Function log2

mlspp/src/tree_math.cpp:8–20

static const uint32_t one = 0x01;

static uint32_t
log2(uint32_t x)
{
  if (x == 0) {
    return 0;
  }

  uint32_t k = 0;
  while ((x >> k) > 0) {
    k += 1;
  }
  return k - 1;
}

namespace mlspp {