From: Marco Costalba <mcostalba@gmail.com>
Date: Thu, 26 Dec 2013 11:08:23 +0000 (+0100)
Subject: Further simplify previous patch
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=14aebe2b7ce1fa3ba7570168115ac3b0077ea97a;hp=cf0a2a26a9e2640dc86b26a998fb7a71a5c20b90

Further simplify previous patch

Use a single XOR instead of NEGATE + AND

No functional change.
---

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 39bd689f..5c7a55be 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -188,7 +188,7 @@ namespace {
     // to file distance between left and right outermost pawns.
     if (pos.count<PAWN>(Us) > 1)
     {
-        b = ~e->semiopenFiles[Us] & 0xFF;
+        b = e->semiopenFiles[Us] ^ 0xFF;
         value += PawnsFileSpan * int(msb(b) - lsb(b));
     }