1e01f41fc6811a3ba9efc853e01a94839f7a91fb
braney
  Thu Mar 31 09:42:58 2011 -0700
add compare routine for cBlocks based on query position
diff --git src/lib/chain.c src/lib/chain.c
index f756f31..a568275 100644
--- src/lib/chain.c
+++ src/lib/chain.c
@@ -24,30 +24,38 @@
 }
 
 void chainFreeList(struct chain **pList)
 /* Free a list of dynamically allocated chain's */
 {
 struct chain *el, *next;
 
 for (el = *pList; el != NULL; el = next)
     {
     next = el->next;
     chainFree(&el);
     }
 *pList = NULL;
 }
 
+int cBlockCmpQuery(const void *va, const void *vb)
+/* Compare to sort based on query start. */
+{
+const struct cBlock *a = *((struct cBlock **)va);
+const struct cBlock *b = *((struct cBlock **)vb);
+return a->qStart - b->qStart;
+}
+
 int cBlockCmpTarget(const void *va, const void *vb)
 /* Compare to sort based on target start. */
 {
 const struct cBlock *a = *((struct cBlock **)va);
 const struct cBlock *b = *((struct cBlock **)vb);
 return a->tStart - b->tStart;
 }
 
 int cBlockCmpBoth(const void *va, const void *vb)
 /* Compare to sort based on query, then target. */
 {
 const struct cBlock *a = *((struct cBlock **)va);
 const struct cBlock *b = *((struct cBlock **)vb);
 int dif;
 dif = a->qStart - b->qStart;