From 4ae6a06d94b228a5eb67c8473131a791e310c233 Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Sat, 24 Oct 2026 15:25:58 -0700
Subject: Rename modules chapter to 28a

---
 chapter28a/src/main/smp/sys/char.smp | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 chapter28a/src/main/smp/sys/char.smp

(limited to 'chapter28a/src/main/smp/sys/char.smp')

diff --git a/chapter28a/src/main/smp/sys/char.smp b/chapter28a/src/main/smp/sys/char.smp
new file mode 100644
index 00000000..22ca4213
--- /dev/null
+++ b/chapter28a/src/main/smp/sys/char.smp
@@ -0,0 +1,8 @@
+
+val toupper = { u8 c ->
+    return c >= 'a' && c <= 'z' ? c - ('a' - 'A') : c;
+};
+
+val tolower = { u8 c ->
+    return c >= 'A' && c <= 'Z' ? c + ('a' - 'A') : c;
+};
-- 
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