Function gcd

include/cutlass/fast_math.h:167–176

 */
template <typename value_t>
CUTLASS_HOST_DEVICE
CUTLASS_CONSTEXPR_IF_CXX17
value_t gcd(value_t a, value_t b) {
  for (;;) {
    if (a == value_t{0}) return cutlass::abs_for_integer(b);
    b %= a;
    if (b == value_t{0}) return cutlass::abs_for_integer(a);
    a %= b;
  }
}

/**
 * Least common multiple