From 3ab48119dd91fc26fd34c9964538027fa22b460d Mon Sep 17 00:00:00 2001
From: Masaya Tojo <masaya@tojo.tokyo>
Date: Sat, 15 Jun 2024 03:45:15 +0900
Subject: Add reducible

---
 algebraic-structures.reducible.scm | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 algebraic-structures.reducible.scm

(limited to 'algebraic-structures.reducible.scm')

diff --git a/algebraic-structures.reducible.scm b/algebraic-structures.reducible.scm
new file mode 100644
index 0000000..ce9d1b3
--- /dev/null
+++ b/algebraic-structures.reducible.scm
@@ -0,0 +1,20 @@
+(functor ((algebraic-structures reducible) (R (reduce)))
+    (reduce
+     maximum
+     minimum)
+  (import scheme
+          R)
+
+  (define (minimum xs less?)
+    (reduce (lambda (e acc)
+              (if (less? e acc)
+                  e
+                  acc))
+            xs))
+
+  (define (maximum xs less?)
+    (reduce (lambda (e acc)
+              (if (less? e acc)
+                  acc
+                  e))
+            xs)))
-- 
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