com.numericalmethod.suanshu.matrix.doubles.factorization.triangle
Interface LUDecomposition

All Known Implementing Classes:

Doolittle, GaussianElimination4SquareMatrix, LU

public interface LUDecomposition

All LU decomposition algorithms implement this interface.

Method Summary

LowerTriangularMatrix	L() Get a copy of the lower triangular matrix L as in P %*% A == L %*% U
PermutationMatrix	P() Get a copy of the permutation matrix P as in P %*% A == L %*% U
UpperTriangularMatrix	U() Get a copy of the upper triangular matrix U as in P %*% A == L %*% U

Method Detail

L

LowerTriangularMatrix L()

Get a copy of the lower triangular matrix L as in

P %*% A == L %*% U

Returns:

a copy of L

U

UpperTriangularMatrix U()

Get a copy of the upper triangular matrix U as in

P %*% A == L %*% U

Returns:

a copy of U

P

PermutationMatrix P()

Get a copy of the permutation matrix P as in

P %*% A == L %*% U

Returns:

a copy of P