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 FPPipeContext
   8
   9 class FPAddStage1Data:
  10
  11     def __init__(self, pspec):
  12         width = pspec['width']
  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         self.ctx = FPPipeContext(pspec)
  18         self.muxid = self.ctx.muxid
  19
  20     def __iter__(self):
  21         yield from self.z
  22         yield self.out_do_z
  23         yield self.oz
  24         yield from self.of
  25         yield from self.ctx
  26
  27     def eq(self, i):
  28         return [self.z.eq(i.z), self.out_do_z.eq(i.out_do_z), self.oz.eq(i.oz),
  29                 self.of.eq(i.of), self.ctx.eq(i.ctx)]