Rename rnd to round in I.1
diff --git a/CppCoreGuidelines.md b/CppCoreGuidelines.md
index 3d5dd8755..9dd3a94bf 100644
--- a/CppCoreGuidelines.md
+++ b/CppCoreGuidelines.md
@@ -1223,12 +1223,12 @@ Correctness. Assumptions not stated in an interface are easily overlooked and ha
 
 Controlling the behavior of a function through a global (namespace scope) variable (a call mode) is implicit and potentially confusing. For example:
 
-    int rnd(double d)
+    int round(double d)
     {
-        return (rnd_up) ? ceil(d) : d;    // don't: "invisible" dependency
+        return (round_up) ? ceil(d) : d;    // don't: "invisible" dependency
     }
 
-It will not be obvious to a caller that the meaning of two calls of `rnd(7.2)` might give different results.
+It will not be obvious to a caller that the meaning of two calls of `round(7.2)` might give different results.
 
 ##### Exception
 

At first, I assumed that this is "rand" function, not "round" function, and was confused why exactly is it a problem that this returns different values. While it's easy to notice when actually reading the code, this slows down the comprehension, and bad function naming is not point of that particular guideline.