$NetBSD: patch-ab,v 1.1 2012/08/28 17:14:13 is Exp $

--- astro.c.orig	2003-01-28 00:56:55.000000000 +0000
+++ astro.c
@@ -25,6 +25,7 @@
 ** See http://www.fourmilab.ch/moontool/
 */
 
+#include <stdlib.h>
 #include <stdio.h>
 #include <math.h>
 #include <time.h>