DIM (number, number)

  Class:  Elemental function - Generic

  Returns the value of the first argument minus the minimum (MIN) of
  the two arguments.

  +------+----------+----------+------------+-------------+
  | Args | Generic  | Specific |  Argument  | Result Type |
  +------+----------+----------+------------+-------------+
  |   2  |          |   --     | INTEGER*1  | INTEGER*1   |
  |      |          | IIDIM    | INTEGER*2  | INTEGER*2   |
  |      |see note  | IDIM     | INTEGER*4  | INTEGER*4   |
  |      |          | KIDIM    | INTEGER*8  | INTEGER*8   |
  |      |          | DIM      | REAL*4     | REAL*4      |
  |      |          | DDIM     | REAL*8     | REAL*8      |
  |      |          | QDIM     | REAL*16    | REAL*16     |
  +------+----------+----------+------------+-------------+

  NOTE: Or JIDIM