5772 static void setupSequence( SequenceSpec *pss ){  in setupSequence()  argument
5774   pss->uSeqIndexMax = 0;  in setupSequence()
5775   pss->isNotEOF = 0;  in setupSequence()
5776   bSameSigns = (pss->iBase < 0)==(pss->iTerm < 0);  in setupSequence()
5777   if( pss->iTerm < pss->iBase ){  in setupSequence()
5780       nuspan = (sqlite3_uint64)(pss->iBase - pss->iTerm);  in setupSequence()
5785       nuspan += pss->iBase;  in setupSequence()
5786       nuspan += -(pss->iTerm+1);  in setupSequence()
5788     if( pss->iStep<0 ){  in setupSequence()
5789       pss->isNotEOF = 1;  in setupSequence()
5791         pss->uSeqIndexMax = ( pss->iStep>LLONG_MIN )? nuspan/-pss->iStep : 1;  in setupSequence()
5792       }else if( pss->iStep>LLONG_MIN ){  in setupSequence()
5793         pss->uSeqIndexMax = nuspan/-pss->iStep;  in setupSequence()
5796   }else if( pss->iTerm > pss->iBase ){  in setupSequence()
5799       puspan = (sqlite3_uint64)(pss->iTerm - pss->iBase);  in setupSequence()
5804       puspan += pss->iTerm;  in setupSequence()
5805       puspan += -(pss->iBase+1);  in setupSequence()
5807     if( pss->iStep>0 ){  in setupSequence()
5808       pss->isNotEOF = 1;  in setupSequence()
5809       pss->uSeqIndexMax = puspan/pss->iStep;  in setupSequence()
5811   }else if( pss->iTerm == pss->iBase ){  in setupSequence()
5812       pss->isNotEOF = 1;  in setupSequence()
5813       pss->uSeqIndexMax = 0;  in setupSequence()
5815   pss->uSeqIndexNow = (pss->isReversing)? pss->uSeqIndexMax : 0;  in setupSequence()
5816   pss->iValueNow = (pss->isReversing)  in setupSequence()
5817     ? genSeqMember(pss->iBase, pss->iStep, pss->uSeqIndexMax)  in setupSequence()
5818     : pss->iBase;  in setupSequence()
5826 static int progressSequence( SequenceSpec *pss ){  in progressSequence()  argument
5827   if( !pss->isNotEOF ) return 0;  in progressSequence()
5828   if( pss->isReversing ){  in progressSequence()
5829     if( pss->uSeqIndexNow > 0 ){  in progressSequence()
5830       pss->uSeqIndexNow--;  in progressSequence()
5831       pss->iValueNow -= pss->iStep;  in progressSequence()
5833       pss->isNotEOF = 0;  in progressSequence()
5836     if( pss->uSeqIndexNow < pss->uSeqIndexMax ){  in progressSequence()
5837       pss->uSeqIndexNow++;  in progressSequence()
5838       pss->iValueNow += pss->iStep;  in progressSequence()
5840       pss->isNotEOF = 0;  in progressSequence()
5843   return pss->isNotEOF;  in progressSequence()