Initializer

init(signOf:magnitudeOf:)

Creates a new floating-point value using the sign of one value and the magnitude of another.

Required. Default implementation provided.

Declaration

init(signOf: Self, magnitudeOf: Self)

Parameters

signOf

A value from which to use the sign. The result of the initializer has the same sign as signOf.

magnitudeOf

A value from which to use the magnitude. The result of the initializer has the same magnitude as magnitudeOf.

Discussion

The following example uses this initializer to create a new Double instance with the sign of a and the magnitude of b:

let a = -21.5
let b = 305.15
let c = Double(signOf: a, magnitudeOf: b)
print(c)
// Prints "-305.15"

This initializer implements the IEEE 754 copysign operation.

Default Implementations

BinaryFloatingPoint Implementations

init(signOf: Self, magnitudeOf: Self)

Creates a new floating-point value using the sign of one value and the magnitude of another.