code: public T minus( double b ) {
          T ret = createLike();
          ops.minus(mat,b,ret.mat);
          return ret;
      }
docs: <p>
  Returns the result of matrix-double subtraction:<br>
  <br>
  c = a - b <br>
  <br>
  where c is the returned matrix, a is this matrix, and b is the passed in double.
  </p>
  
  @see CommonOps_DDRM#subtract(DMatrixD1, double , DMatrixD1)
  
  @param b Value subtracted from each element
  
  @return The results of this operation.