From 2377523c02eb9eecdc7e0cb4a7eaecd3d1c0a792 Mon Sep 17 00:00:00 2001
From: Alexandre Duret-Lutz <adl@lrde.epita.fr>
Date: Sun, 11 Jan 2015 19:14:32 +0100
Subject: [PATCH] powerset: simplify an implication check

* src/tgbaalgos/powerset.cc: Use bdd_implies.
---
 src/tgbaalgos/powerset.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/tgbaalgos/powerset.cc b/src/tgbaalgos/powerset.cc
index 1ecb5d08b..ca257cf00 100644
--- a/src/tgbaalgos/powerset.cc
+++ b/src/tgbaalgos/powerset.cc
@@ -81,8 +81,8 @@ namespace spot
 	    // Construct the set of all states reachable via COND.
 	    power_state dest;
 	    for (auto s: src)
-	      for (auto si: aut->out(s))
-		if ((cond >> si.cond) == bddtrue)
+	      for (auto& si: aut->out(s))
+		if (bdd_implies(cond, si.cond))
 		  dest.insert(si.dst);
 	    if (dest.empty())
 	      continue;