float-cmp

Documentation is available at https://mikedilger.github.io/float-cmp

float-cmp defines traits for approximate floating point comparison, including ApproxEq, ApproxOrd, and Ulps, where the caller specifies the number of adjacent floating point representations (called ulps) that are allowed between two comparands which are to be considered equal if they are within that distance of each other.

For more information about floating point comparison and many other suprising facts and oddities about floating point numbers, please refer to the following excellent website: https://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/