from ieee754.fpcommon.fpbase import FPNumDecode, FPNumBaseRecord
-from ieee754.fpcommon.modbase import FPModBase, FPModBaseChain
+from nmutil.pipemodbase import FPModBase, FPModBaseChain
from ieee754.fpcommon.getop import FPADDBaseData
from ieee754.fpcommon.denorm import (FPSCData, FPAddDeNormMod)
from ieee754.fpmul.align import FPAlignModSingle