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Use a third variable of XOR nonsense

This commit is contained in:
James R 2019-12-07 17:03:46 -08:00
parent 5ba363fda6
commit d5816d44f3
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 *