Pow
Keywords: main

Subsections

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

##
Pow

### Library

Non_linear

### Description

This block realizes . The input and output port sizes are determined by the compiler according to the connected blocks port sizes.

### Dialog Box

Set uâ block parameters |
to the power of | 1.5

- to the power of:real scalar

### 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: powblk

### Interfacing function

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

### Computational function (type 0)

          subroutine powblk(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     rpar(1) is power
    c
          double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
          integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
          integer nipar,nu,ny

    c
    c
          if (nrpar.eq.1) then
             do 15 i=1,nu
                if(u(i).lt.0.d0) then
                   if (flag.ge.4) return
                   flag=-2
                   return
                elseif(u(i).eq.0.d0.and.rpar(1).le.0) then
                   if (flag.ge.4) return
                   flag=-2
                   return
                endif
                y(i)=u(i)**rpar(1)
     15      continue
          else
             do 25 i=1,nu
                if(ipar(1).le.0.and.u(i).eq.0.0d0) then
                   if (flag.ge.4) return
                   flag=-2
                   return
                endif
                y(i)=u(i)**ipar(1)
     25      continue
          endif

          end