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-rw-r--r--math/libm-test-cacosh.inc9
1 files changed, 7 insertions, 2 deletions
diff --git a/math/libm-test-cacosh.inc b/math/libm-test-cacosh.inc
index 518cb29..db700b9 100644
--- a/math/libm-test-cacosh.inc
+++ b/math/libm-test-cacosh.inc
@@ -46,8 +46,13 @@ static const struct test_c_c_data cacosh_test_data[] =
TEST_c_c (cacosh, plus_infty, qnan_value, plus_infty, qnan_value),
TEST_c_c (cacosh, minus_infty, qnan_value, plus_infty, qnan_value),
- TEST_c_c (cacosh, 0, qnan_value, qnan_value, qnan_value),
- TEST_c_c (cacosh, minus_zero, qnan_value, qnan_value, qnan_value),
+ /* The sign of the imaginary part of the result is unspecified
+ (see
+ <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2173.htm>),
+ but the libm-test infrastructure does not support describing
+ that. */
+ TEST_c_c (cacosh, 0, qnan_value, qnan_value, lit_pi_2_d),
+ TEST_c_c (cacosh, minus_zero, qnan_value, qnan_value, lit_pi_2_d),
TEST_c_c (cacosh, qnan_value, plus_infty, plus_infty, qnan_value),
TEST_c_c (cacosh, qnan_value, minus_infty, plus_infty, qnan_value),