benchmarks/median/median.c

   1 //**************************************************************************
   2 // Median filter (c version)
   3 //--------------------------------------------------------------------------
   4
   5 void median( int n, int input[], int results[] )
   6 {
   7   int A, B, C, i;
   8
   9   // Zero the ends
  10   results[0]   = 0;
  11   results[n-1] = 0;
  12
  13   // Do the filter
  14   for ( i = 1; i < (n-1); i++ ) {
  15
  16     A = input[i-1];
  17     B = input[i];
  18     C = input[i+1];
  19
  20     if ( A < B ) {
  21       if ( B < C )
  22         results[i] = B;
  23       else if ( C < A )
  24         results[i] = A;
  25       else
  26         results[i] = C;
  27     }
  28
  29     else {
  30       if ( A < C )
  31         results[i] = A;
  32       else if ( C < B )
  33         results[i] = B;
  34       else
  35         results[i] = C;
  36     }
  37
  38   }
  39
  40 }