Instance Methodattaswift.bigint 5.5.1BigInt
squareRoot
Returns the integer square root of a big integer; i.e., the largest integer whose square isn’t greater than value.
func squareRoot() -> BigInt Returns
floor(sqrt(self))
Returns the integer square root of a big integer; i.e., the largest integer whose square isn’t greater than value.
func squareRoot() -> BigInt floor(sqrt(self))
import BigIntstruct BigIntAn arbitary precision signed integer type, also known as a “big integer”.
init() init(_ data: Data) Initializes an integer from the bits stored inside a piece of Data. The data is assumed to be in network (big-endian) byte order with a first byte to represent the sign (0 for positive, 1 for negative)
init(_ buffer: UnsafeRawBufferPointer) Initialize a BigInt from bytes accessed from an UnsafeRawBufferPointer, where the first byte indicates sign (0 for positive, 1 for negative)
init<T>(_ source: T) where T : BinaryFloatingPoint init<T>(_ source: T) where T : BinaryInteger init(_ integer: BigUInt) Initializes a new signed big integer with the same value as the specified unsigned big integer.
init?<S>(_ text: S, radix: Int = 10) where S : StringProtocol Initialize a big integer from an ASCII representation in a given radix. Numerals above 9 are represented by letters from the English alphabet.
init<T>(clamping source: T) where T : BinaryInteger init?(exactly source: Decimal) init?<T>(exactly source: T) where T : BinaryFloatingPoint init?<T>(exactly source: T) where T : BinaryInteger init(extendedGraphemeClusterLiteral value: String) Initialize a new big integer from an extended grapheme cluster. The cluster must consist of a decimal digit.
init(from decoder: Decoder) throws init(integerLiteral value: Int64) Initialize a new big integer from an integer literal.
init(sign: Sign, magnitude: BigUInt) Initializes a new big integer with the provided absolute number and sign flag.
init(stringLiteral value: StringLiteralType) Initialize a new big integer from a decimal number represented by a string literal of arbitrary length. The string must contain only decimal digits.
init?(truncating source: Decimal) init<T>(truncatingIfNeeded source: T) where T : BinaryInteger init(unicodeScalarLiteral value: UnicodeScalar) Initialize a new big integer from a Unicode scalar. The scalar must represent a decimal digit.
init<S>(words: S) where S : Sequence, S.Element == UInt static var isSigned: Bool { get }var bitWidth: Int { get }var debugDescription: String { get }Return the decimal representation of this integer.
var description: String { get }Return the decimal representation of this integer.
var isZero: Bool { get }Return true iff this integer is zero.
var magnitude: BigUIntThe absolute value of this integer.
var playgroundDescription: Any { get }Return the playground quick look representation of this integer.
var sign: SignTrue iff the value of this integer is negative.
var trailingZeroBitCount: Int { get }var words: Words { get }static func % (a: BigInt, b: BigInt) -> BigInt Divide a by b and return the remainder. The result has the same sign as a.
static func %= (a: inout BigInt, b: BigInt) Divide a by b storing the remainder in a.
static func & (lhs: inout BigInt, rhs: BigInt) -> BigInt static func &<< (left: BigInt, right: BigInt) -> BigInt static func &<<= (left: inout BigInt, right: BigInt) static func &= (lhs: inout BigInt, rhs: BigInt) static func &>> (left: BigInt, right: BigInt) -> BigInt static func &>>= (left: inout BigInt, right: BigInt) static func * (a: BigInt, b: BigInt) -> BigInt Multiply a with b and return the result.
static func *= (a: inout BigInt, b: BigInt) Multiply a with b in place.
static func + (a: BigInt, b: BigInt) -> BigInt Add a to b and return the result.
static func += (a: inout BigInt, b: BigInt) Add b to a in place.
static func - (a: BigInt, b: BigInt) -> BigInt Subtract b from a and return the result.
static func -= (a: inout BigInt, b: BigInt) Subtract b from a in place.
static func / (a: BigInt, b: BigInt) -> BigInt Divide a by b and return the quotient. Traps if b is zero.
static func /= (a: inout BigInt, b: BigInt) Divide a by b storing the quotient in a.
static func < (a: BigInt, b: BigInt) -> Bool Return true iff a is less than b.
static func << <Other>(lhs: BigInt, rhs: Other) -> BigInt where Other : BinaryInteger static func <<= <Other>(lhs: inout BigInt, rhs: Other) where Other : BinaryInteger static func == (a: BigInt, b: BigInt) -> Bool Return true iff a is equal to b.
static func >> <Other>(lhs: BigInt, rhs: Other) -> BigInt where Other : BinaryInteger static func >>= <Other>(lhs: inout BigInt, rhs: Other) where Other : BinaryInteger static func ^ (lhs: inout BigInt, rhs: BigInt) -> BigInt static func ^= (lhs: inout BigInt, rhs: BigInt) static func | (lhs: inout BigInt, rhs: BigInt) -> BigInt static func |= (lhs: inout BigInt, rhs: BigInt) static func ~ (x: BigInt) -> BigInt func advanced(by n: Stride) -> BigInt Returns self + n.
func distance(to other: BigInt) -> Stride Returns other - self.
func encode(to encoder: Encoder) throws func greatestCommonDivisor(with b: BigInt) -> BigInt Returns the greatest common divisor of a and b.
func hash(into hasher: inout Hasher) Append this BigInt to the specified hasher.
func inverse(_ modulus: BigInt) -> BigInt? Returns the multiplicative inverse of this integer in modulo modulus arithmetic, or nil if there is no such number.
func isPrime(rounds: Int = 10) -> Bool Returns true if this integer is probably prime. Returns false if this integer is definitely not prime.
func isStrongProbablePrime(_ base: BigInt) -> Bool Returns true iff this integer passes the strong probable prime test for the specified base.
func modulus(_ mod: BigInt) -> BigInt Return the result of a mod b. The result is always a nonnegative integer that is less than the absolute value of b.
mutating func negate() func power(_ exponent: Int) -> BigInt Returns this integer raised to the power exponent.
func power(_ exponent: BigInt, modulus: BigInt) -> BigInt Returns the remainder of this integer raised to the power exponent in modulo arithmetic under modulus.
func quotientAndRemainder(dividingBy y: BigInt) -> (quotient: BigInt, remainder: BigInt) Divide this integer by y and return the resulting quotient and remainder.
func serialize() -> Data Return a Data value that contains the base-256 representation of this integer, in network (big-endian) byte order and a prepended byte to indicate the sign (0 for positive, 1 for negative)
func serializeToBuffer() -> UnsafeRawBufferPointer Return a Data value that contains the base-256 representation of this integer, in network (big-endian) byte order and a prepended byte to indicate the sign (0 for positive, 1 for negative)
func signum() -> BigInt Returns -1 if this value is negative and 1 if it’s positive; otherwise, 0.
enum Signstruct Wordstypealias Magnitude = BigUInttypealias Stride = BigInttypealias Word = BigUInt.WordThe type representing a digit in BigInt’s underlying number system.