( --
d ) ( F:
r -- ) or
(
r --
d )
d is the double-cell signed-integer equivalent of the
integer portion of
r. The fractional portion of
r
is discarded. An ambiguous condition exists if the integer portion
of
r cannot be represented as a double-cell
signed integer.
Note:
Rounding the floating-point value prior to calling F>D
is advised, because F>D rounds towards zero.