clz

Returns the number of leading 0-bits in x, starting at the most significant bit position.

template <typename I, typename return_t, detail::enable_if_t<(detail::builtin::is_geninteger<I>::value), int> >
return_t clz(I x)

1. Returns the number of leading 0-bits in `x`, starting at the most significant bit position.
   Parameters:
   • I x