---
title: copysign
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.10+]
path: kernel/1557306-copysign
---

# copysign

## Declaration

```occ
double copysign(double, double);
```

## See Also

### Copy Sign

- [copysignf](kernel/1557234-copysignf.md)
- [copysignl](kernel/1557294-copysignl.md)