---
title: z_crc32_combine
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.6+]
path: kernel/1546936-z_crc32_combine
---

# z_crc32_combine

## Declaration

```occ
uLong z_crc32_combine(uLong crc1, uLong crc2, long len2);
```