make style more like Google style

booster/linear/xgboost_linear.hpp

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_LINEAR_HPP_
-#define _XGBOOST_LINEAR_HPP_
+#ifndef XGBOOST_LINEAR_HPP
+#define XGBOOST_LINEAR_HPP
 /*!
  * \file xgboost_linear.h
  * \brief Implementation of Linear booster, with L1/L2 regularization: Elastic Net

booster/tree/xgboost_col_treemaker.hpp

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_COL_TREEMAKER_HPP_
-#define _XGBOOST_COL_TREEMAKER_HPP_
+#ifndef XGBOOST_COL_TREEMAKER_HPP
+#define XGBOOST_COL_TREEMAKER_HPP
 /*!
  * \file xgboost_col_treemaker.hpp
  * \brief implementation of regression tree maker,

booster/tree/xgboost_svdf_tree.hpp

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_APEX_TREE_HPP_
-#define _XGBOOST_APEX_TREE_HPP_
+#ifndef XGBOOST_APEX_TREE_HPP
+#define XGBOOST_APEX_TREE_HPP
 /*!
  * \file xgboost_svdf_tree.hpp
  * \brief implementation of regression tree constructor, with layerwise support

booster/tree/xgboost_tree.hpp

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_TREE_HPP_
-#define _XGBOOST_TREE_HPP_
+#ifndef XGBOOST_TREE_HPP
+#define XGBOOST_TREE_HPP
 /*!
  * \file xgboost_tree.hpp
  * \brief implementation of regression tree

booster/tree/xgboost_tree_model.h

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_TREE_MODEL_H_
-#define _XGBOOST_TREE_MODEL_H_
+#ifndef XGBOOST_TREE_MODEL_H
+#define XGBOOST_TREE_MODEL_H
 /*!
  * \file xgboost_tree_model.h
  * \brief generic definition of model structure used in tree models

booster/xgboost.h

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_H_
-#define _XGBOOST_H_
+#ifndef XGBOOST_H
+#define XGBOOST_H
 /*!
  * \file xgboost.h
  * \brief the general gradient boosting interface

booster/xgboost_data.h

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_DATA_H_
-#define _XGBOOST_DATA_H_
+#ifndef XGBOOST_DATA_H
+#define XGBOOST_DATA_H
 
 /*!
  * \file xgboost_data.h

booster/xgboost_gbmbase.h

@@ -1,5 +1,5 @@
-#ifndef _XGBOOST_GBMBASE_H_
-#define _XGBOOST_GBMBASE_H_
+#ifndef XGBOOST_GBMBASE_H
+#define XGBOOST_GBMBASE_H
 
 #include <omp.h>
 #include <cstring>