Un naufragio personal

Ángel Ortega

Kahan summation algorithm

Summary:

In numerical analysis, the Kahan summation algorithm, also known as compensated summation, significantly reduces the numerical error in the total obtained by adding a sequence of finite-precision floating-point numbers, compared to the obvious approach. This is done by keeping a separate running compensation (a variable to accumulate small errors).

https://en.wikipedia.org/wiki/Kahan_summation_algorithm