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| author | Tim Peters <tim.peters@gmail.com> | 2001-09-05 04:33:11 (GMT) |
|---|---|---|
| committer | Tim Peters <tim.peters@gmail.com> | 2001-09-05 04:33:11 (GMT) |
| commit | e5ca6c71cd4a27f855612aeb14e600712cf72e04 (patch) | |
| tree | e6a371b969aff6ed1d755cfa5df3e6c82572c3f0 /Modules | |
| parent | 6fd0f0ac1e65d5c525beaef092464ecd0b8cab5e (diff) | |
| download | cpython-e5ca6c71cd4a27f855612aeb14e600712cf72e04.zip cpython-e5ca6c71cd4a27f855612aeb14e600712cf72e04.tar.gz cpython-e5ca6c71cd4a27f855612aeb14e600712cf72e04.tar.bz2 | |
loghelper(): Try to nudge the compiler into doing mults in an order that
minimizes roundoff error.
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/mathmodule.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c index eef8b78..c206ddc 100644 --- a/Modules/mathmodule.c +++ b/Modules/mathmodule.c @@ -263,7 +263,7 @@ loghelper(PyObject* args, double (*func)(double), char *name) log(x) + log(2) * e * SHIFT. CAUTION: e*SHIFT may overflow using int arithmetic, so force use of double. */ - x = func(x) + func(2.0) * (double)e * (double)SHIFT; + x = func(x) + (e * (double)SHIFT) * func(2.0); return PyFloat_FromDouble(x); } |