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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 91019a1219..9c773927cb 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -1297,6 +1297,9 @@ atan2_test (void)
   TEST_ff_f (atan2, 1.390625L, 0.9296875L, 0.981498387184244311516296577615519772L);
 
   TEST_ff_f (atan2, -0.00756827042671106339L, -.001792735857538728036L, -1.80338464113663849327153994379639112L);
+#if defined TEST_LDOUBLE && LDBL_MANT_DIG >= 64
+  TEST_ff_f (atan2, 0x1.00000000000001p0L, 0x1.00000000000001p0L, M_PI_4l);
+#endif
 
   END (atan2);
 }