Perform integer division of two FExprs, i.e.
x // y.
The modulus and integer division together satisfy the identity
x == (x // y) * y + (x % y) for all non-zero values of
y are multi-column expressions, then they must have the
same number of columns, and the
// operator will be applied to each
corresponding pair of columns. If either
y are single-column
while the other is multi-column, then the single-column expression
will be repeated to the same number of columns as its opponent.
The integer division operation can only be applied to integer columns.
The resulting column will have stype equal to the largest of the stypes
of both columns, but at least
The arguments must be either
FExprs, or expressions that can be
An expression that evaluates
x // y.