👉 In mathematics, a subnormal number is a number that can be expressed as a difference of two squares. Specifically, if n is a natural number, then a subnormal number is defined by the inequality
n = (a^2 + b^2) - 2ab
where a and b are integers.
For example, 3 is a subnormal number because it can be expressed as a difference of two squares: 3 = 1^2 - 4
0.