Added errno.h

include/_tail_cc/errno.h

@@ -0,0 +1,20 @@
+/*
+ * errno.h - errors
+ */
+/* $Header$ */
+
+#if	!defined(_ERRNO_H)
+#define	_ERRNO_H
+
+#include	<sys/errno.h>
+
+/* The standard requires the next two definitions. If they are also in
+ * <sys/errno.h>, their values should be equal. The <sys/errno.h> supplied
+ * with the compiler doesn't contain them.
+ */
+#define	EDOM		33	/* math arg out of domain of func */
+#define	ERANGE		34	/* math result not representable */
+
+extern int errno;		/* error number */
+
+#endif	/* _ERRNO_H */