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Use a third variable of XOR nonsense

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This commit is contained in:
James R 2019-12-07 17:03:46 -08:00
parent dbf83f90c5
commit 3482e147c2
1 changed files with 10 additions and 9 deletions
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19
src/strcasestr.c
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@ -23,13 +23,6 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ */
#define SWAP( a, b ) \
(\
(a) ^= (b),\
(b) ^= (a),\
(a) ^= (b)\
)
static inline int static inline int
trycmp (char **pp, char *cp, trycmp (char **pp, char *cp,
const char *q, size_t qn) const char *q, size_t qn)
@ -45,8 +38,16 @@ trycmp (char **pp, char *cp,
static inline void static inline void
swapp (char ***ppap, char ***ppbp, char **cpap, char **cpbp) swapp (char ***ppap, char ***ppbp, char **cpap, char **cpbp)
{ {
SWAP(*(intptr_t *)ppap, *(intptr_t *)ppbp); char **pp;
SWAP(*(intptr_t *)cpap, *(intptr_t *)cpbp); char *p;
pp = *ppap;
*ppap = *ppbp;
*ppbp = pp;
p = *cpap;
*cpap = *cpbp;
*cpbp = p;
} }
char * char *