From 48f38f3092626f0dfef3728568ad5d85ca6c2f92 Mon Sep 17 00:00:00 2001
From: Marco Costalba <mcostalba@gmail.com>
Date: Thu, 24 Oct 2013 20:38:02 +0200
Subject: [PATCH] Retire mirror()

Inline the only caller site.

No functional change.
---
 src/endgame.cpp | 2 +-
 src/types.h     | 4 ----
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/endgame.cpp b/src/endgame.cpp
index e52f9939..6ead680b 100644
--- a/src/endgame.cpp
+++ b/src/endgame.cpp
@@ -72,7 +72,7 @@ namespace {
     assert(pos.count<PAWN>(strongSide) == 1);
 
     if (file_of(pos.list<PAWN>(strongSide)[0]) >= FILE_E)
-        sq = mirror(sq);
+        sq = Square(sq ^ 7); // Mirror SQ_H1 -> SQ_A1
 
     if (strongSide == BLACK)
         sq = ~sq;
diff --git a/src/types.h b/src/types.h
index 26de44e1..bcf3da5c 100644
--- a/src/types.h
+++ b/src/types.h
@@ -371,10 +371,6 @@ inline Rank rank_of(Square s) {
   return Rank(s >> 3);
 }
 
-inline Square mirror(Square s) {
-  return Square(s ^ 7); // Horizontal flip SQ_A1 -> SQ_H1
-}
-
 inline Square relative_square(Color c, Square s) {
   return Square(s ^ (c * 56));
 }
-- 
2.39.2