1 files changed, 16 insertions, 0 deletions
diff --git a/sys/fmtio/chrlwr.x b/sys/fmtio/chrlwr.x
new file mode 100644
index 00000000..a0050207
--- /dev/null
+++ b/sys/fmtio/chrlwr.x
@@ -0,0 +1,16 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<ctype.h>
+
+# CHRLWR -- Convert char to lower case
+
+char procedure chrlwr (ch)
+
+char	ch
+
+begin
+	if (IS_UPPER (ch))
+	    return (TO_LOWER (ch))
+	else
+	    return (ch)
+end