max 15 comparisons

lib/sync_decim_impl.cc

@@ -139,9 +139,9 @@ namespace gr {
             float out_noskip;
             float out_skip;
             int skip_is_better_counter=0;
-            if (noutput_items>4)//TODO: what if there are never more than 9 outputs requested
+            if (noutput_items>4)//min 4 comparisons TODO: what if there are never more than 4 outputs requested
             {
-              for (int i = 0; i < noutput_items; i++) {//TODO set max loop length -> cpu load
+              for (int i = 0; i < std::max(15,noutput_items); i++) {//max 15 comparisons -> cpu load
                 if(i==0){
                   out_skip=last_input-in[DECIM*i];}
                   else{
@@ -170,7 +170,7 @@ namespace gr {
                 //lout<<"\t,out_skip:"<<out_skip<<std::endl;
                 
               }
-              if (skip_is_better_counter>3){//2017-05-02 lowered from 6
+              if (skip_is_better_counter>3){
   
                 pmt::pmt_t meta(pmt::from_long(4));
                 pmt::pmt_t data(pmt::from_long(SKIP));