The Lapack class

(PECL lapack >= 0.1.0)

Введение

LAPACK is written in Fortran 90 and provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. This extension wraps the LAPACKE C bindings to allow access to several processes exposed by the library. Most functions work with arrays of arrays, representing rectangular matrices in row major order - so a two by two matrix [1 2; 3 4] would be array(array(1, 2), array(3, 4)).

All of the functions are called statically, for example $eig = Lapack::eigenvalues($a);

Обзор классов

Lapack {
/* Методы */
public static array eigenValues ( array $a [, array $left [, array $right ]] )
public static array identity ( int $n )
public static array leastSquaresByFactorisation ( array $a , array $b )
public static array leastSquaresBySVD ( array $a , array $b )
public static array pseudoInverse ( array $a )
public static array singularValues ( array $a )
public static array solveLinearEquation ( array $a , array $b )
}

Содержание

• Lapack::eigenValues — This function returns the eigenvalues for a given square matrix
• Lapack::identity — Return an identity matrix
• Lapack::leastSquaresByFactorisation — Calculate the linear least squares solution of a matrix using QR factorisation
• Lapack::leastSquaresBySVD — Solve the linear least squares problem, using SVD
• Lapack::pseudoInverse — Calculate the inverse of a matrix
• Lapack::singularValues — Calculated the singular values of a matrix
• Lapack::solveLinearEquation — Solve a system of linear equations

User Contributed Notes

There are no user contributed notes for this page.

Описание класса lapack, примеры использования класса lapack.

Смотрите также:
Описание на ru2.php.net
Описание на php.ru