---
title: "alignedDown(for:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/unsaferawpointer/aligneddown(for:)"
---

# alignedDown(for:)

Obtain the preceding pointer properly aligned to store a value of type T.

## Declaration

```swift
func alignedDown<T>(for type: T.Type) -> UnsafeRawPointer where T : ~Copyable
```

## Parameters

- `type`: The type to be stored at the returned address.

## Return Value

Return Value A pointer properly aligned to store a value of type T.

## Discussion

Discussion If self is properly aligned for accessing T, this function returns self.