Refactored memcopy range check.

bacnet-stack/include/memcopy.h

@@ -33,14 +33,16 @@
 extern "C" {
 #endif /* __cplusplus */
 
-/* copy len bytes from src to offset of dest if there is enough space. */
-/* returns 0 if there is not enough space, or the number of bytes copied. */
+    bool memcopylen(
+        size_t offset,
+        size_t max,
+        size_t len);
     size_t memcopy(
         void *dest,
         void *src,
-        size_t offset,  /* where in dest to put the data */
-        size_t len,     /* amount of data to copy */
-        size_t max);    /* total size of destination */
+        size_t offset,
+        size_t len,
+        size_t max);
 
 #ifdef __cplusplus
 }