DELTARDCOST      1395 source/common/quant.cpp                             int64_t costUp = DELTARDCOST(origDist, d, rateIncUp[blkPos]);
DELTARDCOST      1402 source/common/quant.cpp                             int64_t costDown = DELTARDCOST(origDist, d, downBits);
DELTARDCOST      1423 source/common/quant.cpp                             curCost = DELTARDCOST(origDist, d, rateIncUp[blkPos] + IEP_RATE + sigRateDelta[blkPos]);