---
title: "matrix_from_diagonal(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/matrix_from_diagonal(_:)-1v0zl"
---

# matrix_from_diagonal(_:)

Returns a new matrix with the specified vector on the main diagonal.

## Declaration

```swift
func matrix_from_diagonal(_ d: SIMD2<Float>) -> simd_float2x2
```

## See Also

### Deprecated Symbols

- [matrix_invert(_:)](simd/matrix_invert(_:)-94e37.md)
- [matrix_transpose(_:)](simd/matrix_transpose(_:)-77v7g.md)
- [matrix_from_columns(_:_:)](simd/matrix_from_columns(_:_:)-5urmx.md)
- [matrix_determinant(_:)](simd/matrix_determinant(_:)-30k4n.md)
- [matrix_equal(_:_:)](simd/matrix_equal(_:_:)-88hz9.md)
- [init(_:)](simd/simd_float2x2/init(_:)-uyy7.md)
- [cmatrix](simd/simd_float2x2/cmatrix.md)