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| author | Benjamin Peterson <benjamin@python.org> | 2008-06-17 22:39:26 (GMT) |
|---|---|---|
| committer | Benjamin Peterson <benjamin@python.org> | 2008-06-17 22:39:26 (GMT) |
| commit | c2c5e00d9da5cfb01e2c84043669de3d0c6fe35b (patch) | |
| tree | 59b0b421e491f8634dbac3a98ce2566fde7e1c37 /Modules/mathmodule.c | |
| parent | f9f2982feeee97b15fd3706122e250bfeeb97153 (diff) | |
| download | cpython-c2c5e00d9da5cfb01e2c84043669de3d0c6fe35b.zip cpython-c2c5e00d9da5cfb01e2c84043669de3d0c6fe35b.tar.gz cpython-c2c5e00d9da5cfb01e2c84043669de3d0c6fe35b.tar.bz2 | |
Merged revisions 64349 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r64349 | mark.dickinson | 2008-06-17 16:16:55 -0500 (Tue, 17 Jun 2008) | 4 lines
Issue 3118: make test_math pass on Ubuntu/ia64. exp(-745.0) was raising
OverflowError incorrectly on this platform, presumably as a result of
the libm setting errno = ERANGE for this call.
........
Diffstat (limited to 'Modules/mathmodule.c')
| -rw-r--r-- | Modules/mathmodule.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c index fa607e3..4c820c5 100644 --- a/Modules/mathmodule.c +++ b/Modules/mathmodule.c @@ -82,12 +82,17 @@ is_error(double x) * should return a zero on underflow, and +- HUGE_VAL on * overflow, so testing the result for zero suffices to * distinguish the cases). + * + * On some platforms (Ubuntu/ia64) it seems that errno can be + * set to ERANGE for subnormal results that do *not* underflow + * to zero. So to be safe, we'll ignore ERANGE whenever the + * function result is less than one in absolute value. */ - if (x) + if (fabs(x) < 1.0) + result = 0; + else PyErr_SetString(PyExc_OverflowError, "math range error"); - else - result = 0; } else /* Unexpected math error */ |