Scicos Block
fr - eng

##
Mathematical expression

### Contents

- Mathematical expression
  - Palette
  - Description
  - Dialog box
  - Default properties
  - Interfacing function
  - Computational function
  - Authors

### Palette

- Non_linear - Non-Linear palette

### Description

The Expression block applies the specified Scilab functions to its input.

### Dialog box

- number of inputs
  Block input can be a scalar or vector.
  Properties : Type 'vec' of size 1

- scilab expression
  The Scilab expression applied to the input.
  Properties : Type 'vec' of size 1

- 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
  - port 2 : 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: evaluate_expr

### Interfacing function

- SCI/macros/scicos_blocks/Misc/EXPRESSION.sci [view code]

### Computational function

- SCI/routines/scicos/evaluate_expr.c (Type 4) [view code]

### Authors

Ramine Nikoukhah INRIA