gistfile1.h

 int whichSet = -1;
    int wordBase = word;
    int i;
    int hit = 0;
    
    while(1) {
	if (wordBase % cache->blockSizeInWords == 0)
	    break;
	wordBase--;
    }

    whichSet = (wordBase / cache->blockSizeInWords) % cache->numSets;

    /* Determine if the requested instruction/word is a hit */
    
    for (i=0; i<cache->blocksPerSet; i++) {
	int blockWord = cache->cacheElt[whichSet][i].addr;

	if (wordBase == blockWord && cache->cacheElt[whichSet][i].valid) {
	    hit = 1;
	    cache->cacheElt[whichSet][i].LRUnum = 1;