Function invert

invert(out: mat2.Mat2, a: mat2.Mat2): mat2.Mat2 | null
Inverts a mat2
Parameters
- out: mat2.Mat2
  the receiving matrix
- a: mat2.Mat2
  the source matrix
Returns mat2.Mat2 | null
out, or null if source matrix is not invertible
- Defined in core/mat2.ts:117