Specify base cases and behaviours of each comparator function

1 files changed, 5 insertions, 4 deletions

diff --git a/228.sld b/srfi/228.sld
index 3417d76..b3cca89 100644
--- a/228.sld
+++ b/srfi/228.sld
@@ -1,9 +1,10 @@
 (define-library (srfi 228)
-  (import (srfi 1)
-          (srfi 128))
+  (import (scheme base)
+          (srfi 1)
+          (srfi 128)
+          (srfi 151))
   (export make-wrapper-comparator
           make-product-comparator
-          make-sum-comparator
-          comparison-procedures)
+          make-sum-comparator)
 
   (include "composing-comparators.scm"))