result = NearlyEqual(x, y)
x and y and returns True if they are nearly equal. This function
is only useful for floating point values. The advantage of this function over Hollywood's
equality operator is that comparing floating point numbers using the equality operator can
lead to problems in case there are extremely minimal differences on the bit level, e.g. caused
by (de)serialization. That's why it's recommended to compare floating point numbers against
near equality instead of absolute equality for more reliability.
True if x and y are nearly equal, False otherwise