Added ifndef/def/endif protection to C headers.

I don't include them multiple times, but maybe someone else will.

diff --git a/err_mac.h b/err_mac.h
index 11353e33f85c21ac654bc341bcf1db051f0bf2fc..41730d6a17e3c5286d6beab279fe6589400f4bf1 100644 (file)
--- a/err_mac.h
+++ b/err_mac.h
@@ -23,6 +23,9 @@
   Philadelphia PA 19104, USA.
 */
 
+#ifndef _ERR_MAC_H
+#define _ERR_MAC_H
+
 #include <stdio.h> /* for fprintf(), stderr */
 
 #define SUCCESS 0
@@ -163,3 +166,5 @@ static int err_mac_ans;
       fflush(stderr);                                                 \
     }                                                                 \
   } while(0)
+
+#endif /* _ERR_MAC_H */

diff --git a/stripchart.h b/stripchart.h
index b738e09c2e1ebc539ca241a0786059878f7e33f8..d564c19229cc326aeb46bd0be0de77fe8666ec60 100644 (file)
--- a/stripchart.h
+++ b/stripchart.h
@@ -22,6 +22,9 @@
   Philadelphia PA 19104, USA.
  */
 
+#ifndef _STRIPCHART_H
+#define _STRIPCHART_H
+
 typedef struct stripchart_struct stripchart_t;
 
 extern int stripchart_create(stripchart_t **pChart,
@@ -35,3 +38,5 @@ extern int stripchart_create(stripchart_t **pChart,
 extern int stripchart_point(stripchart_t *chart, double value);
 
 extern int stripchart_destroy(stripchart_t **pChart);
+
+#endif /* _STRIPCHART_H */