1 files changed, 18 insertions, 0 deletions
diff --git a/sys/fmtio/strlwr.x b/sys/fmtio/strlwr.x
new file mode 100644
index 00000000..318366ac
--- /dev/null
+++ b/sys/fmtio/strlwr.x
@@ -0,0 +1,18 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<ctype.h>
+
+# STRLWR -- Convert string to lower case.
+
+procedure strlwr (a)
+
+char	a[ARB]
+int	ip
+
+begin
+	do ip = 1, ARB
+	    if (a[ip] == EOS)
+		break
+	    else if (IS_UPPER(a[ip]))
+		a[ip] = TO_LOWER (a[ip])
+end