/* @(#)w_log10.c 1.3 95/01/18 */

/*

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

 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 *

 * Developed at SunSoft, a Sun Microsystems, Inc. business.

 * Permission to use, copy, modify, and distribute this

 * software is freely granted, provided that this notice 

 * is preserved.

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

 */

/* 

 * wrapper log10(X)

 */

#include "fdlibm.h"

#ifdef __STDC__

	double log10(double x)		/* wrapper log10 */

#else

	double log10(x)			/* wrapper log10 */

	double x;

#endif

{

#ifdef _IEEE_LIBM

	return __ieee754_log10(x);

#else

	double z;

	z = __ieee754_log10(x);

	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;

	if(x<=0.0) {

	    if(x==0.0)

	        return __kernel_standard(x,x,18); /* log10(0) */

	    else 

	        return __kernel_standard(x,x,19); /* log10(x<0) */

	} else

	    return z;

#endif

}