Function bicgstab 

pub fn bicgstab<T: ComplexField>(
    out: MatMut<'_, T>,
    left_precond: impl Precond<T>,
    right_precond: impl Precond<T>,
    mat: impl LinOp<T>,
    rhs: MatRef<'_, T>,
    params: BicgParams<T::Real>,
    callback: impl FnMut(MatRef<'_, T>),
    par: Par,
    stack: &mut MemStack,
) -> Result<BicgInfo<T::Real>, BicgError<T::Real>>

executes bicgstab using the provided preconditioners

note

this function is also optimized for a rhs with multiple columns