---
title: vS64SubS
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.0+]
path: kernel/1411100-vs64subs
---

# vS64SubS

Signed 64-bit subtraction with saturation (clipping).

## Declaration

```occ
vSInt32 vS64SubS(vSInt32 vA, vSInt32 vB);
```