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v0.5.1
https://github.com/python/cpython
Revision 9c4fbdbc55f25a24a0ea137fecee5d880510fa9e authored by Ezio Melotti on 02 August 2010, 02:16:49 UTC, committed by Ezio Melotti on 02 August 2010, 02:16:49 UTC
........ r77871 | ezio.melotti | 2010-01-31 13:46:54 +0200 (Sun, 31 Jan 2010) | 1 line #7092: silence more -3 and -Wd warnings ........ r77910 | ezio.melotti | 2010-02-02 10:37:35 +0200 (Tue, 02 Feb 2010) | 1 line #7092: silence py3k warnings for bsddb. Patch by Florent Xicluna. ........ r77913 | ezio.melotti | 2010-02-02 19:34:37 +0200 (Tue, 02 Feb 2010) | 1 line #7092: Silence py3k warnings in test_exceptions and test_pep352. Patch by Florent Xicluna. ........
1 parent 3897a44
Tip revision: 9c4fbdbc55f25a24a0ea137fecee5d880510fa9e authored by Ezio Melotti on 02 August 2010, 02:16:49 UTC
Unblocked revisions 77871,77910,77913 via svnmerge
Unblocked revisions 77871,77910,77913 via svnmerge
Tip revision: 9c4fbdb
bitset.c
/* Bitset primitives used by the parser generator */
#include "pgenheaders.h"
#include "bitset.h"
bitset
newbitset(int nbits)
{
int nbytes = NBYTES(nbits);
bitset ss = (char *)PyObject_MALLOC(sizeof(BYTE) * nbytes);
if (ss == NULL)
Py_FatalError("no mem for bitset");
ss += nbytes;
while (--nbytes >= 0)
*--ss = 0;
return ss;
}
void
delbitset(bitset ss)
{
PyObject_FREE(ss);
}
int
addbit(bitset ss, int ibit)
{
int ibyte = BIT2BYTE(ibit);
BYTE mask = BIT2MASK(ibit);
if (ss[ibyte] & mask)
return 0; /* Bit already set */
ss[ibyte] |= mask;
return 1;
}
#if 0 /* Now a macro */
int
testbit(bitset ss, int ibit)
{
return (ss[BIT2BYTE(ibit)] & BIT2MASK(ibit)) != 0;
}
#endif
int
samebitset(bitset ss1, bitset ss2, int nbits)
{
int i;
for (i = NBYTES(nbits); --i >= 0; )
if (*ss1++ != *ss2++)
return 0;
return 1;
}
void
mergebitset(bitset ss1, bitset ss2, int nbits)
{
int i;
for (i = NBYTES(nbits); --i >= 0; )
*ss1++ |= *ss2++;
}
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