/* @(#)w_exp.c 1.4 04/04/22 */

/*

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

 * Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved.

 *

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

 * software is freely granted, provided that this notice 

 * is preserved.

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

 */

/* 

 * wrapper exp(x)

 */

#include "fdlibm.h"

#ifdef __STDC__

static const double

#else

static double

#endif

o_threshold=  7.09782712893383973096e+02,  /* 0x40862E42, 0xFEFA39EF */

u_threshold= -7.45133219101941108420e+02;  /* 0xc0874910, 0xD52D3051 */

#ifdef __STDC__

	double exp(double x)		/* wrapper exp */

#else

	double exp(x)			/* wrapper exp */

	double x;

#endif

{

#ifdef _IEEE_LIBM

	return __ieee754_exp(x);

#else

	double z;

	z = __ieee754_exp(x);

	if(_LIB_VERSION == _IEEE_) return z;

	if(finite(x)) {

	    if(x>o_threshold)

	        return __kernel_standard(x,x,6); /* exp overflow */

	    else if(x<u_threshold)

	        return __kernel_standard(x,x,7); /* exp underflow */

	} 

	return z;

#endif

}