Bugs item #653542, was opened at 2002-12-14 02:02
Message generated for change (Comment added) made by birkenfeld
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Category: Documentation
Group: None
>Status: Closed
>Resolution: Works For Me
Priority: 5
Submitted By: David Abrahams (david_abrahams)
Assigned to: Nobody/Anonymous (nobody)
Summary: PyLong_AsVoidPtr()/PyLong_FromVoidPtr()
Initial Comment:
These two functions have mutually-recursive definitions
in the docs (which is to say, none).
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>Comment By: Reinhold Birkenfeld (birkenfeld)
Date: 2005-12-26 23:59
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I think the definitions are pretty clear to understand.
PyLong_FromVoidPtr makes a long from a pointer,
PyLong_AsVoidPtr makes a pointer from a long... closing as
Works for Me.
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Comment By: Tim Peters (tim_one)
Date: 2003-09-24 03:25
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Nope. Guido checked them in 5 years ago, in rev 1.48. To
judge from the checkin comment, the code may actually have
come from Greg Stein. I don't have time for it, so unassigning.
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Comment By: Fred L. Drake, Jr. (fdrake)
Date: 2003-09-24 00:00
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Tim, aren't these your babies?
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Comment By: Martin v. Löwis (loewis)
Date: 2002-12-14 17:15
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Something very simple:
PyObject *
PyLong_FromVoidPtr(void *p)
{
#if SIZEOF_VOID_P <= SIZEOF_LONG
return PyInt_FromLong((long)p);
#else
#ifndef HAVE_LONG_LONG
# error "PyLong_FromVoidPtr: sizeof(void*) > sizeof(long),
but no long long"
#endif
#if SIZEOF_LONG_LONG < SIZEOF_VOID_P
# error "PyLong_FromVoidPtr: sizeof(LONG_LONG) < sizeof
(void*)"
#endif
/* optimize null pointers */
if (p == NULL)
return PyInt_FromLong(0);
return PyLong_FromLongLong((LONG_LONG)p);
#endif /* SIZEOF_VOID_P <= SIZEOF_LONG */
}
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Comment By: David Abrahams (david_abrahams)
Date: 2002-12-14 15:37
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Thanks for asking but the problem is that I don't know what
they do!
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Comment By: Martin v. Löwis (loewis)
Date: 2002-12-14 15:15
Message:
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Would you like to provide a patch?
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