$NetBSD: patch-bh,v 1.1 2005/11/08 18:14:49 joerg Exp $

--- Modules/fpectlmodule.c.orig	2005-11-08 17:25:20.000000000 +0000
+++ Modules/fpectlmodule.c
@@ -68,7 +68,7 @@ extern "C" {
 #include "Python.h"
 #include <signal.h>
 
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__DragonFly__)
 #  include <ieeefp.h>
 #endif
 
@@ -189,7 +189,7 @@ static void fpe_reset(Sigfunc *handler)
     PyOS_setsig(SIGFPE, handler);
 
 /*-- FreeBSD ----------------------------------------------------------------*/
-#elif defined(__FreeBSD__)
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
     fpresetsticky(fpgetsticky());
     fpsetmask(FP_X_INV | FP_X_DZ | FP_X_OFL);
     PyOS_setsig(SIGFPE, handler);
@@ -235,7 +235,7 @@ static void fpe_reset(Sigfunc *handler)
 
 static PyObject *turnoff_sigfpe(PyObject *self,PyObject *args)
 {
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__DragonFly__)
     fpresetsticky(fpgetsticky());
     fpsetmask(0);
 #else