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Use a better NaN test in _Py_HashDouble as well.

This commit is contained in:
Mark Dickinson 2010-04-05 18:54:51 +00:00
parent e1d665a90e
commit 56506a6ed2
1 changed files with 6 additions and 3 deletions
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9
Objects/object.c
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@ -1025,9 +1025,12 @@ _Py_HashDouble(double v)
* of mapping keys will turn out weird. * of mapping keys will turn out weird.
*/ */
if (Py_IS_INFINITY(v)) if (!Py_IS_FINITE(v)) {
/* can't convert to long int -- arbitrary */ if (Py_IS_INFINITY(v))
v = v < 0 ? -271828.0 : 314159.0; return v < 0 ? -271828 : 314159;
else
return 0;
}
fractpart = modf(v, &intpart); fractpart = modf(v, &intpart);
if (fractpart == 0.0) { if (fractpart == 0.0) {
/* This must return the same hash as an equal int or long. */ /* This must return the same hash as an equal int or long. */