struct slRef *snpsInTag(struct snp **pChromSnps, int pos, int start)
/* Find the SNPs in the next 21 (TAG_SIZE) bases. */
/* chromSnps is sorted so quit search after we go beyond range. */
{
struct slRef *snpList = NULL;
struct snp *chromSnps, *cur;
if (!pChromSnps || !(*pChromSnps))
return NULL;
/* Pop off SNPs until we're at the current position. */
cur = *pChromSnps;
while (((cur = *pChromSnps) != NULL) && (cur->chromStart < (pos + start)))
{
cur = slPopHead(pChromSnps);
snpFree(&cur);
}
cur = *pChromSnps;
while (cur && (cur->chromStart < (pos + TAG_SIZE + start)))
{
if ((cur->chromStart >= pos + start) && (cur->chromStart < (pos + TAG_SIZE + start)))
{
struct slRef *newRef;
AllocVar(newRef);
newRef->val = cur;
slAddHead(&snpList, newRef);
}
cur = cur->next;
}
slReverse(&snpList);
return snpList;
}
void snpFreeList(struct snp **pList)
/* Free a list of dynamically allocated snp's */
{
struct snp *el, *next;
for (el = *pList; el != NULL; el = next)
{
next = el->next;
snpFree(&el);
}
*pList = NULL;
}
