1 /* @(#)w_lgamma.c 5.1 93/09/24 */
3 * ====================================================
4 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
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
10 * ====================================================
13 /* double lgamma(double x)
14 * Return the logarithm of the Gamma function of x.
16 * Method: call __ieee754_lgamma_r
20 #include <math_private.h>
21 #include <math-svid-compat.h>
23 #include <lgamma-compat.h>
27 LGFUNC (__lgamma
) (double x
)
29 double y
= CALL_LGAMMA (double, __ieee754_lgamma_r
, x
);
30 if(__builtin_expect(!isfinite(y
), 0)
31 && isfinite(x
) && _LIB_VERSION
!= _IEEE_
)
32 return __kernel_standard(x
, x
,
34 ? 15 /* lgamma pole */
35 : 14); /* lgamma overflow */
40 compat_symbol (libm
, __lgamma_compat
, lgamma
, LGAMMA_OLD_VER
);
41 # ifdef NO_LONG_DOUBLE
42 strong_alias (__lgamma_compat
, __lgammal_compat
)
43 compat_symbol (libm
, __lgammal_compat
, lgammal
, LGAMMA_OLD_VER
);
46 versioned_symbol (libm
, __lgamma
, lgamma
, LGAMMA_NEW_VER
);
47 # ifdef NO_LONG_DOUBLE
48 strong_alias (__lgamma
, __lgammal
)
49 versioned_symbol (libm
, __lgammal
, lgammal
, LGAMMA_NEW_VER
);
53 strong_alias (LGFUNC (__lgamma
), __gamma
)
54 weak_alias (__gamma
, gamma
)
55 # ifdef NO_LONG_DOUBLE
56 strong_alias (__gamma
, __gammal
)
57 weak_alias (__gamma
, gammal
)