SIGNUM

Sign

Block Screenshot

Contents

• Sign +

  • Palette
  • Description
  • Dialog box
  • Default properties
  • Interfacing function
  • Computational function

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)