Get the integral part without fractional digits (aka "trunc") GARROW_ROUND_TOWARDS_INFINITY, Round negative values with
GARROW_ROUND_MODE_DOWN rule and positive values with UP rule (aka "away from zero") GARROW_ROUND_HALF_DOWN,
Round ties with GARROW_ROUND_MODE_DOWN rule (also called "round half towards negative infinity") GARROW_ROUND_HALF_UP
, Round ties with GARROW_ROUND_MODE_UP rule (also called "round half towards positive infinity")
GARROW_ROUND_HALF_TOWARDS_ZERO, Round ties with GARROW_ROUND_MODE_TOWARDS_ZERO rule (also called "round half away from
infinity") GARROW_ROUND_HALF_TOWARDS_INFINITY, Round ties with GARROW_ROUND_MODE_TOWARDS_INFINITY rule (also called "round
half away from zero") GARROW_ROUND_HALF_TO_EVEN, Round ties to nearest even integer GARROW_ROUND_HALF_TO_ODD,
Round ties to nearest odd integer