---
title: MTLTensorDataType.metalFloat4e2m1
framework: Metal
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: metal/mtltensordatatype/metalfloat4e2m1
---

# MTLTensorDataType.metalFloat4e2m1

A 4-bit floating point data type with 2 exponent bits, 1 mantissa bit, and 1 sign bit.

## Declaration

```swift
case metalFloat4e2m1
```