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--- js/src/jsnum.cpp.orig 2010-01-05 22:35:17.000000000 -0500
+++ js/src/jsnum.cpp 2010-01-11 05:10:19.000000000 -0500
@@ -43,6 +43,9 @@
/*
* JS number type and wrapper class.
*/
+#if defined(__FreeBSD__)
+#include <sys/param.h>
+#endif
#ifdef XP_OS2
#define _PC_53 PC_53
#define _MCW_EM MCW_EM
@@ -691,8 +694,18 @@
#else
+#if defined(__FreeBSD__) && __FreeBSD_version >= 601000
+#if __BSD_VISIBLE == 0
+#error __BSD_VISIBLE is zero, so fedisableexcept is not defined
+#endif
+#include <fenv.h>
+#define FIX_FPU() ((void)fedisableexcept(FE_ALL_EXCEPT))
+#else
+
#define FIX_FPU() ((void)0)
+#endif /* defined(__FreeBSD__) && __FreeBSD_version >= 503000 */
+
#endif
JSBool
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