benchmarks/median/median.c

   1 // See LICENSE for license details.
   2
   3 //**************************************************************************
   4 // Median filter (c version)
   5 //--------------------------------------------------------------------------
   6
   7 void median( int n, int input[], int results[] )
   8 {
   9   int A, B, C, i;
  10
  11   // Zero the ends
  12   results[0]   = 0;
  13   results[n-1] = 0;
  14
  15   // Do the filter
  16   for ( i = 1; i < (n-1); i++ ) {
  17
  18     A = input[i-1];
  19     B = input[i];
  20     C = input[i+1];
  21
  22     if ( A < B ) {
  23       if ( B < C )
  24         results[i] = B;
  25       else if ( C < A )
  26         results[i] = A;
  27       else
  28         results[i] = C;
  29     }
  30
  31     else {
  32       if ( A < C )
  33         results[i] = A;
  34       else if ( C < B )
  35         results[i] = B;
  36       else
  37         results[i] = C;
  38     }
  39
  40   }
  41
  42 }