--- runtime/fail.c.orig	Fri Jul  4 08:52:34 1997
+++ runtime/fail.c	Mon Feb 16 21:31:37 1998
@@ -1,7 +1,14 @@
 /* Raising exceptions from C. */
 
+#if (defined(__unix__) || defined(unix)) && !defined(USG)
+#include <sys/param.h>
+#endif
+
 #if defined(__MWERKS__) || defined(__CYGWIN32__)
 #define MAXDOUBLE 1.7976931348623157081e+308
+#elif (defined(BSD) && BSD >= 199306)
+#include <float.h>
+#define MAXDOUBLE DBL_MAX
 #else
 #include <values.h>
 #endif