Subsections

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

##
Inverse

### Library

Non_linear

### Description

This block computes . The input (output) size is determined by the context

### 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: invblk4

### Interfacing function

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

### Computational function (type 4)

    #include "scicos_block.h"
    #include <stdio.h>

    void invblk4(scicos_block *block,int flag)
    {
      /* Copyright INRIA

      Scicos block simulator
      Outputs the inverse of the input */

      int i;
      double ww;
      if (flag == 6){
        for(i=0;i< block->insz[0];i++){
          ww=block->inptr[0][i];
          if (ww != 0.0)
    	block->outptr[0][i]=1.0/ww;
        }
      }
      if (flag == 1){
        for(i=0;i< block->insz[0];i++){
          ww=block->inptr[0][i];
          if (ww != 0.0)
    	block->outptr[0][i]=1.0/ww;
          else{
    	set_block_error(-2);
    	return;
          }
        }
      }
    }