xgboost

### - _ -

- __span_noexcept : span.h

### - d -

- DECLARE_FIELD_ENUM_CLASS : parameter.h

### - k -

- KERNEL_CHECK : span.h

### - o -

- OBSERVER_ENDL : observer.h
- OBSERVER_NEWLINE : observer.h
- OBSERVER_PRINT : observer.h

### - s -

- SPAN_CHECK : span.h
- SPAN_LT : span.h

### - w -

- WITH_CUDA : common.h

### - x -

- XGB_DLL : c_api.h
- XGB_EXTERN_C : c_api.h
- XGBOOST_ALIGNAS : base.h
- XGBOOST_CUSTOMIZE_GLOBAL_PRNG : base.h
- XGBOOST_CUSTOMIZE_LOGGER : base.h
- XGBOOST_DEV_INLINE : base.h
- XGBOOST_DEVICE : base.h
- XGBOOST_EXPECT : base.h
- XGBOOST_HOST_DEV_INLINE : base.h
- XGBOOST_LOG_WITH_TIME : base.h
- XGBOOST_PARALLEL_SORT : base.h
- XGBOOST_PARALLEL_STABLE_SORT : base.h
- XGBOOST_REGISTER_GBM : gbm.h
- XGBOOST_REGISTER_LINEAR_UPDATER : linear_updater.h
- XGBOOST_REGISTER_METRIC : metric.h
- XGBOOST_REGISTER_OBJECTIVE : objective.h
- XGBOOST_REGISTER_PREDICTOR : predictor.h
- XGBOOST_REGISTER_TREE_UPDATER : tree_updater.h
- XGBOOST_STRICT_R_MODE : base.h
- XGBOOST_VER_MAJOR : version_config.h
- XGBOOST_VER_MINOR : version_config.h
- XGBOOST_VER_PATCH : version_config.h