Generic Initializer

init(_:)

Creates an integer from the given floating-point value, rounding toward zero. Any fractional part of the value passed as source is removed.

Declaration

init<T>(_ source: T) where T : BinaryFloatingPoint

Parameters

source

A floating-point value to convert to an integer. source must be representable in this type after rounding toward zero.

Discussion

let x = Int(21.5)
// x == 21
let y = Int(-21.5)
// y == -21

If source is outside the bounds of this type after rounding toward zero, a runtime error may occur.

let z = UInt(-21.5)
// Error: ...outside the representable range