# dividingFullWidth(_:) Returns a tuple containing the quotient and remainder obtained by dividing the given value by this value. ``` func dividingFullWidth(_ dividend: (high: Self, low: Self.Magnitude)) -> (quotient: Self, remainder: Self) ``` ## Parameters `dividend` A tuple containing the high and low parts of a double-width integer. ## Return Value A tuple containing the quotient and remainder obtained by dividing `dividend` by this value. ## Discussion The resulting quotient must be representable within the bounds of the type. If the quotient is too large to represent in the type, a runtime error may occur. The following example divides a value that is too large to be represented using a single `Int` instance by another `Int` value. Because the quotient is representable as an `Int`, the division succeeds. ``` // 'dividend' represents the value 0x506f70652053616e74612049494949 let dividend = (22640526660490081, 7959093232766896457 as UInt) let divisor = 2241543570477705381 let (quotient, remainder) = divisor.dividingFullWidth(dividend) // quotient == 186319822866995413 // remainder == 0 ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)