math.roundhalfdown
Available inall subroutines.
Rounds to nearest, ties towards negative infinity (also known as half down).
Return Value
If x
is math.NAN
, a NaN will be returned.
If x
is integral, ±0, x
itself is returned.
If x
is math.POS_INFINITY
or
math.NEG_INFINITY
, an infinity
of the same sign is returned.
Otherwise, the rounded value of x
is returned.