C++ 的一些免费库

• MTL, the Matrix Template Library. Dense and sparse matrices and vectors; banded, symmetric, triangular matrices; basic algorithms. C++.

           矩阵模版库，紧密和稀疏矩阵、矢量，带状，对称、三角矩阵，基本算法（C++语言）

• uBLAS, BLAS in C++ with expression templates.

            表达式模版形式的 C++中的BLAS ，

• tvmet, a C++ library for "tiny" vectors and matrices with expression templates.

            小型矢量和矩阵的表达式模版

• GMM++, generic C++ template library for sparse, dense and skyline matrices, with solvers from ITL.
• MET, a C++ matrix library with expression templates, which eliminates the overhead of overloaded operators.
• SL++, the Scientific Library project. Will provide matrices, random numbers, complex, quaternions, plotting, and FFTs. C++.

           科学计算库，提供矩阵、随机数、复数、四元数，快速复利叶变换（C++语言）

• Seldon, C++ library for linear algebra with BLAS interface. Many matrix types (sparse, symmetric, hermitian, etc.) are supported.

            BLAS 线性代数接口，支持 稀疏，对称，共轭矩阵

• ALP, linear and polynomial algebra. Vectors, matrices, polynomials.
• SVMT: E. Robert Tisdale's proposal for a standard C++ Scalar, Vector, Matrix and Tensor Class Library (with implementation). Note: this is a proposal, not an official standard.
• GNUSSL [ftp only], the GNU Scientific Software Library. Linear algebra and arrays. C++.
• CPPLapack, C++ wrapper for BLAS and LAPACK.
• Lapack++, C++ wrapper for BLAS and LAPACK.
• IML++ A C++ template library for numerical iterative methods.
• MV++ Numerical Matrix/Vector Classes in C++
• SparseLib++ A library for sparse matrix computations, including the Sparse BLAS (Basic Linear Algebra Subprograms). C++.
• ISIS++, an object-oriented framework for solving sparse linear systems of equations. C++.
• ARPACK++, a C++ template library for solving large-scale standard and generalized eigenvalue problems.
• The Template Numerical Toolkit (TNT) for linear algebra is a successor to the Lapack++, Sparselib++, IML++, and MV++ packages. Its goal is to integrate these ideas into a generic algorithmic library, supporting generic user-defined data types, and increasing its functionality. C++.
• LinAlg, basic linear algebra and optimization classes. C++.
• CAM C++ Class Library (Matrix, vector, and graphics classes)
• Newmat, a C++ matrix library (docs, download)
• CLHEP includes matrix classes, random number generators for the High Energy Physics (HEP) community. C++.
• BPKIT, Block Preconditioning Toolkit for iterative solution of linear systems. Callable from C++, C, or FORTRAN.

• POOMA II framework for scientific computing on sequential and parallel computers. Provides parallel arrays; fields, meshes, particles to come in version 2.1 (June 1999). C++.
• The Blitz++ class library: Array and Vector classes which rival Fortran's performance. C++.
• The AIPS++ Array and Image Classes (Astronomical Information Processing System). C++.
• Daixtrose, a general-purpose expression template engine.
• PETE, an expression templates library -- add expression templates to your own array class.
• SCTL (BlueSail), C++, arrays, matrics, vectors, sparse, rotations.  
• VIGRA, generic computer vision/image processing library.
• CPPIMA A C++ image processing library
• LIMP, Large Image Manipulation Program
• Image Restoration and Inpainting, C++ library for image restoration.
• valarray<Troy> [ftp only], approximation of the valarray<T> class described in Ch. 26 of the ANSI/ISO C++ Standard. Uses expression templates for efficient evaluation.
• Image Understanding Environment (IUE), a DARPA project. C++.
• WAILI, a wavelet transform library in C++.

• PDP++, a neural-network simulation system written in C++
• EO -- Evolutionary Computation Framework
• CONICAL, C++ classes for building Neural Networks
• GALib, a C++ library for genetic algorithms
• Xelopes data mining library (Java, C++, C#)
• MLC++, Machine learning algorithms and data mining.

• QC++, quantum chemistry software in C++, supporting MNDO, AM1 and PM3 models.
• FTensor, C++ class library for tensors.
• GluCat, Clifford algebra template library.
• Computational Thermodynamics Library
• Tech-X has made available C++ libraries related to particle accelerator design.

• NTL, arbitrary length integers, vectors/matrices/polynomials over integers and over finite fields.
• EXTNUM, version of double which has the same number of mantissa bits as IEEE 754, but extends the exponent to have range from 10^^-646456993 to 10^^646456992.
• CLN, an extensive number library. Arbitrary precision integer, float, rational, polynomials, complex, modular integers, transcendental functions, assembly language kernels for some CPUs.
• MUNTL, Multipreci