/** Interleave the bits of s[0], s[1], ... */
static inline code_type interleave(const point_type& s) {
code_type code = code_type(0);
for (unsigned i = 0; i < DIM; ++i) {
FMMTL_ASSERT(unsigned(s[i]) < cells_per_side());
code |= spread_bits(unsigned(s[i])) << i;
}
return code;
}
operator code_type() const { return code_type(this->Value); }
code_type code() const
{
return code_type(code_range::get(this->internal()));
}