MATDET

Block Screenshot

Contents

• Description
• Parameters
• Default properties
• Example
• Interfacing function
• Computational function
• See also

Description

The MATDET outputs the determinant of a square input matrix. If the input is:

The equivalent function of MATDET in Scilab is det.

Parameters

• 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 xcos 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_det

Example

U = [1 0 63;2 -2 5;9 9 4]
y = 2215

Determinant example: det([tan(x) 0 ; 0 cos(x)]) = sin(x)

Interfacing function

• SCI/modules/scicos_blocks/macros/MatrixOp/MATDET.sci

Computational function

• SCI/modules/scicos_blocks/src/c/mat_det.c
• SCI/modules/scicos_blocks/src/c/matz_det.c

See also

• MATINV — Matrix Inverse
• det — определитель квадратной матрицы