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| author | Mark Dickinson <mdickinson@enthought.com> | 2012-11-17 20:18:52 (GMT) |
|---|---|---|
| committer | Mark Dickinson <mdickinson@enthought.com> | 2012-11-17 20:18:52 (GMT) |
| commit | 115bc79df857a1b36db9b9d0df4d1a38cff97901 (patch) | |
| tree | 4d95102c9e3b02ddcf1a8d32208be45bdee8e20f /Objects | |
| parent | e3ae321222c32d64232c46e4062082effec79bcf (diff) | |
| download | cpython-115bc79df857a1b36db9b9d0df4d1a38cff97901.zip cpython-115bc79df857a1b36db9b9d0df4d1a38cff97901.tar.gz cpython-115bc79df857a1b36db9b9d0df4d1a38cff97901.tar.bz2 | |
Issue #9742: Sneaky fix for build failure on Solaris 9.
Diffstat (limited to 'Objects')
| -rw-r--r-- | Objects/floatobject.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Objects/floatobject.c b/Objects/floatobject.c index 30f7b34..ba867ef 100644 --- a/Objects/floatobject.c +++ b/Objects/floatobject.c @@ -1088,6 +1088,15 @@ _Py_double_round(double x, int ndigits) { PyObject *result = NULL; _Py_SET_53BIT_PRECISION_HEADER; + /* Easy path for the common case ndigits == 0. */ + if (ndigits == 0) { + rounded = round(x); + if (fabs(rounded - x) == 0.5) + /* halfway between two integers; use round-away-from-zero */ + rounded = x + (x > 0.0 ? 0.5 : -0.5); + return PyFloat_FromDouble(rounded); + } + /* The basic idea is very simple: convert and round the double to a decimal string using _Py_dg_dtoa, then convert that decimal string back to a double with _Py_dg_strtod. There's one minor difficulty: |