e_lgamma.c

来自「基于组件方式开发操作系统的OSKIT源代码」· C语言 代码 · 共 37 行

/* @(#)e_lgamma.c 5.1 93/09/24 */
/*
 * ====================================================
 * 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.
 * ====================================================
 */

#ifndef lint
static char rcsid[] = "$Id: e_lgamma.c,v 1.4 1997/02/22 15:10:22 peter Exp $";
#endif

/* __ieee754_lgamma(x)
 * Return the logarithm of the Gamma function of x.
 *
 * Method: call __ieee754_lgamma_r
 */

#include "math.h"
#include "math_private.h"

extern int signgam;

#ifdef __STDC__
	double __ieee754_lgamma(double x)
#else
	double __ieee754_lgamma(x)
	double x;
#endif
{
	return __ieee754_lgamma_r(x,&signgam);
}