c++ style include files do not have a .h extension

src/REPLICA/fix_event_hyper.cpp

@@ -11,8 +11,8 @@
    See the README file in the top-level LAMMPS directory.
 ------------------------------------------------------------------------- */
 
-#include <cstdlib.h>
-#include <cstring.h>
+#include <cstdlib>
+#include <cstring>
 #include "fix_event_hyper.h"
 #include "atom.h"
 #include "update.h"

src/REPLICA/fix_hyper.cpp

@@ -11,7 +11,7 @@
    See the README file in the top-level LAMMPS directory.
 ------------------------------------------------------------------------- */
 
-#include <cstring.h>
+#include <cstring>
 #include "fix_hyper.h"
 
 using namespace LAMMPS_NS;

src/REPLICA/fix_hyper_global.cpp

@@ -12,9 +12,9 @@
 ------------------------------------------------------------------------- */
 
 #include <mpi.h>
-#include <cmath.h>
-#include <cstdio.h>
-#include <cstring.h>
+#include <cmath>
+#include <cstdio>
+#include <cstring>
 #include "fix_hyper_global.h"
 #include "atom.h"
 #include "update.h"

src/REPLICA/fix_hyper_local.cpp

@@ -12,9 +12,9 @@
 ------------------------------------------------------------------------- */
 
 #include <mpi.h>
-#include <cmath.h>
-#include <cstdio.h>
-#include <cstring.h>
+#include <cmath>
+#include <cstdio>
+#include <cstring>
 #include "fix_hyper_local.h"
 #include "atom.h"
 #include "update.h"

src/REPLICA/hyper.cpp

@@ -11,9 +11,9 @@
    See the README file in the top-level LAMMPS directory.
 ------------------------------------------------------------------------- */
 
-#include <cmath.h>
-#include <cstdlib.h>
-#include <cstring.h>
+#include <cmath>
+#include <cstdlib>
+#include <cstring>
 #include "hyper.h"
 #include "update.h"
 #include "atom.h"