Method SplitIndex

src/tree/param.h:482–482

!\return feature index to split on */

  /*!\return feature index to split on */
  [[nodiscard]] bst_feature_t SplitIndex() const { return sindex & ((1U << 31) - 1U); }
  /*!\return whether missing value goes to left branch */
  [[nodiscard]] bool DefaultLeft() const { return (sindex >> 31) != 0; }
  /*!