Message118114
| Author |
mark.dickinson |
| Recipients |
Aahz, aahz, amaury.forgeotdarc, mark.dickinson, pitrou, rhettinger, stutzbach |
| Date |
2010年10月07日.15:53:47 |
| SpamBayes Score |
6.611091e-05 |
| Marked as misclassified |
No |
| Message-id |
<1286466829.35.0.619674254513.issue10044@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
+#define _PyLong_IS_SMALL_INT(v) \
+ (((PyLongObject *)(v)) >= _PyLong_small_ints && \
+ ((PyLongObject *)(v)) < _PyLong_SMALL_INTS_END)
+/* These macros purposedly avoid a cast to int, since it is most of time
+ useless, and sometimes detrimental (because of truncation).
+ XXX _PyLong_AS_SMALL_INT might be slower if sizeof(PyLongObject) is not
+ a power of two.
+ */
Urk! This is nasty. :(
I don't think arbitrary comparisons of pointers give well-defined results, unless those pointers both happen to point into the same array. (Might be wrong; I don't have a copy of the C standard to hand.) |
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