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BIGSOM_f
Scalar or vector Addition/Soustraction
Block Screenshot
Contents
Description
This block performs addition or soustraction on its scalar or vector inputs.The user can adjust the gain for each input with the parameter Inputs ports signs/gain. The behavior of the block is summarized in the following table :
| Number of inputs | Operation | Remarks |
| One | y = k*u | k is the scalar value in Inputs ports signs/gain parameter. The block has the behavior of a gain. |
| Two or more | y = k[1]*u1+k[2]*u2+...+k[n]*uN | k is the vector value write in Inputs ports signs/gain parameter. To subtract an input ui, set a negative value in k[i]. |
Parameters
Inputs ports signs/gain
Set sign and a gain for each inputs.
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
- 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: sum
Example
Interfacing function
SCI/modules/scicos_blocks/macros/Linear/BIGSOM_f.sci
Computational function
SCI/modules/scicos_blocks/src/c/sum.c (Type 2)
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| << ABS_VALUE | Mathoperations_pal | COSBLK_f >> |