> This page is for version 4.5.
> For other versions, use one of these documentation indexes:
> - 4.6 (Latest) (default): https://docs.nvidia.com/holoscan/sdk-user-guide/4-6-latest/llms.txt
> - ltsb-2.0: https://docs.nvidia.com/holoscan/sdk-user-guide/ltsb-2-0/llms.txt
> - 4.5: https://docs.nvidia.com/holoscan/sdk-user-guide/4-5/llms.txt
> - 4.4: https://docs.nvidia.com/holoscan/sdk-user-guide/4-4/llms.txt
> - 4.3: https://docs.nvidia.com/holoscan/sdk-user-guide/4-3/llms.txt
> - Archives: https://docs.nvidia.com/holoscan/sdk-user-guide/archives/llms.txt

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# holoscan::operator+

> Add two quaternions.

```cpp showLineNumbers={false}
template <typename K>
Quaternion<K> holoscan::operator+(
    const Quaternion<K> &lhs,
    const Quaternion<K> &rhs
)
```

Add two quaternions.

**Returns:** Sum of the two quaternions.

**Template parameters**

**`K`** `typename`

Scalar type.

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**Parameters**

**`lhs`** `const Quaternion<K> &`

Left operand.

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**`rhs`** `const Quaternion<K> &`

Right operand.

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