From ce575434ef04db4173f314fda24f5ddc66a9c6ea Mon Sep 17 00:00:00 2001
From: Intel A80486DX2-66 <larry.holst@disroot.org>
Date: Wed, 26 Jun 2024 12:16:50 +0300
Subject: [PATCH] opt_int_div.h: prevent multiple inclusion

---
 c-programming/math/opt_int_div.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/c-programming/math/opt_int_div.h b/c-programming/math/opt_int_div.h
index 7e1e5e1..fc8d1e1 100644
--- a/c-programming/math/opt_int_div.h
+++ b/c-programming/math/opt_int_div.h
@@ -9,6 +9,9 @@
  * License: Unlicense
  */
 
+#ifndef _OPT_INT_DIV_H
+#define _OPT_INT_DIV_H
+
 #include <math.h>
 #include <stdint.h>
 
@@ -46,3 +49,5 @@
         :                                                                     \
             ((a) / (b)) ))                                                    \
     ) /* end */
+
+#endif /* _OPT_INT_DIV_H */
\ No newline at end of file