-;; The x86 port used not to reduce the arguments of transcendentals
-;; correctly. On other platforms, we trust libm to DTRT.
-#+x86
-(with-test (:name :range-reduction)
+;; This was previously x86-only, with note:
+;; The x86 port used not to reduce the arguments of transcendentals
+;; correctly. On other platforms, we trust libm to DTRT.
+;; but it doesn't cost any real amount to just test them all
+(with-test (:name :range-reduction
+ :fails-on ':x86-64)