--- gnu/float.in.h.orig	2016-11-30 00:30:45.904165000 +1000
+++ gnu/float.in.h	2016-11-30 00:31:24.625329000 +1000
@@ -65,7 +65,7 @@
 /* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
    precision in the compiler but 64 bits of precision at runtime.  See
    <http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>.  */
-#if defined __i386__ && defined __FreeBSD__
+#if defined __i386__ && (defined __FreeBSD__ || defined __BSDSUniX__)
 /* Number of mantissa units, in base FLT_RADIX.  */
 # undef LDBL_MANT_DIG
 # define LDBL_MANT_DIG   64