ToolGood.Algorithm is a powerful, lightweight, Excel formula compatible algorithm library aimed at improving developers’ productivity in different business scenes. ToolGood.Algorithm是一个功能强大、轻量级、兼容Excel公式的算法类库，旨在提高开发人员在不同业务场景中的生产力。

An arbitrary-precision decimal (base 10) floating-point number class. Over 2.5 million downloads on NuGet!

Comprehensive univariate polynomial class. All arithmetic performed symbolically. Some advanced features include: Arithmetic of polynomial rings over a finite field, the Tonelli-Shanks algorithm, GCD, exponentiation by squaring, irreducibility checking, modular arithmetic (obviously) and polynomials from roots.

Double-Double Arithmetic and Special Function Implements

Fixed float math arithmetic and geometric operations in Unity projects.

C# library for long numbers and RSA cryptosystem

RSA Cryptography implementation with C# OOP

A C# high-performance mathematical function compiler for efficient and fast calculation of function values of arbitrary complex single-line mathematical formulas at design and runtime.

A symbolic, multivariate integer polynomial arithmetic library.

Simple Arithmetic parser made with C#

BigFraction implementation using .NET BigInteger class.

Mathematical trainer built with C#, XAML and Uno Platform.

A complex polynomial arithmetic class..

Operaciones Matemáticas implementadas en BigNum y un generador de Expresiones Matemáticas

FixedMathSharp: A high-precision, deterministic fixed-point math library for .NET. Ideal for simulations, games, and physics engines requiring reliable arithmetic without floating-point inaccuracies.

A generic Vector numeric type. Supports: Scalar arithmetic, vector arithmetic, square root, dot product, normal, reflection, distance, lerp, sum of squares and cosine similarity.

ConstructiveReals implement a kind of arbitrary precision arithmetic that increases precision automatically

Precision Test Tools

Library for working with machine arithmetic on C# .NET Core.