/ROUNDING_MODE=option
     /ROUNDING_MODE=NEAREST (D)

  For /FLOAT=IEEE_MODE, the /ROUNDING_MODE qualifier lets you select
  one of the following IEEE rounding modes:

   o  NEAREST (default)

   o  DYNAMIC

   o  MINUS_INFINITY

   o  CHOPPED

  For /FLOAT=G_FLOAT or /FLOAT=D_FLOAT, rounding defaults to
  /ROUNDING_MODE=NEAREST, with no other choice of rounding mode.