ApplyLU (FUN)ΒΆ

FUNCTION ApplyLU : ResultCode

Applies an LU decomposition of a system of linear equations LU*X = B, solving for X. The matrix LU together with the column permutation padiPCol is assumed to be the result of DecomposeLU.

InOut:

Scope

Name

Type

Comment

Return

ApplyLU

ResultCode

Inout

X

Matrix

The result matrix, must be a n x p matrix

Inout Const

LU

Matrix

The LU matrix, output of DecomposeLU

B

Matrix

The right-hand side of the equation, must be a n x p matrix

Input

padiPCol

POINTER TO ARRAY [0..0] OF DINT

The permutation of the columns, pointer to an array of at least n elements.

padZ

POINTER TO ARRAY [0..0] OF LREAL

Pointer to an array with at least n elements