code: public static void removeZeros( DMatrixSparseCSC input , DMatrixSparseCSC  output , double tol ) {
          ImplCommonOps_DSCC.removeZeros(input,output,tol);
      }
docs: Copies all elements from input into output which are &gt; tol.
  @param input (Input) input matrix. Not modified.
  @param output (Output) Output matrix. Modified and shaped to match input.
  @param tol Tolerance for defining zero