From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sat, 15 Feb 2020 13:50:30 +0000 (+0000)
Subject: comment partial results
X-Git-Tag: ls180-24jan2020~157
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ad114b76aedd83819731df4f8e886cfc9bd3ce06;p=ieee754fpu.git

comment partial results
---

diff --git a/src/ieee754/part_shift/part_shift_dynamic.py b/src/ieee754/part_shift/part_shift_dynamic.py
index 75e3fe49..d991e5f8 100644
--- a/src/ieee754/part_shift/part_shift_dynamic.py
+++ b/src/ieee754/part_shift/part_shift_dynamic.py
@@ -136,7 +136,8 @@ class PartitionedDynamicShift(Elaboratable):
         out = []
 
         # This calculates the outputs o0-o3 from the partial results
-        # table above.
+        # table above.  Note: only relevant bits of the partial result equal
+        # to the width of the output column are accumulated in a Mux-cascade.
         s,e = intervals[0]
         result = partial_results[0]
         out.append(result[s:e])