choose_pivot_column()

bool FF_LUComputation::choose_pivot_column ( int lo, int hi, int & result )

private

Definition at line 35 of file fractionfreeLU.cpp.

{
  int r = -1;  // If this remains -1, then no better column was found
  int c = -1;
  for (int i = lo; i <= hi; i++)
    {
      int r1 = static_cast<int>(M->lead_row(i));
      if (r1 > r)
        {
          r = r1;
          c = i;
        }
    }
  if (r == -1) return false;
 
  result = c;
  return true;
}

References M, and result().

Referenced by calc().