pub fn cholesky_in_place<'out, I: Index, T: ComplexField>(
a: MatMut<'_, T>,
perm: &'out mut [I],
perm_inv: &'out mut [I],
par: Par,
stack: &mut MemStack,
params: PivLltParams,
) -> Result<(PivLltInfo, PermRef<'out, I>), LltError>