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| author | David S. Miller <davem@davemloft.net> | 2012-11-19 15:26:52 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-19 15:31:24 -0800 |
| commit | 6d33cc9d9bde501e0906c42ee396d42cb4ca603c (patch) | |
| tree | fa106d1ac0b43e69180ba0e497321d56210d4a92 /math | |
| parent | 877f2d8e8def5a278e4b9f4e4dc378f7f8a653b8 (diff) | |
| download | glibc-6d33cc9d9bde501e0906c42ee396d42cb4ca603c.zip glibc-6d33cc9d9bde501e0906c42ee396d42cb4ca603c.tar.gz glibc-6d33cc9d9bde501e0906c42ee396d42cb4ca603c.tar.bz2 | |
Fix spurious underflows in ldbl-128 atan implementation.
With help from Joseph Myers.
* sysdeps/ieee754/ldbl-128/s_atanl.c (__atanl): Handle tiny and
very large arguments properly.
* math/libm-test.inc (atan_test): New tests.
(atan2_test): New tests.
* sysdeps/sparc/fpu/libm-test-ulps: Update.
* sysdeps/x86_64/fpu/libm-test-ulps: Update.
Diffstat (limited to 'math')
| -rw-r--r-- | math/libm-test.inc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/math/libm-test.inc b/math/libm-test.inc index 0b254e1..2a60557 100644 --- a/math/libm-test.inc +++ b/math/libm-test.inc @@ -1187,6 +1187,8 @@ atan_test (void) TEST_f_f (atan, plus_infty, M_PI_2l); TEST_f_f (atan, minus_infty, -M_PI_2l); TEST_f_f (atan, nan_value, nan_value); + TEST_f_f (atan, max_value, M_PI_2l); + TEST_f_f (atan, -max_value, -M_PI_2l); TEST_f_f (atan, 1, M_PI_4l); TEST_f_f (atan, -1, -M_PI_4l); @@ -1295,6 +1297,9 @@ atan2_test (void) TEST_ff_f (atan2, max_value, max_value, M_PI_4l); + TEST_ff_f (atan2, max_value, min_value, M_PI_2l); + TEST_ff_f (atan2, -max_value, -min_value, -M_PI_2l); + TEST_ff_f (atan2, 0.75L, 1, 0.643501108793284386802809228717322638L); TEST_ff_f (atan2, -0.75L, 1.0L, -0.643501108793284386802809228717322638L); TEST_ff_f (atan2, 0.75L, -1.0L, 2.49809154479650885165983415456218025L); |