From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sun, 13 Sep 2020 13:39:57 +0000 (+0100)
Subject: add masked util function
X-Git-Tag: 24jan2021_ls180~19
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b68c8ca23a6c3e6e91b2ee09347504ad237dac56;p=nmutil.git

add masked util function
---

diff --git a/src/nmutil/mask.py b/src/nmutil/mask.py
index 2237522..25fd142 100644
--- a/src/nmutil/mask.py
+++ b/src/nmutil/mask.py
@@ -1,6 +1,9 @@
 from nmigen import Module, Signal, Elaboratable
 from nmigen.utils import log2_int
 
+def masked(m_out, m_in, mask):
+    return (m_out & ~mask) | (m_in & mask)
+
 
 class Mask(Elaboratable):
     def __init__(self, sz):