---
title: vS128Sub
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.0+]
path: kernel/1411118-vs128sub
---

# vS128Sub

Signed 128-bit subtraction (modular arithmetic).

## Declaration

```occ
vSInt32 vS128Sub(vSInt32 vA, vSInt32 vB);
```