The fastest open-source C++17 optimization library for unconstrained nonlinear problems. Header-only, single dependency. Highest reliability, composable function expressions, unconstrained and constrained solvers.

Yet another C++ strings library implementation

Demo code accompanying the talk "Implementing memory locality optimizations in OpenFOAM based code"

crates.io: Differentiable expression templates in Rust.

General-purpose compile-time Expression Templates library for C++

Finite volume method library

Header-only C++23 lazy tensor library using expression templates and Deducing This (P0847) for zero-overhead AST evaluation, zero-copy broadcasting via strides, and native multidimensional subscript syntax.

a template based C++ short vector library with vectorized faithfully rounded elementary functions

A C++20 template library for symbolic mathematical expressions, derivatives, and equation systems with compile-time evaluation capabilities.

Template Numerical Library

a variable length C++ vector library using an OpenCL backend