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- /* w_gammal.c -- long double version of w_gamma.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 gammal(double x)
- * Return the Gamma function of x.
- */
- #include <math.h>
- #include "math_private.h"
- #if defined(__UCLIBC_HAS_FENV__)
- #include <errno.h>
- #endif
- #if !defined __NO_LONG_DOUBLE_MATH
- long double
- tgammal(long double x)
- {
- # if defined(__UCLIBC_HAS_FENV__)
- long double y = (long double) __ieee754_tgamma((long double)x);
- if(__builtin_expect (!isfinite (y) || y == 0, 0)
- && (isfinite (x) || (isinf (x) && x < 0.0))
- && _LIB_VERSION != _IEEE_) {
- if(x==0.0)
- return __kernel_standard_l(x,x,250); /* tgamma pole */
- else if(floorl(x)==x&&x<0.0L)
- return __kernel_standard_l(x,x,241); /* tgamma domain */
- else if (y == 0)
- __set_errno (ERANGE); /* tgamma underflow */
- else
- return __kernel_standard_l(x,x,240); /* tgamma overflow */
- }
- return y;
- # else
- return (long double) __ieee754_tgamma((long double)x);
- # endif /* __UCLIBC_HAS_FENV__ */
- }
- #endif /* __NO_LONG_DOUBLE_MATH */
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