From 02f96fcf5ec82ddf4b94f7992acdfb548a7a218c Mon Sep 17 00:00:00 2001
From: Marco Costalba <mcostalba@gmail.com>
Date: Tue, 20 Jul 2010 09:16:16 +0200
Subject: [PATCH] Introduce DEPTH_NONE and use it

Also better fix previous patch.

Suggestions by Joona and Ralph.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---
 src/depth.h    | 4 ++--
 src/search.cpp | 4 ++--
 src/tt.cpp     | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/depth.h b/src/depth.h
index 05008e05..86af1dff 100644
--- a/src/depth.h
+++ b/src/depth.h
@@ -27,8 +27,8 @@
 
 enum Depth {
   DEPTH_ZERO = 0,
-  DEPTH_MAX = 200, // 100 * OnePly;
-  DEPTH_ENSURE_SIGNED = -1
+  DEPTH_MAX = 200,  //  100 * OnePly;
+  DEPTH_NONE = -254 // -127 * OnePly
 };
 
 
diff --git a/src/search.cpp b/src/search.cpp
index 48c06fd3..a3687c07 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1110,7 +1110,7 @@ namespace {
     {
         // Pass ss->eval to qsearch() and avoid an evaluate call
         if (!tte)
-            TT.store(posKey, ss->eval, VALUE_TYPE_EXACT, Depth(-127*OnePly), MOVE_NONE, ss->eval, ei.kingDanger[pos.side_to_move()]);
+            TT.store(posKey, VALUE_NONE, VALUE_TYPE_NONE, DEPTH_NONE, MOVE_NONE, ss->eval, ei.kingDanger[pos.side_to_move()]);
 
         Value rbeta = beta - razor_margin(depth);
         Value v = qsearch<NonPV>(pos, ss, rbeta-1, rbeta, Depth(0), ply);
@@ -1493,7 +1493,7 @@ namespace {
         if (bestValue >= beta)
         {
             if (!tte)
-                TT.store(pos.get_key(), value_to_tt(bestValue, ply), VALUE_TYPE_LOWER, Depth(-127*OnePly), MOVE_NONE, ss->eval, ei.kingDanger[pos.side_to_move()]);
+                TT.store(pos.get_key(), value_to_tt(bestValue, ply), VALUE_TYPE_LOWER, DEPTH_NONE, MOVE_NONE, ss->eval, ei.kingDanger[pos.side_to_move()]);
 
             return bestValue;
         }
diff --git a/src/tt.cpp b/src/tt.cpp
index d2f983c9..1dc97f5d 100644
--- a/src/tt.cpp
+++ b/src/tt.cpp
@@ -175,7 +175,7 @@ void TranspositionTable::insert_pv(const Position& pos, Move pv[]) {
       if (!tte || tte->move() != pv[i])
       {
           v = (p.is_check() ? VALUE_NONE : evaluate(p, ei));
-          store(p.get_key(), VALUE_NONE, VALUE_TYPE_NONE, Depth(-127*OnePly), pv[i], v, ei.kingDanger[pos.side_to_move()]);
+          store(p.get_key(), VALUE_NONE, VALUE_TYPE_NONE, DEPTH_NONE, pv[i], v, ei.kingDanger[pos.side_to_move()]);
       }
       p.do_move(pv[i], st);
   }
-- 
2.39.2