}
// Bit complexity (N := len): O(log(N)*M(N)).
const cl_LF compute_pi_brent_salamin_quartic (uintC len)
{
// See [Borwein, Borwein, section 1.4, exercise 3, p. 17].
}
// Bit complexity (N := len): O(log(N)*M(N)).
const cl_LF compute_pi_brent_salamin_quartic (uintC len)
{
// See [Borwein, Borwein, section 1.4, exercise 3, p. 17].