Controls handling of arithmetic exceptions and rounding.
"up": round away from zero
"down" or "truncate": round towards zero (truncate)
"halfUp" or "default": round towards the nearest neighbor, unless both
neighbors are equidistant, in which case round away from zero.
"halfDown": round towards the nearest neighbor, unless both neighbors are
equidistant, in which case round towards zero.
"halfEven" or "banker": round towards the nearest neighbor, unless both
neighbors are equidistant, in which case round towards the even neighbor
(Banker’s rounding)
"ceiling" or "ceil": round towards positive infinity
Controls handling of arithmetic exceptions and rounding.