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Math and Calculations

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Cryptography  (12)

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ArciMath BigDecimal - Fast and improved BigDecimal class. [Commercial/Free].

AutoAbacus - An equation solving library that finds solutions to equation sets. A set of equations can be passed in as text, while AutoAbacus attempts to find a solution that satisfies all constraints. [Commercial, trial version].

Colt - High performance scientific and technical computing data structures and methods. (Open Source, Attribution).

Decimal Arithmetic for Java - Improved BigDecimal class from IBM. [Open source].

FPLib - A small Java class that implements methods to perform arithmetic operations on 16:16 fixed-point numbers. [Open source, MIT license].

Java Numerics - Working group that offers presentation, news, and libraries related to numerical computing..

JeksParser - Parses and computes expressions or functions primarily for use in spreadsheet applications such as the example provided. [Beta Evaluation].

JEP - Java Mathematical Expression Parser - Java classes for parsing and evaluating mathematical expressions. Supports multiple variables and user-defined functions. [Open source, GPL or commercial].

JEPLite - A light-weighted (re)implementation of the Java Expression Parser (jep.sourceforge.net). The intention is to strip some of its not-so-often-used features, and thus speeding the rest. Includes expression optimizer. [Open source, GPL].

JFormula - A Java library for evaluating mathematical expression. It is compatible with the JDK 1.1 and later. [Shareware].

JGraphT - A class library that provides mathematical graph-theory objects and algorithms. JGraphT supports a rich gallery of graphs and is designed to be powerful, extensible and easy to use. [Open source, LGPL].

JMathTools - A mathematical Java toolbox designed to be easily used and modified for scientific software engineering. [Open source, BSD License].

JMatLink - Connects Java and MATLAB. Native methods make it possible to use MATLAB's computational engine inside your own java applications, applets and servlets. [Freeware, source available].

JMP - Sparse matrix library - A library for sparse matrix computations. Includes a sparse BLAS, many iterative solvers for different problems, sparse matrix I/O and parallelization. [Open source, GPL].

Mantissa (Mathematical Algorithms for Numerical Tasks In Space System Applications) - A class library devoted to simulation, including an ODE solving package, as well as least square estimators, solvers, polynomials, basic statistics features. [Open source, BSD-like].

Math Parser - Package to parse and evaluate mathematical expressions at runtime. [Commercial].

Mathematical expression parser library for Java [GPL] - Library to parse mathematical expressions like x^2+sin(x)-root(1/3*x). The following mathematical operations are supported: + - * / ( ) ^ root log sin cos tan asin acos atan. [Open source, GPL].

Mersenne Twister Pseudo Random Number Generator Classes - Offers multiple replacement implementations for java.util.Random. [Open Source].

Significant Figures - Handles parsing, rounding, and displaying numbers for scientific applications..

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