Necomi is a C++ template library for multidimensional arrays.

numeric facilities for C++ 14; dual numbers, dual quaternions, constrained numbers, intervals

The Casimir Effect in the plane-sphere geometry.

Boost numerical data type for real numbers representation

Numerary is open source Scientific Library that contains many numerical methods.

Boost numerical data type for real numbers representation using range arithmetic.

Collection of C++ based algorithms on numerics, statistics, control, reinforcement learning, machine learning and robotics

C++ implementation of the monotonic runs method.

The mathematical ALGLIB library for C++ with CMake support.

Generic library for the implementation of Markov Chain Monte Carlo simulations.

C++ Simulation & Visualization

libfxd is a fixed-point library for C++20.

This package is designed to solve first order Ordinary Differential Equaitons (ODE) numerically in C++ with post processing in python.

Library of arbitrarily large integer

SG⁺⁺ – the numerical library for Sparse Grids in all their variants.

Blitz++ Multi-Dimensional Array Library for C++

2d and 3d panelmethod to compute potential flow

High Order Geometric Multigrid for planes in curvilinear coordinates

C++11 library for double-double (emulated quad precision) arithmetic