Initializerswift 6.0.1Swift
init(exactly:)
Creates an integer from the given floating-point value, if it can be represented exactly.
init?(exactly source: Double) Parameters
- source
A floating-point value to convert to an integer.
If the value passed as source is not representable exactly, the result is nil. In the following example, the constant x is successfully created from a value of 21.0, while the attempt to initialize the constant y from 21.5 fails:
let x = Int(exactly: 21.0)
// x == Optional(21)
let y = Int(exactly: 21.5)
// y == nilOther members in extension
Types
struct SIMD16StorageStorage for a vector of 16 integers.
struct SIMD2StorageStorage for a vector of two integers.
struct SIMD32StorageStorage for a vector of 32 integers.
struct SIMD4StorageStorage for a vector of four integers.
struct SIMD64StorageStorage for a vector of 64 integers.
struct SIMD8StorageStorage for a vector of eight integers.
struct WordsA type that represents the words of this integer.
Typealiases
typealias IntegerLiteralTypeA type that represents an integer literal.
typealias MagnitudeA type that can represent the absolute value of any possible value of this type.
typealias SIMDMaskScalar
Type members
init(Double) Creates an integer from the given floating-point value, rounding toward zero.
init(Float) Creates an integer from the given floating-point value, rounding toward zero.
init(Float16) Creates an integer from the given floating-point value, rounding toward zero.
init(Unicode.Scalar) Construct with value
v.value.init(bitPattern: Int64) Creates a new instance with the same memory representation as the given value.
init?(exactly: Float) Creates an integer from the given floating-point value, if it can be represented exactly.
init?(exactly: Float16) Creates an integer from the given floating-point value, if it can be represented exactly.
init(from: any Decoder) throws static var bitWidth: IntThe number of bits used for the underlying binary representation of values of this type.
static func != (lhs: UInt64, rhs: UInt64) -> Bool static func % (lhs: UInt64, rhs: UInt64) -> UInt64 static func %= (lhs: inout UInt64, rhs: UInt64) static func & (lhs: UInt64, rhs: UInt64) -> UInt64 static func &<< (lhs: UInt64, rhs: UInt64) -> UInt64 static func &<<= (lhs: inout UInt64, rhs: UInt64) static func &= (lhs: inout UInt64, rhs: UInt64) static func &>> (lhs: UInt64, rhs: UInt64) -> UInt64 static func &>>= (lhs: inout UInt64, rhs: UInt64) static func * (lhs: UInt64, rhs: UInt64) -> UInt64 Multiplies two values and produces their product.
static func *= (lhs: inout UInt64, rhs: UInt64) Multiplies two values and stores the result in the left-hand-side variable.
static func + (lhs: UInt64, rhs: UInt64) -> UInt64 Adds two values and produces their sum.
static func += (lhs: inout UInt64, rhs: UInt64) Adds two values and stores the result in the left-hand-side variable.
static func - (lhs: UInt64, rhs: UInt64) -> UInt64 Subtracts one value from another and produces their difference.
static func -= (lhs: inout UInt64, rhs: UInt64) Subtracts the second value from the first and stores the difference in the left-hand-side variable.
static func / (lhs: UInt64, rhs: UInt64) -> UInt64 static func /= (lhs: inout UInt64, rhs: UInt64) static func < (lhs: UInt64, rhs: UInt64) -> Bool static func <= (lhs: UInt64, rhs: UInt64) -> Bool static func == (lhs: UInt64, rhs: UInt64) -> Bool static func > (lhs: UInt64, rhs: UInt64) -> Bool static func >= (lhs: UInt64, rhs: UInt64) -> Bool static func ^ (lhs: UInt64, rhs: UInt64) -> UInt64 static func ^= (lhs: inout UInt64, rhs: UInt64) static func | (lhs: UInt64, rhs: UInt64) -> UInt64 static func |= (lhs: inout UInt64, rhs: UInt64)
Instance members
var byteSwapped: UInt64var customMirror: MirrorA mirror that reflects the
UInt64instance.var leadingZeroBitCount: IntThe number of leading zeros in this value’s binary representation.
var nonzeroBitCount: Intvar trailingZeroBitCount: IntThe number of trailing zeros in this value’s binary representation.
var words: UInt64.WordsA collection containing the words of this value’s binary representation, in order from the least significant to most significant.
func addingReportingOverflow(UInt64) -> (partialValue: UInt64, overflow: Bool) func dividedReportingOverflow(by: UInt64) -> (partialValue: UInt64, overflow: Bool) func dividingFullWidth((high: UInt64, low: UInt64.Magnitude)) -> (quotient: UInt64, remainder: UInt64) Returns a tuple containing the quotient and remainder of dividing the given value by this value.
func encode(to: any Encoder) throws Encodes this value into the given encoder.
func hash(into: inout Hasher) Hashes the essential components of this value by feeding them into the given hasher.
func multipliedFullWidth(by: UInt64) -> (high: UInt64, low: UInt64.Magnitude) Returns a tuple containing the high and low parts of the result of multiplying this value by the given value.
func multipliedReportingOverflow(by: UInt64) -> (partialValue: UInt64, overflow: Bool) func remainderReportingOverflow(dividingBy: UInt64) -> (partialValue: UInt64, overflow: Bool) func signum() -> UInt64 func subtractingReportingOverflow(UInt64) -> (partialValue: UInt64, overflow: Bool)
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var customPlaygroundQuickLook: _PlaygroundQuickLookA custom playground Quick Look for the
UInt64instance.