diff --git a/ChangeLog b/ChangeLog
index ad28e91901..ed888db3fa 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2013-05-03  Joseph Myers  <joseph@codesourcery.com>
 
+	* math/libm-test.inc (lgamma_test): Consistently use TEST_f_f1 to
+	test signgam value.
+
 	* math/libm-test.inc (hypot_test): Do not use
 	IGNORE_ZERO_INF_SIGN.
 
diff --git a/math/libm-test.inc b/math/libm-test.inc
index 343590a315..759754734d 100644
--- a/math/libm-test.inc
+++ b/math/libm-test.inc
@@ -9644,18 +9644,16 @@ lgamma_test (void)
 
   START (lgamma);
 
-  TEST_f_f (lgamma, plus_infty, plus_infty);
-  TEST_f_f (lgamma, 0, plus_infty, DIVIDE_BY_ZERO_EXCEPTION);
-  check_int ("signgam for lgamma(0) == 1", signgam, 1, 0, 0, 0);
-  TEST_f_f (lgamma, minus_zero, plus_infty, DIVIDE_BY_ZERO_EXCEPTION);
-  check_int ("signgam for lgamma(-0) == -1", signgam, -1, 0, 0, 0);
-  TEST_f_f (lgamma, qnan_value, qnan_value);
+  TEST_f_f1 (lgamma, plus_infty, plus_infty, 1);
+  TEST_f_f1 (lgamma, 0, plus_infty, 1, DIVIDE_BY_ZERO_EXCEPTION);
+  TEST_f_f1 (lgamma, minus_zero, plus_infty, -1, DIVIDE_BY_ZERO_EXCEPTION);
+  TEST_f_f1 (lgamma, qnan_value, qnan_value, IGNORE);
 
   /* lgamma (x) == +inf plus divide by zero exception for integer x <= 0.  */
-  TEST_f_f (lgamma, -3, plus_infty, DIVIDE_BY_ZERO_EXCEPTION|ERRNO_ERANGE);
-  TEST_f_f (lgamma, minus_infty, plus_infty);
-  TEST_f_f (lgamma, -max_value, plus_infty, DIVIDE_BY_ZERO_EXCEPTION);
-  TEST_f_f (lgamma, max_value, plus_infty, OVERFLOW_EXCEPTION);
+  TEST_f_f1 (lgamma, -3, plus_infty, IGNORE, DIVIDE_BY_ZERO_EXCEPTION|ERRNO_ERANGE);
+  TEST_f_f1 (lgamma, minus_infty, plus_infty, IGNORE);
+  TEST_f_f1 (lgamma, -max_value, plus_infty, IGNORE, DIVIDE_BY_ZERO_EXCEPTION);
+  TEST_f_f1 (lgamma, max_value, plus_infty, 1, OVERFLOW_EXCEPTION);
 
   TEST_f_f1 (lgamma, 1, 0, 1);