Revert "use time comparion functions"

This reverts commit 2d0ae6b82b.

Possibly not use this for relative timestamps.

examples/client.c

@@ -1112,8 +1112,7 @@ main(int argc, char **argv) {
     nextpdu = coap_peek_next( ctx );
 
     coap_ticks(&now);
-    while (nextpdu && 
-	   coap_time_le(nextpdu->t, now - ctx->sendqueue_basetime)) {
+    while (nextpdu && nextpdu->t <= now - ctx->sendqueue_basetime) {
       coap_retransmit( ctx, coap_pop_next( ctx ));
       nextpdu = coap_peek_next( ctx );
     }

examples/server.c

@@ -398,12 +398,12 @@ main(int argc, char **argv) {
     nextpdu = coap_peek_next( ctx );
 
     coap_ticks(&now);
-    while (nextpdu && coap_time_le(nextpdu->t, now - ctx->sendqueue_basetime)) {
+    while (nextpdu && nextpdu->t <= now - ctx->sendqueue_basetime) {
       coap_retransmit( ctx, coap_pop_next( ctx ) );
       nextpdu = coap_peek_next( ctx );
     }
 
-    if (nextpdu && coap_time_le(nextpdu->t, COAP_RESOURCE_CHECK_TIME)) {
+    if ( nextpdu && nextpdu->t <= COAP_RESOURCE_CHECK_TIME ) {
       /* set timeout if there is a pdu to send before our automatic timeout occurs */
       tv.tv_usec = ((nextpdu->t) % COAP_TICKS_PER_SECOND) * 1000000 / COAP_TICKS_PER_SECOND;
       tv.tv_sec = (nextpdu->t) / COAP_TICKS_PER_SECOND;

net.c

@@ -101,7 +101,7 @@ coap_insert_node(coap_queue_t **queue, coap_queue_t *node) {
 
   /* replace queue head if PDU's time is less than head's time */
   q = *queue;
-  if (coap_time_lt(node->t, q->t)) {
+  if (node->t < q->t) {
     node->next = q;
     *queue = node;
     q->t -= node->t;		/* make q->t relative to node->t */
@@ -113,7 +113,7 @@ coap_insert_node(coap_queue_t **queue, coap_queue_t *node) {
     node->t -= q->t;		/* make node-> relative to q->t */
     p = q;
     q = q->next;
-  } while (q && coap_time_le(q->t, node->t));
+  } while (q && q->t <= node->t);
 
   /* insert new item */
   if (q) {
@@ -547,7 +547,7 @@ coap_send_confirmed(coap_context_t *context,
     node->t = node->timeout;
     context->sendqueue_basetime = now;
   } else {
-    assert(coap_time_le(context->sendqueue_basetime,now));
+    assert(context->sendqueue_basetime <= now);
     /* make node->t relative to context->sendqueue_basetime */
     node->t = now + node->timeout - context->sendqueue_basetime;
   }