$NetBSD: patch-af,v 1.3 2005/03/14 04:36:53 tv Exp $

--- src/preproc/pic/object.cpp.orig	Wed Apr  7 11:27:56 2004
+++ src/preproc/pic/object.cpp
@@ -202,7 +202,15 @@ double operator*(const position &a, cons
 
 double hypot(const position &a)
 {
-  return hypot(a.x, a.y);
+  double result = hypot(a.x, a.y);
+
+#ifdef __INTERIX
+  /* prevents an endless loop that pops up particularly on Interix */
+  if (isnan(result) && !isnan(a.x) && !isnan(a.y))
+    return 0.0;
+#endif
+
+  return result;
 }
 
 struct arrow_head_type {