adjoint function

dynamic adjoint(
  1. List<double> out,
  2. List<double> a
)

Calculates the adjugate of a mat2

@param {mat2} out the receiving matrix @param {ReadonlyMat2} a the source matrix @returns {mat2} out

Implementation

adjoint(List<double> out, List<double> a) {
  // Caching this value is necessary if out == a
  final a0 = a[0];
  out[0] = a[3];
  out[1] = -a[1];
  out[2] = -a[2];
  out[3] = a0;

  return out;
}