/* w_gammaf.c -- float version of w_gamma.c.

 * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@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.

 * ====================================================

 */

#include <errno.h>

#include <math.h>

#include <math_private.h>

#include <math-svid-compat.h>

#include <libm-alias-float.h>

#if LIBM_SVID_COMPAT

float

__tgammaf(float x)

{

	int local_signgam;

	float y = __ieee754_gammaf_r(x,&local_signgam);

	if(__glibc_unlikely (!isfinite (y) || y == 0)

	   && (isfinite (x) || (isinf (x) && x < 0.0))

	   && _LIB_VERSION != _IEEE_) {

	  if (x == (float)0.0)

	    /* tgammaf pole */

	    return __kernel_standard_f(x, x, 150);

	  else if(__floorf(x)==x&&x<0.0f)

	    /* tgammaf domain */

	    return __kernel_standard_f(x, x, 141);

	  else if (y == 0)

	    /* tgammaf underflow */

	    __set_errno (ERANGE);

	  else

	    /* tgammaf overflow */

	    return __kernel_standard_f(x, x, 140);

	}

	return local_signgam < 0 ? - y : y;

}

libm_alias_float (__tgamma, tgamma)

#endif