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-rw-r--r--ext/raindrops/raindrops.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/raindrops/raindrops.c b/ext/raindrops/raindrops.c
index 599f39d..766ee02 100644
--- a/ext/raindrops/raindrops.c
+++ b/ext/raindrops/raindrops.c
@@ -203,6 +203,9 @@ void Init_raindrops_ext(void)
 #endif
         rb_define_const(cRaindrops, "SIZE", SIZET2NUM(raindrop_size));
 
+        /* the maximum value a raindrop counter can hold */
+        rb_define_const(cRaindrops, "MAX", ULONG2NUM((unsigned long)-1));
+
         rb_define_alloc_func(cRaindrops, alloc);
 
         rb_define_method(cRaindrops, "initialize", init, 1);