 * ====================================================
11 */
12
13 /*
14 * wrapper double lgamma_r(double x, int *signgamp)
15 */
16
17 #include <math.h>
18 #include "math_private.h"
19
libm_hidden_proto(lgamma_r)20 libm_hidden_proto(lgamma_r)
21 double
22 lgamma_r(double x, int *signgamp)
23 {
24 #if defined(__UCLIBC_HAS_FENV__)
25 double y = __ieee754_lgamma_r(x,signgamp);
26 if(__builtin_expect(!isfinite(y), 0)
27 && isfinite(x) && _LIB_VERSION != _IEEE_)
28 return __kernel_standard(x, x,
29 floor(x)==x&&x<=0.0
30 ? 15 /* lgamma pole */
31 : 14); /* lgamma overflow */
32
33 return y;
34 #else
35 return __ieee754_lgamma_r(x,signgamp);
36 #endif /* __UCLIBC_HAS_FENV__ */
37 }
38 libm_hidden_def(lgamma_r)
39