From ba160f660f65e9255f30ab63a6215dfe0930cc08 Mon Sep 17 00:00:00 2001
From: Franck Dary <franck.dary@lis-lab.fr>
Date: Sun, 21 Jul 2019 16:04:12 +0200
Subject: [PATCH] Changed hash method
---
transition_machine/src/Config.cpp | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/transition_machine/src/Config.cpp b/transition_machine/src/Config.cpp
index 69c3b50..c741a14 100644
--- a/transition_machine/src/Config.cpp
+++ b/transition_machine/src/Config.cpp
@@ -437,17 +437,12 @@ void Config::addToEntropyHistory(float entropy)
std::size_t Config::computeHash()
{
- static int window = 10;
-
- int start = std::max(0, head-window);
- int end = std::min(tapes[0].refSize()-1, head+window);
-
- std::hash<std::string> hasher;
+ static std::hash<std::string> strhasher;
+ static std::hash<int> inthasher;
std::size_t result = 0;
- for (int i = start; i < end; i++)
- for (auto & tape : tapes)
- result ^= (hasher(tape[i-head])*0x9e3779b9+(result << 6)+(result >>2));
+ result ^= (strhasher(currentStateName)*0x9e3779b9+(result << 6)+(result >>2));
+ result ^= (inthasher(getHead())*0x9e3779b9+(result << 6)+(result >>2));
return result;
}
--
GitLab