Added clang-format directives.

src/calendar.h

 #ifndef CALENDAR_H
 #define CALENDAR_H
 
+// clang-format off
+
 #include <inttypes.h>
 
 #ifdef __cplusplus
@@ -20,6 +22,8 @@ int days_per_month(int calendar, int year, int month);
 }
 #endif
 
+// clang-format on
+
 #endif  /* CALENDAR_H */
 /*
  * Local Variables:

src/cdi_int.h

@@ -506,6 +506,8 @@ size_t cdiGetPageSize(bool largePageAlign);
 
 void zaxisGetIndexList(int nzaxis, int *zaxisIndexList);
 
+// clang-format off
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -529,6 +531,8 @@ int cdiBaseFiletype(int filetype);
 }
 #endif
 
+// clang-format on
+
 #endif  /* CDI_INT_H */
 /*
  * Local Variables:

src/dmemory.h

 #ifndef  _DMEMORY_H
 #define  _DMEMORY_H
 
+// clang-format off
+
 #include <stdio.h>
 
 // if DEBUG_MEMORY is defined setenv MEMORY_DEBUG to debug memory
@@ -43,6 +45,8 @@ extern void    memFree   (void *ptr, const char *file, const char *functionname,
 
 #endif /* DEBUG_MEMORY */
 
+// clang-format on
+
 #endif /* _DMEMORY_H */
 /*
  * Local Variables:

src/timebase.h

 #ifndef TIMEBASE_H
 #define TIMEBASE_H
 
+// clang-format off
+
 #include <inttypes.h>
 
 #ifdef __cplusplus
@@ -30,4 +32,6 @@ void decode_juldaysec(int calendar, int64_t julday, int secofday, int *year, int
 }
 #endif
 
+// clang-format on
+
 #endif /* TIMEBASE_H */