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diff src/triple_key_fn.sml @ 2240:88cc0f44c940

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Rename C functions and remove functors nested inside modules.
author Ziv Scully <ziv@mit.edu>
date Sun, 19 Jul 2015 19:03:11 -0700
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/triple_key_fn.sml	Sun Jul 19 19:03:11 2015 -0700
@@ -0,0 +1,15 @@
+functor TripleKeyFn (structure I : ORD_KEY
+                     structure J : ORD_KEY
+                     structure K : ORD_KEY)
+        : ORD_KEY where type ord_key = I.ord_key * J.ord_key * K.ord_key = struct
+
+type ord_key = I.ord_key * J.ord_key * K.ord_key
+
+fun compare ((i1, j1, k1), (i2, j2, k2)) =
+    case I.compare (i1, i2) of
+        EQUAL => (case J.compare (j1, j2) of
+                      EQUAL => K.compare (k1, k2)
+                    | ord => ord)
+      | ord => ord
+
+end