BlackScholes bench

function cnd(d)
{
        var A1 = 0.31938153;
        var A2 = -0.356563782;
        var A3 = 1.781477937;
        var A4 = -1.821255978;
        var A5 = 1.330274429;
        var RSQRT2PI = 0.3989422804;

        var K = 1.0 / (1.0 + 0.2316419 * Math.abs(d));

        var c = RSQRT2PI * Math.exp(-0.5 * d * d) * (K * (A1 + K * (A2 + K * (A3 + K * (A4 + K * A5)))));

        var ret;

        if (d > 0.0) {
                ret = 1.0 - c;
        } else {
                ret = c;
        }

        return ret;
}

function BlackScholes(S, X, T, R, V)
{
        var sqrtT = Math.sqrt(T);
        var d1 = (Math.log(S / X) + (R + 0.5 * V * V) * T) / (V * sqrtT);
        var d2 = d1 - V * sqrtT;

        var cnd_d1 = cnd(d1);
        var cnd_d2 = cnd(d2);

        var expRT = Math.exp(-1.0 * R * T);

        var retCall = S * cnd_d1 - X * expRT * cnd_d2;

        return retCall;

}

var i;

var S = 40.0;
var X = 50.0;
var T = 0.333;
var R = 0.08;
var V = 0.30;

var v;

var N = 10000000;
for (i = 0; i < N; i++) {
        v = BlackScholes(S, X, T, R, V);
}

print(v)