ISO/IEC TS 18661-4:2025Published

Programming languages, their environments, and system software interfaces — Floating-point extensions for C — Part 4: Supplementary functions

Langages de programmation, leurs environnements et interfaces du logiciel système — Extensions à virgule flottante pour C — Partie 4: Fonctions supplémentaires

Abstract / scope

This document specifies extensions to programming language C to include functions corresponding to operations specified and recommended in ISO/IEC 60559, but not supported in ISO/IEC 9899:2024 (also referred to as C23).

Life cycle

Replaces

ISO/IEC TS 18661-4:2015WithdrawnInformation Technology — Programming languages, their environments, and system software interfaces — Floating-point extensions for C — Part 4: Supplementary functionsTechnical Specification · Published 6 Oct 2015 · ISO/IEC JTC 1/SC 22