---
title: vS128AddS
framework: Kernel
role: symbol
role_heading: Function
platforms: [macOS 10.0+]
path: kernel/1411120-vs128adds
---

# vS128AddS

Signed 128-bit addition with saturation (clipping).

## Declaration

```occ
vSInt32 vS128AddS(vSInt32 vA, vSInt32 vB);
```