Function nextPowerOfTwo

src/common/utils.cpp:6–16

namespace common {

uint64_t nextPowerOfTwo(uint64_t v) {
    v--;
    v |= v >> 1;
    v |= v >> 2;
    v |= v >> 4;
    v |= v >> 8;
    v |= v >> 16;
    v |= v >> 32;
    v++;
    return v;
}

uint64_t prevPowerOfTwo(uint64_t v) {
    return nextPowerOfTwo((v / 2) + 1);