---
title: "init(device:leftQuantizationDescriptor:rightQuantizationDescriptor:)"
framework: metalperformanceshaders
role: symbol
role_heading: Initializer
path: "metalperformanceshaders/mpsndarrayquantizedmatrixmultiplication/init(device:leftquantizationdescriptor:rightquantizationdescriptor:)"
---

# init(device:leftQuantizationDescriptor:rightQuantizationDescriptor:)

## Declaration

```swift
init(device: any MTLDevice, leftQuantizationDescriptor: MPSNDArrayQuantizationDescriptor?, rightQuantizationDescriptor: MPSNDArrayQuantizationDescriptor?)
```