/ROUNDING_MODE
       /ROUNDING_MODE=option
       /ROUNDING_MODE=NEAREST (D)

    Lets you select an IEEE rounding mode if /FLOAT=IEEE_FLOAT is
    specified. The options are as follows:

    Option     Usage

    CHOPPED    Rounds toward 0.
    DYNAMIC    Sets the rounding mode for IEEE floating-point
               instructions dynamically, as determined from the
               contents of the floating-point control register.
    MINUS_     Rounds toward minus infinity.
    INFINITY
    NEAREST    Sets the normal rounding mode (unbiased round to
               nearest). This is the default.

    If you specify either /FLOAT=G_FLOAT or /FLOAT=D_FLOAT, then
    rounding defaults to /ROUNDING_MODE=NEAREST, with no other choice
    of rounding mode.