determinant function
Determinant returns the determinant of a square floating-point matrix.
For further details, please see: https://docs.opencv.org/master/d2/de8/group__core__array.html#gaf802bd9ca3e07b8b6170645ef0611d0c
Implementation
double determinant(InputArray mtx) {
final p = calloc<ffi.Double>();
cvRun(() => ccore.cv_determinant(mtx.ref, p, ffi.nullptr));
final rval = p.value;
calloc.free(p);
return rval;
}