---
title: Zero crossing search
framework: accelerate
role: collectionGroup
role_heading: API Collection
path: accelerate/zero-crossing-search
---

# Zero crossing search

Count and find the zero crossings in a vector.

## Topics

### Single-Vector Zero Crossing Search

- [countZeroCrossings(_:)](accelerate/vdsp/countzerocrossings(_:)-3vfmd.md)
- [countZeroCrossings(_:)](accelerate/vdsp/countzerocrossings(_:)-3btsl.md)

## See Also

### Single-vector arithmetic functions

- [Absolute and negation functions](accelerate/absolute-and-negation-functions.md)
- [Integration functions](accelerate/integration-functions.md)
- [Clipping, limit, and threshold operations](accelerate/clipping-limit-and-threshold-operations.md)
- [Normalization functions](accelerate/normalization-functions.md)
- [Phase computation functions](accelerate/phase-computation-functions.md)
- [Complex conjugation functions](accelerate/complex-conjugation-functions.md)
- [Vector squaring functions](accelerate/vector-squaring-functions.md)
- [Fractional part extraction](accelerate/fractional-part-extraction.md)