Event select

Library

Events

Description

Special block similar to If-Then-Else. Input and output are synchronized. The incoming event is directed to one of the output event ports depending on the value of the regular input.

Dialog Box

Set ESELECT block parameters
number of output event ports	2
Inherit (1: no, 0: yes)	1
zero-crossing (0: no, 1: yes)	0

• number of output event ports: integer
• Inherit : 0 or 1; 0 means inheritance so the block has no input activation port
• zero-crossing : should zero-crossing be used if the block is continuously active.

Default properties

• always active: no
• direct-feedthrough: no
• zero-crossing: no
• mode: no
• number/sizes of inputs: 1 / 1
• number/sizes of outputs: 0 /
• number/sizes of activation inputs: 1 / 1
• number/sizes of activation outputs: 2 / 1 1
• continuous-time state: no
• discrete-time state: no
• name of computational function: eselect

Interfacing function

scilab/macros/scicos_blocks/branching/ESELECT_f.sci

Computational function (type -2)

      subroutine eselect(flag,nevprt,ntvec,rpar,nrpar,ipar,nipar,u,nu)
c     Scicos block simulator
c     if-then-else block
c     if event input exits from then or else clock ouputs based
c     on the sign of the unique input (if input>0 then  else )
c
c     Copyright INRIA
      double precision rpar(*),u(*)
      integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
      integer nipar,nu
c
      integer iu
c
      common /dbcos/ idb
c
      if(idb.eq.1) then
         write(6,'(''ifthel     t='',e10.3,'' flag='',i1)') t,flag
      endif
c
      iu=max(min(int(u(1)),ipar(1)),1)
      if(flag.eq.3) then
            ntvec=iu
      endif
      end