Revert odd depths razoring

[stockfish] / src / piece.cpp

diff --git a/src/piece.cpp b/src/piece.cpp
index e06b6be2715c8d9d02f142b60d38ee6c8cafcadb..382ed6456312604c73e2ceea1f9ad40b37c9776e 100644 (file)
--- a/src/piece.cpp
+++ b/src/piece.cpp
@@ -7,12 +7,12 @@
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
+
   Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -27,69 +27,19 @@
 #include "piece.h"
 
 
-////
-//// Constants and variables
-////
-
-const int SlidingArray[18] = {
-  0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
-};
-
-const SquareDelta Directions[16][16] = {
-  {DELTA_ZERO},
-  {DELTA_NW, DELTA_NE, DELTA_ZERO},
-  {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
-   DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
-  {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-  {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
-  {DELTA_S, DELTA_E, DELTA_W, DELTA_N, 
-   DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-  {DELTA_S, DELTA_E, DELTA_W, DELTA_N, 
-   DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-  {DELTA_ZERO},
-  {DELTA_ZERO},
-  {DELTA_SW, DELTA_SE, DELTA_ZERO},
-  {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
-   DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
-  {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-  {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
-  {DELTA_S, DELTA_E, DELTA_W, DELTA_N, 
-   DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-  {DELTA_S, DELTA_E, DELTA_W, DELTA_N, 
-   DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-};   
-
-const SquareDelta PawnPush[2] = {
-  DELTA_N, DELTA_S
-};
-
-
 ////
 //// Functions
 ////
 
-/// Translating piece types to/from English piece letters:
+/// Translating piece types to/from English piece letters
 
 static const char PieceChars[] = " pnbrqk";
 
-char piece_type_to_char(PieceType pt, bool upcase) {
+int piece_type_to_char(PieceType pt, bool upcase) {
   return upcase? toupper(PieceChars[pt]) : PieceChars[pt];
 }
 
 PieceType piece_type_from_char(char c) {
-  const char *ch = strchr(PieceChars, tolower(c));
+  const char* ch = strchr(PieceChars, tolower(c));
   return ch? PieceType(ch - PieceChars) : NO_PIECE_TYPE;
 }
-
-
-/// piece_is_ok() and piece_type_is_ok(), for debugging:
-
-bool piece_is_ok(Piece pc) {
-  return
-    piece_type_is_ok(type_of_piece(pc)) &&
-    color_is_ok(color_of_piece(pc));
-}
-
-bool piece_type_is_ok(PieceType pc) {
-  return pc >= PAWN && pc <= KING;
-}