1 files changed, 18 insertions, 0 deletions
diff --git a/unix/boot/spp/rpp/ratlibr/clower.r b/unix/boot/spp/rpp/ratlibr/clower.r
new file mode 100644
index 00000000..0f629ea3
--- /dev/null
+++ b/unix/boot/spp/rpp/ratlibr/clower.r
@@ -0,0 +1,18 @@
+include	defs
+
+# clower - change letter to lower case
+
+   character function clower(c)
+   character c
+
+   character k
+
+   if (c >= BIGA & c <= BIGZ) {
+      k = LETA - BIGA	# avoid integer overflow in byte machines
+      clower = c + k
+      }
+   else
+      clower = c
+
+   return
+   end