OptiVec: MF

MF_LUinv

MD_LUinv

ME_LUinv

MCF_LUinv

MCD_LUinv

MCE_LUinv

MCF_LUinv

MCD_LUinv

MCE_LUinv

MFb_LUinv

MDb_LUinv

MEb_LUinv

MCFb_LUinv

MCDb_LUinv

MCEb_LUinv

MFb_LUinv_sizeBuf

MDb_LUinv_sizeBuf

MEb_LUinv_sizeBuf

MCFb_LUinv_sizeBuf

MCDb_LUinv_sizeBuf

MCEb_LUinv_sizeBuf

Function

invert a matrix already decomposed into LU form

Syntax C/C++	#include <MFstd.h> void MF_LUinv( fMatrix MInv, fMatrix MLU, uiVector Ind, ui len ); void MFb_LUinv( fMatrix MInv, fMatrix MLU, uiVector Ind, ui len, fVector Buf ); ui MFb_LUinv_sizeBuf( ui len );
C++ MatObj	#include <OptiVec.h> void matrix<T>::LUinv( const matrix<T>& MLU, const vector<ui>& Ind ); void matrix<T>::b_LUinv( const matrix<T>& MLU, const vector<ui>& Ind ); ui matrix<T>::b_LUinv_sizeBuf();
Pascal/Delphi	uses MFstd; procedure MF_LUinv( MInv, MLU:fMatrix; Ind:uiVector; len:UIntSize ); procedure MFb_LUinv( MInv, MLU:fMatrix; Ind:uiVector; len:UIntSize; Buf:fVector ); function MFb_LUinv_sizeBuf( len:UIntSize ):UIntSize;

Description

MF_LUinv inverts a matrix already decomposed into LU form. Along with the matrix MLU, its permutation indices are needed in the vector Ind as output by MF_LUdecompose.

This function needs buffer memory. The "normal" versions (prefixes MF_, MCF_ etc.) allocate it themselves, whereas the version with the prefixes MFb_, MCFb_ etc. take a vector Buf as an additional argument. The required size of Buf is given by MFb_inv_sizeBuf (in terms of elements of the respective data type).