1 files changed, 20 insertions, 0 deletions
diff --git a/sys/libc/isatty.c b/sys/libc/isatty.c
new file mode 100644
index 00000000..b625299a
--- /dev/null
+++ b/sys/libc/isatty.c
@@ -0,0 +1,20 @@
+/* Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+*/
+
+#define import_spp
+#define import_libc
+#define import_xnames
+#include <iraf.h>
+
+
+/* ISATTY -- Test if the given file is a terminal.
+*/
+int
+isatty (
+  XINT	fd
+)
+{
+	XINT  x_fd = fd;
+
+	return (XISATTY (&x_fd));
+}