Quantization
Keywords: main

Subsections

- Library
- Description
- Dialog Box
- Default properties
- Interfacing function
- Computational function (type 0)

##
Quantization

### Library

Non_linear

### Description

This block outputs the quantization of the input according to a choice of methods:

1. Round method:

2. Truncation method:

3. Floor method:

4. Ceil method:

### Dialog Box

Set parameters |
Step | 0.1
Quantization Type (1-4) | 1

- Step:scalar, Quantization step
- Quantization Type : scalar with possible values 1,2,3 or 4
  1
    Round method
  2
    Truncation method
  3
    Floor method
  4
    Ceil method

### Default properties

- always active: no
- direct-feedthrough: yes
- zero-crossing: no
- mode: no
- number/sizes of inputs: 1 / -1
- number/sizes of outputs: 1 / -1
- number/sizes of activation inputs: 0 /
- number/sizes of activation outputs: 0 /
- continuous-time state: no
- discrete-time state: no
- name of computational function: qzrnd

### Interfacing function

`scilab/macros/scicos_blocks/nonlinear/QUANT_f.sci`

### Computational function (type 0)

          subroutine qzrnd(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
         &     rpar,nrpar,ipar,nipar,u,nu,y,ny)
    c     Copyright INRIA

    c     Scicos block simulator
    c
    c     Gives quantized signal by round method
    c     rpar(i) quantization step used for i input
    c
          double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
          integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
          integer nipar,nu,ny

          integer i
    c
          do 15 i=1,nu
             if (u(i).lt.0.0d0)then
                y(i)=rpar(i)*(ANINT(u(i)/rpar(i)+0.5d0)-0.5d0)
             else
                y(i)=rpar(i)*(ANINT(u(i)/rpar(i)-0.5d0)+0.5d0)
             endif
     15   continue
          return
          end