---
title: "add(multiplication:_:)"
framework: accelerate
role: symbol
role_heading: Type Method
path: "accelerate/vdsp/add(multiplication:_:)-36vhq"
---

# add(multiplication:_:)

Returns the single-precision element-wise sum of the product of two vectors, and a scalar value.

## Declaration

```swift
static func add<T, U>(multiplication: (a: T, b: U), _ scalar: Float) -> [Float] where T : AccelerateBuffer, U : AccelerateBuffer, T.Element == Float, U.Element == Float
```

## Parameters

- `multiplication`: A tuple that contains the vectors A and B in D = (A * B) + C.
- `scalar`: The input scalar value C in D = (A * B) + C.

## Mentioned in

Using vDSP for vector-based arithmetic

## Return Value

Return Value The output vector D in D = (A * B) + C.

## Discussion

Discussion This function calculates the element-wise product of vectors A and B, adds scalar value C to the product, and writes the result to vector D.  for (n = 0; n < N; ++n)     D[n] = A[n] * B[n] + C;

The following code shows an example of using this function:     let a: [Float] = [ 1,  2,  3,  4,  5]     let b: [Float] = [10, 20, 30, 40, 50]     let c: Float = 5          let d = vDSP.add(multiplication: (a, b),                      c)               // Prints "[15.0, 45.0, 95.0, 165.0, 255.0]".     print(d)

## See Also

### Addition

- [add(_:_:)](accelerate/vdsp/add(_:_:)-9mv1a.md)
- [add(_:_:)](accelerate/vdsp/add(_:_:)-2ftxc.md)
- [add(_:_:)](accelerate/vdsp/add(_:_:)-53nh9.md)
- [add(_:_:)](accelerate/vdsp/add(_:_:)-7swvf.md)
- [add(_:_:result:)](accelerate/vdsp/add(_:_:result:)-2531u.md)
- [add(_:_:result:)](accelerate/vdsp/add(_:_:result:)-2w0o9.md)
- [add(_:_:result:)](accelerate/vdsp/add(_:_:result:)-338hl.md)
- [add(_:_:result:)](accelerate/vdsp/add(_:_:result:)-3vzwi.md)
- [add(_:to:count:result:)](accelerate/vdsp/add(_:to:count:result:)-g1dk.md)
- [add(_:to:count:result:)](accelerate/vdsp/add(_:to:count:result:)-75np9.md)
- [add(multiplication:_:)](accelerate/vdsp/add(multiplication:_:)-4e3tj.md)
- [add(multiplication:_:)](accelerate/vdsp/add(multiplication:_:)-1bsuq.md)
- [add(multiplication:_:)](accelerate/vdsp/add(multiplication:_:)-9dxlr.md)
- [add(multiplication:_:)](accelerate/vdsp/add(multiplication:_:)-4667v.md)
- [add(multiplication:_:)](accelerate/vdsp/add(multiplication:_:)-3tw93.md)