Twofolds in C and C++

TL;DR

This paper introduces twofolds arithmetic in C and C++, providing interfaces and an implementation to improve floating-point accuracy tracking in high-performance computing, with easy-to-use coding and demonstrated effectiveness.

Contribution

It presents new C and C++ interfaces and an implementation for twofolds arithmetic, enhancing accuracy tracking in floating-point computations.

Findings

Plain C enables high-performance twofolds arithmetic

C++ interface simplifies coding with twofolds

Testing shows improved accuracy in computations

Abstract

Here I propose C and C++ interfaces and experimental implementation for twofolds arithmetic. I introduce twofolds in my previous article entitled "Twofold fast arithmetic" for tracking floating-point inaccuracy. Testing shows, plain C enables high-performance computing with twofolds. C++ interface enables coding as easily as ordinary floating-point numbers. My goal is convincing you to try twofolds; I think assuring accuracy of math computations is worth its cost. Code and use examples available at my web site, references inside.