{{Portal, Free and open-source software The Template Numerical Toolkit (or TNT) is a

software library In computing, a library is a collection of resources that can be leveraged during software development to implement a computer program. Commonly, a library consists of executable code such as compiled functions and classes, or a library can ...

for manipulating vectors and

matrices Matrix (: matrices or matrixes) or MATRIX may refer to: Science and mathematics * Matrix (mathematics), a rectangular array of numbers, symbols or expressions * Matrix (logic), part of a formula in prenex normal form * Matrix (biology), the ...

in C++ created by the U.S.

National Institute of Standards and Technology The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness. NIST's activities are organized into Outline of p ...

. TNT provides the fundamental linear algebra operations (for example,

matrix multiplication In mathematics, specifically in linear algebra, matrix multiplication is a binary operation that produces a matrix (mathematics), matrix from two matrices. For matrix multiplication, the number of columns in the first matrix must be equal to the n ...

). TNT is analogous to the

BLAS Blas is mainly a Spanish given name and surname, related to Blaise. It may refer to Places *Piz Blas, mountain in Switzerland * San Blas (disambiguation) People * Ricardo Blas Jr. (born 1986) Judo athlete from Guam * Blas Antonio Sáenz (fl. 18 ...

library used by

LAPACK LAPACK ("Linear Algebra Package") is a standard software library for numerical linear algebra. It provides routines for solving systems of linear equations and linear least squares, eigenvalue problems, and singular value decomposition. It als ...

. Higher level algorithms, such as

LU decomposition In numerical analysis and linear algebra, lower–upper (LU) decomposition or factorization factors a matrix as the product of a lower triangular matrix and an upper triangular matrix (see matrix multiplication and matrix decomposition). The produ ...

and

singular value decomposition In linear algebra, the singular value decomposition (SVD) is a Matrix decomposition, factorization of a real number, real or complex number, complex matrix (mathematics), matrix into a rotation, followed by a rescaling followed by another rota ...

, are provided by

JAMA ''JAMA'' (''The Journal of the American Medical Association'') is a peer-reviewed medical journal published 48 times a year by the American Medical Association. It publishes original research, reviews, and editorials covering all aspects of b ...

, also developed at NIST, which uses TNT. The major features of TNT are: * All classes are template classes and therefore work with float, double, or other user-defined number types. * Matrices can be stored in row-major order or column-major order for Fortran compatibility. * The library is simply a collection of header files, and therefore does not need to be independently compiled. * Some support for

sparse matrix In numerical analysis and scientific computing, a sparse matrix or sparse array is a matrix in which most of the elements are zero. There is no strict definition regarding the proportion of zero-value elements for a matrix to qualify as sparse ...

storage is provided. * The

source code In computing, source code, or simply code or source, is a plain text computer program written in a programming language. A programmer writes the human readable source code to control the behavior of a computer. Since a computer, at base, only ...

is in the

public domain The public domain (PD) consists of all the creative work to which no Exclusive exclusive intellectual property rights apply. Those rights may have expired, been forfeited, expressly Waiver, waived, or may be inapplicable. Because no one holds ...

. TNT is mature, and NIST classifies its development status a
active maintenance
The principal designer of TNT is Roldan Pozo.

External links

Template Numerical Toolkit homepage
at NIST C++ numerical libraries Free mathematics software Free software programmed in C++ Public-domain software with source code

See also

External links