IsValuePowerOfTwo = function (value)
{
    return (value > 0 && (value & (value - 1)) === 0);
}
Tests the value and returns `true` if it is a power of two.

@function Phaser.Math.Pow2.IsValue
@since 3.0.0

@param {number} value - The value to check if it's a power of two.

@return {boolean} Returns `true` if `value` is a power of two, otherwise `false`.