SIGNUM

Block Screenshot

Contents

• Sign

• • Palette

  • Description

  • Dialog box

  • Default properties

  • Interfacing function

  • Computational function

  • Authors

Palette

• Math operations palette

Description

The block output is a vector of the signs of the elements of the input vector. For each input vector's element, the output vector's element is:

• 1 when the element is greater than zero.

• 0 when the element is equal to zero.

• -1 when the element is less than zero.

Dialog box

• use zero_crossing

  Select to enable zero crossing detection.

  Properties : Type 'vec' of size 1

Default properties

• always active: no

• direct-feedthrough: yes

• zero-crossing: yes

• mode: yes

• 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: signum

Interfacing function

• SCI/modules/scicos_blocks/macros/NonLinear/SIGNUM.sci

Computational function

• SCI/modules/scicos_blocks/src/c/signum.c (Type 4)

Authors

Ramine Nikoukhah - INRIA