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# BNNSLinearSamplingAlignCorners

The align corners sampling mode.

```
var BNNSLinearSamplingAlignCorners: BNNSLinearSamplingMode { get }
```

## Discussion

This sampling mode is the same as [`BNNSLinearSamplingStrictAlignCorners`](/documentation/Accelerate/BNNSLinearSamplingStrictAlignCorners) unless the input grid has a size of `1`.

Given an input grid with a size of `Xin` and an output grid with a size `Xout`, this mode samples the grid using the following:

```swift
spacing = (Xin - Xin/Xout) / (Xout - 1)

grid_point[0] = (Xin-1) / 2, if Xout==1
grid_point[i] = min(Xin-1, max(0, i*spacing)), for i=0,1,...,Xout-1, if Xout!=1
```

---

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