$OpenBSD$
--- Include/pyport.h.orig	Tue Apr 14 06:35:49 2009
+++ Include/pyport.h	Tue Apr 14 06:36:09 2009
@@ -430,7 +430,7 @@ extern "C" {
  * According to Tim's checkin, the FreeBSD systems use isinf() to work
  * around a FPE bug on that platform.
  */
-#if defined(__FreeBSD__) || defined(__OpenBSD__)
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__FabBSD__)
 #define Py_OVERFLOWED(X) isinf(X)
 #else
 #define Py_OVERFLOWED(X) ((X) != 0.0 && (errno == ERANGE ||    \
@@ -447,7 +447,7 @@ extern "C" {
  *    This isn't reliable.  See Py_OVERFLOWED comments.
  *    X is evaluated more than once.
  */
-#if defined(__FreeBSD__) || defined(__OpenBSD__) || (defined(__hpux) && defined(__ia64))
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__FabBSD__) || (defined(__hpux) && defined(__ia64))
 #define _Py_SET_EDOM_FOR_NAN(X) if (isnan(X)) errno = EDOM;
 #else
 #define _Py_SET_EDOM_FOR_NAN(X) ;