$NetBSD: patch-ag,v 1.5 2014/05/12 22:16:54 asau Exp $

--- real.c.orig	1996-01-21 22:15:52.000000000 +0000
+++ real.c
@@ -38,6 +38,10 @@ For additional information about UMB Sch
 point type. As a result, all the operations can use native (C)
 functions.  */
 
+#include <limits.h>
+#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__linux__)
+#include <float.h>
+#endif
 #include "portable.h"
 #include "eval.h"
 #include "object.h"