+(_:_:)

lhs: The first value to add.
rhs: The second value to add.

Adds two values and produces their sum, rounded to a representable value.

Declaration

static func + (lhs: Double, rhs: Double) -> Double

The addition operator (+) calculates the sum of its two arguments. For example:

let x = 1.5
let y = x + 2.25
// y == 3.75

The + operator implements the addition operation defined by the IEEE 754 specification.