INDEXWIDTH
#define INDEXSIZE (1<<INDEXWIDTH)
v = (long)i<<(HASHWIDTH-INDEXWIDTH);
t = h>>(HASHWIDTH-INDEXWIDTH);
sum = (long)t<<(HASHWIDTH-INDEXWIDTH);
if ((t = h >> (HASHWIDTH - INDEXWIDTH)) != u) {
k = (long)t<<(HASHWIDTH-INDEXWIDTH);