Function PrintHistograms

src/treelearner/gpu_tree_learner.cpp:52–61

#if GPU_DEBUG > 0

void PrintHistograms(HistogramBinEntry* h, size_t size) {
  size_t total = 0;
  for (size_t i = 0; i < size; ++i) {
    printf("%03lu=%9.3g,%9.3g,%7d\t", i, h[i].sum_gradients, h[i].sum_hessians, h[i].cnt);
    total += h[i].cnt;
    if ((i & 3) == 3)
        printf("\n");
  }
  printf("\nTotal examples: %lu\n", total);
}

union Float_t {
    int64_t i;