From 263a2ed461bee498215259e5e3288acb561ec536 Mon Sep 17 00:00:00 2001
From: lijie <1713699517@qq.com>
Date: Thu, 6 Apr 2023 17:57:37 +0800
Subject: [PATCH] =?UTF-8?q?ft:=20=E6=B5=8B=E8=AF=95=E4=BB=A3=E7=A0=81?=
 =?UTF-8?q?=E6=B7=BB=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 src/testCase/utTpfm.erl | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/testCase/utTpfm.erl b/src/testCase/utTpfm.erl
index 661ed9f..dea77bd 100644
--- a/src/testCase/utTpfm.erl
+++ b/src/testCase/utTpfm.erl
@@ -675,5 +675,18 @@ forB(Index, B, _) ->
    <<_:BIndex/bits, V:3, _/bits>> = B,
    forB(Index - 1, B, V).
 
-
-
+delL(L1, L2) ->
+   L1 -- L2.
+
+delM(M1, M2) ->
+   doDelM(maps:iterator(M2), M1).
+
+doDelM(Iterator, M1) ->
+   case maps:next(Iterator) of
+      {K, _V, none} ->
+         maps:remove(K, M1);
+      {K, _V, NextI} ->
+         doDelM(NextI, maps:remove(K, M1));
+      _ ->
+         M1
+   end.
\ No newline at end of file