MATINV

Scicos Block
fr - eng

##
MATINV Matrix Inverse

### Contents

- MATINV Matrix Inverse
  - Palette
  - Description
  - Dialog box
  - Default properties
  - Interfacing function
  - Computational function
  - See also
  - Authors

### Palette

- Matrix - Matrix operation palette

### Description

The MATINV Block outputs the inverse of a square input matrix using the LU factorization. A warning message is printed if the input is badly scaled or nearly singular. The equivalent function of this block in Scilab is "inv".

### Dialog box

- Datatype(1=real double 2=Complex)
  It indicates the type of the output. It support only the two types double (1) and complex (2). If we input another entry in this label Scicos will print the message "Datatype is not supported".
  Properties : Type 'vec' of size 1.

### Default properties

- always active: no
- direct-feedthrough: yes
- zero-crossing: no
- mode: no
- regular inputs:
  - port 1 : size [-1,-1] / type 1
- regular outputs:
  - port 1 : size [-1,-1] / type 1
- number/sizes of activation inputs: 0
- number/sizes of activation outputs: 0
- continuous-time state: no
- discrete-time state: no
- object discrete-time state: no
- name of computational function: mat_inv

### Interfacing function

- SCI/macros/scicos_blocks/MatrixOp/MATINV.sci [view code]

### Computational function

- SCI/routines/scicos/mat_inv.c [view code]
- SCI/routines/scicos/matz_inv.c [view code]

### See also

- MATLU - MATLU LU Factorization (Scicos Block)
- MATPINV - MATPINV Matrix PseudoInverse (Scicos Block)

### Authors

Fady NASSIF INRIA