SystemSolver Class Reference

#include <SystemSolver.h>

List of all members.

Public Member Functions

SystemSolver ()
virtual ~SystemSolver ()

Static Public Member Functions

void luDecompose (real **a, int n, int *index, real *tempVector)
void luSubstitute (real **a, int n, int *index, real *b)
void svDecompose (real **a, int n, real *w, real **v, real *tempVector)
void svSubstitute (real **u, int n, real *w, real **v, real *b, real *tempVector)

Detailed Description

Functions for solving linear systems of equations. After Numerical Recipes (Press et al.)

Definition at line 12 of file SystemSolver.h.

Constructor & Destructor Documentation

SystemSolver::SystemSolver ( )

Definition at line 12 of file SystemSolver.cpp.

SystemSolver::~SystemSolver ( ) [virtual]

Definition at line 15 of file SystemSolver.cpp.

Member Function Documentation

void SystemSolver::luDecompose ( real ** a,

int n,

int * index,

real * tempVector

) [static]

Given a square matrix a of dimension n, the routine replaces it by the LU decomposition of a rowwise permutation of itself. The original a matrix is destroyed and replaced with the output. index[0..n-1] is an output vector that records the row permutation. tempVector is a temporary vector, it may be preallocated to a size at least n.
Definition at line 18 of file SystemSolver.cpp.
References real.

void SystemSolver::luSubstitute ( real ** a,

int n,

int * index,

real * b

) [static]

Solves the set of equations a x=b. a should previously be decomposed with luDecompose. index is the vector provided by luDecompose. b is destroyed and replaced with the solution vector.
Definition at line 66 of file SystemSolver.cpp.
References real.

void SystemSolver::svDecompose ( real ** a,

int n,

real * w,

real ** v,

real * tempVector

) [static]

Singular value decomposition of square matrix a of dimension n as u w vT. The data in the original matrix is destroyed, and is replaced with u.
Definition at line 86 of file SystemSolver.cpp.
References MathTools::max(), MathTools::modulus(), real, and MathTools::setSign().
Referenced by ContactSolver::driveToZero().

void SystemSolver::svSubstitute ( real ** u,

int n,

real * w,

real ** v,

real * b,

real * tempVector

) [static]

Solves the set of equations u w vT x=b. u, w, v should previously be generated with svDecompose. w is replaced with the solution vector.
Definition at line 262 of file SystemSolver.cpp.
References real.
Referenced by ContactSolver::driveToZero().

The documentation for this class was generated from the following files:

Thyrix homepage • Users' guide