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/* wf_lgamma.c -- float version of w_lgamma.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 "fdlibm.h"
#include <reent.h>
#include <errno.h>
#ifdef __STDC__
float lgammaf(float x)
#else
float lgammaf(x)
float x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_lgammaf_r(x,&(_REENT_SIGNGAM(_REENT)));
#else
float y;
y = __ieee754_lgammaf_r(x,&(_REENT_SIGNGAM(_REENT)));
if(_LIB_VERSION == _IEEE_) return y;
if(!finitef(y)&&finitef(x)) {
/* lgammaf(finite) overflow */
errno = ERANGE;
}
return y;
#endif
}
#ifdef _DOUBLE_IS_32BITS
#ifdef __STDC__
double lgamma(double x)
#else
double lgamma(x)
double x;
#endif
{
return (double) lgammaf((float) x);
}
#endif /* defined(_DOUBLE_IS_32BITS) */