---
title: "add(multiplication:_:)"
framework: accelerate
role: symbol
role_heading: Type Method
path: "accelerate/vdsp/add(multiplication:_:)-9bgb2"
---

# add(multiplication:_:)

Returns the single-precision element-wise sum of a vector and the product of two vectors.

## Declaration

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

## Parameters

- `multiplication`: A tuple that contains the vectors A and B in D = (A * B) + C.
- `vector`: The input vector 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 products of the first N elements of A and B, adds each product to the corresponding value in C, and writes the result to D.  for (n = 0; n < N; ++n)     D[n] = (A[n] * B[n]) + C[n];

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,  4,  3,  2,  1]          let d = vDSP.add(multiplication: (a, b),                      c)          // Prints "[15.0, 44.0, 93.0, 162.0, 251.0]".     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)