---
title: "expm1(_:)"
framework: Core Graphics
role: symbol
role_heading: Function
platforms: [iOS 7.0+, iPadOS 7.0+, macOS 10.9+, tvOS 9.0+, visionOS 1.0+, watchOS 2.0+]
path: "coregraphics/expm1(_:)"
---

# expm1(_:)

## expm1(_:)

expm1(_:) Function of CoreGraphics ``` func expm1(_ x: CGFloat) -> CGFloat ```