/**
* Returns the remainder of the division of the specified two arguments.
*
* @param x the dividend.
* @param y the divisor.
* @return <code>x - round(x / y) * y</code>
*/
public static double rem(double x, double y) {
double tmp = x / y;
if (MathLib.abs(tmp) <= Long.MAX_VALUE) return x - MathLib.round(tmp) * y;
else return NaN;
}
