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| author | Mark H Weaver <mhw@netris.org> | 2015-07-22 20:56:18 -0400 |
|---|---|---|
| committer | Andy Wingo <wingo@pobox.com> | 2016-05-22 19:29:38 +0200 |
| commit | aa13da51892de89d3acdb84dce11699597a9fe05 (patch) | |
| tree | 95405e2cb1548750f199fbfeaa92e467c9584886 /libguile | |
| parent | ea8fa622ecc6e05520c21616b52949049d94f8a0 (diff) | |
Fix atan procedure when applied to complex numbers.
Fixes a regression introduced in commit
ad79736c68a803a59814fbfc0cb4b092c2b4cddf.
* libguile/numbers.c (scm_atan): Fix the complex case.
* test-suite/tests/numbers.test ("atan"): Add test.
Diffstat (limited to 'libguile')
| -rw-r--r-- | libguile/numbers.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libguile/numbers.c b/libguile/numbers.c index 9cc72d269..d0f6e628d 100644 --- a/libguile/numbers.c +++ b/libguile/numbers.c @@ -8993,8 +8993,8 @@ SCM_PRIMITIVE_GENERIC (scm_atan, "atan", 1, 1, 0, double v, w; v = SCM_COMPLEX_REAL (z); w = SCM_COMPLEX_IMAG (z); - return scm_divide (scm_log (scm_divide (scm_c_make_rectangular (v, w - 1.0), - scm_c_make_rectangular (v, w + 1.0))), + return scm_divide (scm_log (scm_divide (scm_c_make_rectangular (-v, 1.0 - w), + scm_c_make_rectangular ( v, 1.0 + w))), scm_c_make_rectangular (0, 2)); } else |