File: edgetrig.c

package info (click to toggle)
scilab 4.0-12
  • links: PTS
  • area: non-free
  • in suites: etch, etch-m68k
  • size: 100,640 kB
  • ctags: 57,333
  • sloc: ansic: 377,889; fortran: 242,862; xml: 179,819; tcl: 42,062; sh: 10,593; ml: 9,441; makefile: 4,377; cpp: 1,354; java: 621; csh: 260; yacc: 247; perl: 130; lex: 126; asm: 72; lisp: 30
file content (36 lines) | stat: -rw-r--r-- 791 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
 
#include "scicos_block.h"
#include <math.h>

#if WIN32
extern void sciprint();
#endif

void edgetrig(scicos_block *block,int flag)
{
  double z= block->z[0],u=block->inptr[0][0];
  if(flag==2||flag==6){
    block->z[0]=u;
  }else if(flag==1){
    if(block->ipar[0]!=0){
      z=z*block->ipar[0];
      u=u*block->ipar[0];
      if(((z<=0)&(u>0))||((z<0)&(u>=0))) {
	block->outptr[0][0]=1.;
      }else{
	block->outptr[0][0]=0.;
      }
    } else{ /* rising and falling edge */
      if(((z<=0)&(u>0))||((z<0)&(u>=0))||((z>0)&(u<=0))||((z>=0)&(u<0))){
	block->outptr[0][0]=1.;
      }else{
	block->outptr[0][0]=0.;
      }
    }
  }else if (flag==4) {
    if (block->ng>0){
      set_block_error(-1);
      sciprint("Trigger block must have discrete time input.");
      return;
    }
  }
}