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-rw-r--r--lib/concepts/Ordering.ml4
-rw-r--r--lib/concepts/Ordering.mli3
2 files changed, 7 insertions, 0 deletions
diff --git a/lib/concepts/Ordering.ml b/lib/concepts/Ordering.ml
new file mode 100644
index 0000000..42b20e5
--- /dev/null
+++ b/lib/concepts/Ordering.ml
@@ -0,0 +1,4 @@
+type ordering = Equal | Smaller | Greater
+
+let of_int x =
+ if x < 0 then Smaller else if x > 0 then Greater else Equal
diff --git a/lib/concepts/Ordering.mli b/lib/concepts/Ordering.mli
new file mode 100644
index 0000000..ab8a3f4
--- /dev/null
+++ b/lib/concepts/Ordering.mli
@@ -0,0 +1,3 @@
+type ordering = Equal | Smaller | Greater
+
+val of_int : int -> ordering