An unsigned integer value type.
SDK
- Xcode 6.0.1+
Framework
- Swift Standard Library
Declaration
struct UInt
Overview
On 32-bit platforms, UInt is the same size as UInt32, and on 64-bit platforms, UInt is the same size as UInt64.
Structure
UInt
Topics
Type Aliases
typealias UIntA type that represents an integer literal.
typealias UIntA type that can represent the absolute value of any possible value of this type.
Initializers
init()Creates a new value equal to zero.
init(Double)Creates an integer from the given floating-point value, rounding toward zero.
init(Float80)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<T>(T)Creates a new instance from the given integer.
init<T>(T)Creates an integer from the given floating-point value, rounding toward zero. Any fractional part of the value passed as source is removed.
init?(String)Creates a new integer value from the given string.
init(NSNumber)Deprecatedinit?<S>(S, radix: Int)Creates a new integer value from the given string and radix.
init(bigCreates an integer from its big-endian representation, changing the byte order if necessary.
init(bitCreates a new instance with the same memory representation as the given value.
init(bitCreates a new value with the bit pattern of the given pointer.
init(bitCreates an integer that captures the full value of the given object identifier.
init<Other>(clamping: Other)Creates a new instance with the representable value that’s closest to the given integer.
init?(exactly: Float)Creates an integer from the given floating-point value, if it can be represented exactly.
init?(exactly: Double)Creates an integer from the given floating-point value, if it can be represented exactly.
init?(exactly: Float80)Creates an integer from the given floating-point value, if it can be represented exactly.
init?<T>(exactly: T)Creates an integer from the given floating-point value, if it can be represented exactly.
init?<T>(exactly: T)Creates a new instance from the given integer, if it can be represented exactly.
init(from: Decoder)Creates a new instance by decoding from the given decoder.
init(integerCreates an instance initialized to the specified integer value.
init(littleCreates an integer from its little-endian representation, changing the byte order if necessary.
init<T>(truncatingCreates a new instance from the bit pattern of the given instance by truncating or sign-extending if needed to fit this type.
Instance Properties
var bigThe big-endian representation of this integer.
var bitThe number of bits in the binary representation of this value.
var byteA representation of this integer with the byte order swapped.
var customA mirror that reflects the UInt instance.
var customA custom playground Quick Look for the UInt instance.
var description: StringA textual representation of this value.
var leadingThe number of leading zeros in this value’s binary representation.
var littleThe little-endian representation of this integer.
var magnitude: UIntThe magnitude of this value.
var nonzeroThe number of bits equal to 1 in this value’s binary representation.
var trailingThe number of trailing zeros in this value’s binary representation.
var words: UIntA collection containing the words of this value’s binary representation, in order from the least significant to most significant.
Type Properties
static var bitThe number of bits used for the underlying binary representation of values of this type.
static var isA Boolean value indicating whether this type is a signed integer type.
static var max: UIntThe maximum representable integer in this type.
static var min: UIntThe minimum representable integer in this type.
Instance Methods
func addingReturns the sum of this value and the given value, along with a Boolean value indicating whether overflow occurred in the operation.
func advanced(by: Int) -> UIntReturns a value that is offset the specified distance from this value.
func distance(to: UInt) -> IntReturns the distance from this value to the given value, expressed as a stride.
func dividedReturns the quotient obtained by dividing this value by the given value, along with a Boolean value indicating whether overflow occurred in the operation.
func dividingReturns a tuple containing the quotient and remainder of dividing the given value by this value.
func encode(to: Encoder)Encodes this value into the given encoder.
func hash(into: Hasher)Hashes the essential components of this value by feeding them into the given hasher.
func isReturns true if this value is a multiple of the given value, and false otherwise.
func multipliedReturns a tuple containing the high and low parts of the result of multiplying this value by the given value.
func multipliedReturns the product of this value and the given value, along with a Boolean value indicating whether overflow occurred in the operation.
func quotientReturns the quotient and remainder of this value divided by the given value.
func remainderReturns the remainder after dividing this value by the given value, along with a Boolean value indicating whether overflow occurred during division.
func signum() -> UIntReturns -1 if this value is negative and 1 if it’s positive; otherwise, 0.
func subtractingReturns the difference obtained by subtracting the given value from this value, along with a Boolean value indicating whether overflow occurred in the operation.
Type Methods
static func random(in: ClosedReturns a random value within the specified range.
static func random(in: Range<UInt>) -> UIntReturns a random value within the specified range.
static func random<T>(in: ClosedReturns a random value within the specified range, using the given generator as a source for randomness.
static func random<T>(in: Range<UInt>, using: T) -> UIntReturns a random value within the specified range, using the given generator as a source for randomness.
Operator Functions
static func != <Other>(UInt, Other) -> BoolReturns a Boolean value indicating whether the two given values are not equal.
static func != (UInt, UInt) -> BoolReturns a Boolean value indicating whether two values are not equal.
static func % (UInt, UInt) -> UIntReturns the remainder of dividing the first value by the second.
static func %= (UInt, UInt)Divides the first value by the second and stores the remainder in the left-hand-side variable.
static func & (UInt, UInt) -> UIntReturns the result of performing a bitwise AND operation on the two given values.
static func & (UInt, UInt) -> UIntReturns the result of performing a bitwise AND operation on the two given values.
static func &* (UInt, UInt) -> UIntReturns the product of the two given values, wrapping the result in case of any overflow.
static func &*= (UInt, UInt)Multiplies two values and stores the result in the left-hand-side variable, wrapping any overflow.
static func &+ (UInt, UInt) -> UIntReturns the sum of the two given values, wrapping the result in case of any overflow.
static func &+= (UInt, UInt)Adds two values and stores the result in the left-hand-side variable, wrapping any overflow.
static func &- (UInt, UInt) -> UIntReturns the difference of the two given values, wrapping the result in case of any overflow.
static func &-= (UInt, UInt)Subtracts the second value from the first and stores the difference in the left-hand-side variable, wrapping any overflow.
static func &<< <Other>(UInt, Other) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the left, masking the shift amount to the type’s bit width.
static func &<< (UInt, UInt) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the left, masking the shift amount to the type’s bit width.
static func &<< (UInt, UInt) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the left, masking the shift amount to the type’s bit width.
static func &<<= (UInt, UInt)Returns the result of shifting a value’s binary representation the specified number of digits to the left, masking the shift amount to the type’s bit width, and stores the result in the left-hand-side variable.
static func &<<= <Other>(UInt, Other)Returns the result of shifting a value’s binary representation the specified number of digits to the left, masking the shift amount to the type’s bit width, and stores the result in the left-hand-side variable.
static func &= (UInt, UInt)Stores the result of performing a bitwise AND operation on the two given values in the left-hand-side variable.
static func &>> <Other>(UInt, Other) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the right, masking the shift amount to the type’s bit width.
static func &>> (UInt, UInt) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the right, masking the shift amount to the type’s bit width.
static func &>> (UInt, UInt) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the right, masking the shift amount to the type’s bit width.
static func &>>= <Other>(UInt, Other)Calculates the result of shifting a value’s binary representation the specified number of digits to the right, masking the shift amount to the type’s bit width, and stores the result in the left-hand-side variable.
static func &>>= (UInt, UInt)Calculates the result of shifting a value’s binary representation the specified number of digits to the right, masking the shift amount to the type’s bit width, and stores the result in the left-hand-side variable.
static func * (UInt, UInt) -> UIntMultiplies two values and produces their product.
static func *= (UInt, UInt)Multiplies two values and stores the result in the left-hand-side variable.
static func + (UInt) -> UIntReturns the given number unchanged.
static func + (UInt, UInt) -> UIntAdds two values and produces their sum.
static func += (UInt, UInt)Adds two values and stores the result in the left-hand-side variable.
static func - (UInt, UInt) -> UIntSubtracts one value from another and produces their difference.
static func -= (UInt, UInt)Subtracts the second value from the first and stores the difference in the left-hand-side variable.
static func ... (UInt) -> PartialReturns a partial range extending upward from a lower bound.
static func ... (UInt) -> PartialReturns a partial range up to, and including, its upper bound.
static func ... (UInt, UInt) -> ClosedReturns a closed range that contains both of its bounds.
static func ..< (UInt) -> PartialReturns a partial range up to, but not including, its upper bound.
static func ..< (UInt, UInt) -> Range<UInt>Returns a half-open range that contains its lower bound but not its upper bound.
static func / (UInt, UInt) -> UIntReturns the quotient of dividing the first value by the second.
static func /= (UInt, UInt)Divides the first value by the second and stores the quotient in the left-hand-side variable.
static func < <Other>(UInt, Other) -> BoolReturns a Boolean value indicating whether the value of the first argument is less than that of the second argument.
static func < (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is less than that of the second argument.
static func << <Other>(UInt, Other) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the left.
static func << <RHS>(UInt, RHS) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the left.
static func <<= <Other>(UInt, Other)Stores the result of shifting a value’s binary representation the specified number of digits to the left in the left-hand-side variable.
static func <= <Other>(UInt, Other) -> BoolReturns a Boolean value indicating whether the value of the first argument is less than or equal to that of the second argument.
static func <= (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is less than or equal to that of the second argument.
static func <= (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is less than or equal to that of the second argument.
static func == <Other>(UInt, Other) -> BoolReturns a Boolean value indicating whether the two given values are equal.
static func == (UInt, UInt) -> BoolReturns a Boolean value indicating whether two values are equal.
static func > <Other>(UInt, Other) -> BoolReturns a Boolean value indicating whether the value of the first argument is greater than that of the second argument.
static func > (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is greater than that of the second argument.
static func > (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is greater than that of the second argument.
static func >= <Other>(UInt, Other) -> BoolReturns a Boolean value indicating whether the value of the first argument is greater than or equal to that of the second argument.
static func >= (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is greater than or equal to that of the second argument.
static func >= (UInt, UInt) -> BoolReturns a Boolean value indicating whether the value of the first argument is greater than or equal to that of the second argument.
static func >> <Other>(UInt, Other) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the right.
static func >> <RHS>(UInt, RHS) -> UIntReturns the result of shifting a value’s binary representation the specified number of digits to the right.
static func >>= <Other>(UInt, Other)Stores the result of shifting a value’s binary representation the specified number of digits to the right in the left-hand-side variable.
static func ^ (UInt, UInt) -> UIntReturns the result of performing a bitwise XOR operation on the two given values.
static func ^ (UInt, UInt) -> UIntReturns the result of performing a bitwise XOR operation on the two given values.
static func ^= (UInt, UInt)Stores the result of performing a bitwise XOR operation on the two given values in the left-hand-side variable.
static func | (UInt, UInt) -> UIntReturns the result of performing a bitwise OR operation on the two given values.
static func | (UInt, UInt) -> UIntReturns the result of performing a bitwise OR operation on the two given values.
static func |= (UInt, UInt)Stores the result of performing a bitwise OR operation on the two given values in the left-hand-side variable.
static func ~ (UInt) -> UIntReturns the inverse of the bits set in the argument.
Structures
See Also
Unsigned Integers
struct UInt8An 8-bit unsigned integer value type.
struct UInt16A 16-bit unsigned integer value type.
struct UInt32A 32-bit unsigned integer value type.
struct UInt64A 64-bit unsigned integer value type.
Beta Software
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