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-rw-r--r--math/libm-test.inc3
1 files changed, 3 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 94d60bff7e..e0ac6131da 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -3442,6 +3442,9 @@ floor_test (void)
   TEST_f_f (floor, 10141204801825835211973625643008.5L, 10141204801825835211973625643008.0L);
   TEST_f_f (floor, 10141204801825835211973625643008.75L, 10141204801825835211973625643008.0L);
   TEST_f_f (floor, 10141204801825835211973625643009.5L, 10141204801825835211973625643009.0L);
+
+  TEST_f_f (floor, 0xf.ffffffffffffff8p+47L, 0xf.fffffffffffep+47L);
+  TEST_f_f (floor, -0x8.000000000000004p+48L, -0x8.000000000001p+48L);
 #endif
 
   END (floor);