src/ieee754/fpcommon/postcalc.py

   1 # IEEE Floating Point Adder (Single Precision)
   2 # Copyright (C) Jonathan P Dawson 2013
   3 # 2013-12-12
   4
   5 from nmigen import Signal
   6 from ieee754.fpcommon.fpbase import Overflow, FPNumBaseRecord
   7 from ieee754.fpcommon.getop import FPBaseData
   8
   9 class FPAddStage1Data(FPBaseData):
  10
  11     def __init__(self, width, id_wid, op_wid=None):
  12         FPBaseData.__init__(self, 0, width, id_wid, op_wid)
  13         self.z = FPNumBaseRecord(width, False)
  14         self.out_do_z = Signal(reset_less=True)
  15         self.oz = Signal(width, reset_less=True)
  16         self.of = Overflow()
  17
  18     def __iter__(self):
  19         yield from self.z
  20         yield self.out_do_z
  21         yield self.oz
  22         yield from self.of
  23         yield from FPBaseData.__iter__(self)
  24
  25     def eq(self, i):
  26         ret = [self.z.eq(i.z), self.out_do_z.eq(i.out_do_z), self.oz.eq(i.oz),
  27               self.of.eq(i.of),] + FPBaseData.eq(self, i)
  28
  29         return ret