Initializer

init(bitPattern:)

Creates a new value with the given bit pattern.

Declaration

init(bitPattern: UInt64)

Parameters

bitPattern: The integer encoding of a Double instance.

Discussion

The value passed as bitPattern is interpreted in the binary interchange format defined by the IEEE 754 specification.

See Also

Working with Binary Representation

var bitPattern: UInt64

The bit pattern of the value’s encoding.

var significandBitPattern: UInt64

The raw encoding of the value’s significand field.

var significandWidth: Int

The number of bits required to represent the value’s significand.

var exponentBitPattern: UInt

The raw encoding of the value’s exponent field.

static var significandBitCount: Int

The available number of fractional significand bits.

static var exponentBitCount: Int

The number of bits used to represent the type’s exponent.

static var radix: Int

The radix, or base of exponentiation, for this floating-point type.

init(sign: FloatingPointSign, exponentBitPattern: UInt, significandBitPattern: UInt64)

Creates a new instance from the specified sign and bit patterns.

init(nan: Double.RawSignificand, signaling: Bool)

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

typealias Double.Exponent

A type that can represent any written exponent.

typealias Double.RawSignificand

A type that represents the encoded significand of a value.