---
title: "+(_:_:)"
framework: swift
role: symbol
role_heading: Operator
path: "swift/floatingpoint/+(_:_:)"
---

# +(_:_:)

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

## Declaration

```swift
override static func + (lhs: Self, rhs: Self) -> Self
```

## Parameters

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

## Discussion

Discussion 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.