---
title: "cospi(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/cospi(_:)-8d55q"
---

# cospi(_:)

Returns the cosine of each element in a vector multiplied by pi.

## Declaration

```swift
func cospi(_ x: simd_double8) -> simd_double8
```

## See Also

### Trigonometric Functions

- [acos(_:)](simd/acos(_:)-2141m.md)
- [asin(_:)](simd/asin(_:)-78d03.md)
- [atan(_:)](simd/atan(_:)-7b52p.md)
- [atan2(_:_:)](simd/atan2(_:_:)-8pfg9.md)
- [cos(_:)](simd/cos(_:)-7bqey.md)
- [sin(_:)](simd/sin(_:)-1joh9.md)
- [sinpi(_:)](simd/sinpi(_:)-9tdix.md)
- [sincos(_:)](simd/sincos(_:)-3iwed.md)
- [sincospi(_:)](simd/sincospi(_:)-5yfry.md)
- [tan(_:)](simd/tan(_:)-7a2xj.md)
- [tanpi(_:)](simd/tanpi(_:)-3lobh.md)