Double

Citizens in Swift

Conformances

• protocol AdditiveArithmetic

  A type with values that support addition and subtraction.

• protocol BinaryFloatingPoint

  A radix-2 (binary) floating-point type.

• protocol CVarArg

  A type whose instances can be encoded, and appropriately passed, as elements of a C va_list.

• protocol Comparable

  A type that can be compared using the relational operators <, <=, >=, and >.

• protocol CustomDebugStringConvertible

  A type with a customized textual representation suitable for debugging purposes.

• protocol CustomReflectable

  A type that explicitly supplies its own mirror.

• protocol CustomStringConvertible

  A type with a customized textual representation.

• protocol Decodable

  A type that can decode itself from an external representation.

• protocol Encodable

  A type that can encode itself to an external representation.

• protocol Equatable

  A type that can be compared for value equality.

• protocol ExpressibleByFloatLiteral

  A type that can be initialized with a floating-point literal.

• protocol ExpressibleByIntegerLiteral

  A type that can be initialized with an integer literal.

• protocol FloatingPoint

  A floating-point numeric type.

• protocol Hashable

  A type that can be hashed into a Hasher to produce an integer hash value.

• protocol LosslessStringConvertible

  A type that can be represented as a string in a lossless, unambiguous way.

• protocol Numeric

  A type with values that support multiplication.

• protocol SIMDScalar

  A type that can be used as an element in a SIMD vector.

• protocol Sendable

  A type whose values can safely be passed across concurrency domains by copying.

• protocol SignedNumeric

  A numeric type with a negation operation.

• protocol Strideable

  A type representing continuous, one-dimensional values that can be offset and measured.

• protocol TextOutputStreamable

  A source of text-streaming operations.

Members

• init()
• init(Double)

  Creates a new instance initialized to the given value.

• init(Float)

  Creates a new instance that approximates the given value.

• init?(Substring)
• init?<S>(S)

  Creates a new instance from the given string.

• init(Int)
• init(Float16)

  Creates a new instance that approximates the given value.

• init(Float80)

  Creates a new instance that approximates the given value.

• init<Source>(Source)
• init(bitPattern: UInt64)

  Creates a new value with the given bit pattern.

• init?(exactly: Double)

  Creates a new instance initialized to the given value, if it can be represented without rounding.

• init?(exactly: Float)

  Creates a new instance initialized to the given value, if it can be represented without rounding.

• init?(exactly: Float16)

  Creates a new instance initialized to the given value, if it can be represented without rounding.

• init?(exactly: Float80)

  Creates a new instance initialized to the given value, if it can be represented without rounding.

• init?<Source>(exactly: Source)
• init(floatLiteral: Double)
• init(from: Decoder) throws

  Creates a new instance by decoding from the given decoder.

• init(integerLiteral: Int64)
• init(nan: Double.RawSignificand, signaling: Bool)

  Creates a NaN (“not a number”) value with the specified payload.

• init(sign: FloatingPointSign, exponent: Int, significand: Double)
• init(sign: FloatingPointSign, exponentBitPattern: UInt, significandBitPattern: UInt64)
• init(signOf: Double, magnitudeOf: Double)
• static var exponentBitCount: Int
• static var greatestFiniteMagnitude: Double
• static var infinity: Double
• static var leastNonzeroMagnitude: Double
• static var leastNormalMagnitude: Double
• static var nan: Double
• static var pi: Double
• static var signalingNaN: Double
• static var significandBitCount: Int
• static var ulpOfOne: Double

  The unit in the last place of 1.0.

• var binade: Double
• var bitPattern: UInt64

  The bit pattern of the value’s encoding.

• var customMirror: Mirror

  A mirror that reflects the Double instance.

• var debugDescription: String

  A textual representation of the value, suitable for debugging.

• var description: String

  A textual representation of the value.

• var exponent: Int
• var exponentBitPattern: UInt
• var isCanonical: Bool
• var isFinite: Bool
• var isInfinite: Bool
• var isNaN: Bool
• var isNormal: Bool
• var isSignalingNaN: Bool
• var isSubnormal: Bool
• var isZero: Bool
• var magnitude: Double
• var nextUp: Double
• var sign: FloatingPointSign
• var significand: Double
• var significandBitPattern: UInt64
• var significandWidth: Int
• var ulp: Double
• static func * (Double, Double) -> Double
• static func *= (inout Double, Double)
• static func + (Double, Double) -> Double
• static func += (inout Double, Double)
• static func - (Double) -> Double
• static func - (Double, Double) -> Double
• static func -= (inout Double, Double)
• static func / (Double, Double) -> Double
• static func /= (inout Double, Double)
• func addProduct(Double, Double)
• func advanced(by: Double) -> Double
• func distance(to: Double) -> Double
• func encode(to: Encoder) throws

  Encodes this value into the given encoder.

• func formRemainder(dividingBy: Double)
• func formSquareRoot()
• func formTruncatingRemainder(dividingBy: Double)
• func hash(into: inout Hasher)
• func isEqual(to: Double) -> Bool
• func isLess(than: Double) -> Bool
• func isLessThanOrEqualTo(Double) -> Bool
• func negate()
• func round(FloatingPointRoundingRule)
• func write<Target>(to: inout Target)
• struct SIMD16Storage

  Storage for a vector of 16 floating-point values.

• struct SIMD2Storage

  Storage for a vector of two floating-point values.

• struct SIMD32Storage

  Storage for a vector of 32 floating-point values.

• struct SIMD4Storage

  Storage for a vector of four floating-point values.

• struct SIMD64Storage

  Storage for a vector of 64 floating-point values.

• struct SIMD8Storage

  Storage for a vector of eight floating-point values.

• typealias Exponent
• typealias Magnitude
• typealias RawSignificand
• typealias SIMDMaskScalar
• var customPlaygroundQuickLook: _PlaygroundQuickLook

  A custom playground Quick Look for the Double instance.

Features

• static func random(in: ClosedRange<Self>) -> Self

  Returns a random value within the specified range.

• static func random(in: Range<Self>) -> Self

  Returns a random value within the specified range.

• static func random<T>(in: ClosedRange<Self>, using: inout T) -> Self

  Returns a random value within the specified range, using the given generator as a source for randomness.

• static func random<T>(in: Range<Self>, using: inout T) -> Self

  Returns a random value within the specified range, using the given generator as a source for randomness.

• static func != (Self, Self) -> Bool
• static func + (Self) -> Self

  Returns the given number unchanged.

• static func ... (Self) -> PartialRangeFrom<Self>

  Returns a partial range extending upward from a lower bound.

• static func ... (Self) -> PartialRangeThrough<Self>

  Returns a partial range up to, and including, its upper bound.

• static func ... (Self, Self) -> ClosedRange<Self>

  Returns a closed range that contains both of its bounds.

• static func ..< (Self) -> PartialRangeUpTo<Self>

  Returns a partial range up to, but not including, its upper bound.

• static func ..< (Self, Self) -> Range<Self>

  Returns a half-open range that contains its lower bound but not its upper bound.

• static func < (Self, Self) -> Bool
• static func <= (Self, Self) -> Bool
• static func == (Self, Self) -> Bool
• static func == (Self, Self) -> Bool
• static func > (Self, Self) -> Bool
• static func >= (Self, Self) -> Bool
• func round()
• func rounded() -> Self

Available in _Differentiation

Conformances

• protocol Differentiable

  A type that mathematically represents a differentiable manifold whose tangent spaces are finite-dimensional.

Members

• func move(by: Double.TangentVector)
• typealias TangentVector

Available in Foundation

Members

• init(CGFloat)
• init?(exactly: NSNumber)
• init(truncating: NSNumber)
• init(NSNumber)

Extension in BSON

Conformances

• protocol Primitive
• protocol PrimitiveEncodable

Features

• func equals(Primitive) -> Bool

Extension in MultipartKit

Conformances

• protocol MultipartPartConvertible

Members

• init?(multipart: MultipartPart)
• var multipart: MultipartPart?

Extension in ArgumentParser

Conformances

• protocol ExpressibleByArgument

  A type that can be expressed as a command-line argument.

Extension in JSONDecoding

Conformances

• protocol JSONDecodable

  A type that can be decoded from a JSON variant value.

Members

• init(json: JSON) throws

Extension in BSONDecoding

Conformances

• protocol BSONDecodable

  A type that can be decoded from a BSON variant value backed by some type of storage not particular to the decoded type.

Extension in BSONEncoding

Conformances

• protocol BSONEncodable

  A type that can be encoded to a BSON variant value.

Members

• func encode(to: inout BSON.Field)

  Encodes this metatype as a value of type BSON.double.

Extension in RealModule

Conformances

• protocol AlgebraicField

  A type modeling an algebraic field. Refines the SignedNumeric protocol, adding division.

• protocol ElementaryFunctions

  A type that has elementary functions available.

• protocol Real

  A type that models the real numbers.

• protocol RealFunctions

Members

• static func _mulAdd(Double, Double, Double) -> Double
• static func acos(Double) -> Double
• static func acosh(Double) -> Double
• static func asin(Double) -> Double
• static func asinh(Double) -> Double
• static func atan(Double) -> Double
• static func atan2(y: Double, x: Double) -> Double
• static func atanh(Double) -> Double
• static func cos(Double) -> Double
• static func cosh(Double) -> Double
• static func erf(Double) -> Double
• static func erfc(Double) -> Double
• static func exp(Double) -> Double
• static func exp2(Double) -> Double
• static func expMinusOne(Double) -> Double
• static func gamma(Double) -> Double
• static func hypot(Double, Double) -> Double
• static func log(Double) -> Double
• static func log(onePlus: Double) -> Double
• static func log10(Double) -> Double
• static func log2(Double) -> Double
• static func logGamma(Double) -> Double
• static func pow(Double, Double) -> Double
• static func pow(Double, Int) -> Double
• static func root(Double, Int) -> Double
• static func sin(Double) -> Double
• static func sinh(Double) -> Double
• static func tan(Double) -> Double
• static func tanh(Double) -> Double

Features

• static func cosMinusOne(Self) -> Self

  cos(x) - 1, computed in such a way as to maintain accuracy for small x.

• static func sqrt(Self) -> Self

Extension in SwiftSyntaxBuilder

Conformances

• protocol ExpressibleByLiteralSyntax

  A Swift type whose value can be represented directly in source code by a Swift literal.

Extension in JSONDecoding

Conformances

• protocol JSONDecodable

  A type that can be decoded from a JSON variant value.

Members

• init(json: JSON.Node) throws

Extension in Vapor

Conformances

• protocol AsyncRequestDecodable

  Can convert Request to a Self.

• protocol AsyncResponseEncodable

  Can convert self to a Response.

• protocol Content

  Convertible to / from content in an HTTP message.

• protocol RequestDecodable

  Can convert Request to a Self.

• protocol ResponseEncodable

  Can convert self to a Response.

Features

• func encodeResponse(status: HTTPStatus, headers: HTTPHeaders, for: Request) -> EventLoopFuture<Response>

  Asynchronously encodes Self into a Response, setting the supplied status and headers.