Calculates the additive inverse of a value.
override static func - (operand: Self) -> Self The value to negate.
The unary minus operator (prefix -) calculates the negation of its operand. The result is always exact.
let x = 21.5
let y = -x
// y == -21.5import Swiftprotocol FloatingPoint : Hashable, SignedNumeric, Strideable where Self == Self.MagnitudeA floating-point numeric type.
static func - (operand: Self) -> Self Returns the additive inverse of the specified value.
associatedtype Exponent : SignedIntegerA type that can represent any written exponent.
init(_ value: Int) Creates a new value, rounded to the closest possible representation.
init<Source>(_ value: Source) where Source : BinaryInteger Creates a new value, rounded to the closest possible representation.
init?<Source>(exactly value: Source) where Source : BinaryInteger Creates a new value, if the given integer can be represented exactly.
init(sign: FloatingPointSign, exponent: Self.Exponent, significand: Self) Creates a new value from the given sign, exponent, and significand.
init(signOf: Self, magnitudeOf: Self) Creates a new floating-point value using the sign of one value and the magnitude of another.
static var greatestFiniteMagnitude: Self { get }The greatest finite number representable by this type.
static var infinity: Self { get }Positive infinity.
static var leastNonzeroMagnitude: Self { get }The least positive number.
static var leastNormalMagnitude: Self { get }The least positive normal number.
static var nan: Self { get }A quiet NaN (“not a number”).
static var pi: Self { get }The mathematical constant pi (π), approximately equal to 3.14159.
static var radix: Int { get }The radix, or base of exponentiation, for a floating-point type.
static var signalingNaN: Self { get }A signaling NaN (“not a number”).
static var ulpOfOne: Self { get }The unit in the last place of 1.0.
static func maximum(_ x: Self, _ y: Self) -> Self Returns the greater of the two given values.
static func maximumMagnitude(_ x: Self, _ y: Self) -> Self Returns the value with greater magnitude.
static func minimum(_ x: Self, _ y: Self) -> Self Returns the lesser of the two given values.
static func minimumMagnitude(_ x: Self, _ y: Self) -> Self Returns the value with lesser magnitude.
var exponent: Self.Exponent { get }The exponent of the floating-point value.
var floatingPointClass: FloatingPointClassification { get }The classification of this value.
var isCanonical: Bool { get }A Boolean value indicating whether the instance’s representation is in its canonical form.
var isFinite: Bool { get }A Boolean value indicating whether this instance is finite.
var isInfinite: Bool { get }A Boolean value indicating whether the instance is infinite.
var isNaN: Bool { get }A Boolean value indicating whether the instance is NaN (“not a number”).
var isNormal: Bool { get }A Boolean value indicating whether this instance is normal.
var isSignalingNaN: Bool { get }A Boolean value indicating whether the instance is a signaling NaN.
var isSubnormal: Bool { get }A Boolean value indicating whether the instance is subnormal.
var isZero: Bool { get }A Boolean value indicating whether the instance is equal to zero.
var nextDown: Self { get }The greatest representable value that compares less than this value.
var nextUp: Self { get }The least representable value that compares greater than this value.
var sign: FloatingPointSign { get }The sign of the floating-point value.
var significand: Self { get }The significand of the floating-point value.
var ulp: Self { get }The unit in the last place of this value.
override static func * (lhs: Self, rhs: Self) -> Self Multiplies two values and produces their product, rounding to a representable value.
override static func *= (lhs: inout Self, rhs: Self) Multiplies two values and stores the result in the left-hand-side variable, rounding to a representable value.
override static func + (lhs: Self, rhs: Self) -> Self Adds two values and produces their sum, rounded to a representable value.
override static func += (lhs: inout Self, rhs: Self) Adds two values and stores the result in the left-hand-side variable, rounded to a representable value.
override static func - (lhs: Self, rhs: Self) -> Self Subtracts one value from another and produces their difference, rounded to a representable value.
override static func -= (lhs: inout Self, rhs: Self) Subtracts the second value from the first and stores the difference in the left-hand-side variable, rounding to a representable value.
static func / (lhs: Self, rhs: Self) -> Self Returns the quotient of dividing the first value by the second, rounded to a representable value.
static func /= (lhs: inout Self, rhs: Self) Divides the first value by the second and stores the quotient in the left-hand-side variable, rounding to a representable value.
mutating func addProduct(_ lhs: Self, _ rhs: Self) Adds the product of the two given values to this value in place, computed without intermediate rounding.
func addingProduct(_ lhs: Self, _ rhs: Self) -> Self Returns the result of adding the product of the two given values to this value, computed without intermediate rounding.
mutating func formRemainder(dividingBy other: Self) Replaces this value with the remainder of itself divided by the given value.
mutating func formSquareRoot() Replaces this value with its square root, rounded to a representable value.
mutating func formTruncatingRemainder(dividingBy other: Self) Replaces this value with the remainder of itself divided by the given value using truncating division.
func isEqual(to other: Self) -> Bool Returns a Boolean value indicating whether this instance is equal to the given value.
func isLess(than other: Self) -> Bool Returns a Boolean value indicating whether this instance is less than the given value.
func isLessThanOrEqualTo(_ other: Self) -> Bool Returns a Boolean value indicating whether this instance is less than or equal to the given value.
func isTotallyOrdered(belowOrEqualTo other: Self) -> Bool Returns a Boolean value indicating whether this instance should precede or tie positions with the given value in an ascending sort.
override mutating func negate() Replaces this value with its additive inverse.
func remainder(dividingBy other: Self) -> Self Returns the remainder of this value divided by the given value.
mutating func round(_ rule: FloatingPointRoundingRule) Rounds the value to an integral value using the specified rounding rule.
func rounded(_ rule: FloatingPointRoundingRule) -> Self Returns this value rounded to an integral value using the specified rounding rule.
func squareRoot() -> Self Returns the square root of the value, rounded to a representable value.
func truncatingRemainder(dividingBy other: Self) -> Self Returns the remainder of this value divided by the given value using truncating division.