From: Marco Costalba <mcostalba@gmail.com>
Date: Sat, 15 Nov 2014 04:36:49 +0000 (+0100)
Subject: Use DEPTH_MAX instead of MAX_PLY
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=4840643fedbfc33d118cdc13c8435b062e3da99b;hp=4739037f967ac3c818907e89cc88c7b97021d027

Use DEPTH_MAX instead of MAX_PLY

When comparing to a Depth it is more
consistent to use DEPTH_MAX instead
of a int.

This is a subtle difference because we use
ply and depth almost interchangably in SF,
but they are different. FOr counting plies
makes ense to continue using ints, while
for Depth we have our specific enum.

This cleanly fixes a new Clang 3.5 warning:

No functional change.
---

diff --git a/src/search.cpp b/src/search.cpp
index 376705d1..ccea71ca 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -255,7 +255,7 @@ namespace {
     multiPV = std::max(multiPV, skill.candidates_size());
 
     // Iterative deepening loop until requested to stop or target depth reached
-    while (++depth < MAX_PLY && !Signals.stop && (!Limits.depth || depth <= Limits.depth))
+    while (++depth < DEPTH_MAX && !Signals.stop && (!Limits.depth || depth <= Limits.depth))
     {
         // Age out PV variability metric
         BestMoveChanges *= 0.5;
diff --git a/src/types.h b/src/types.h
index 94be8338..d725c136 100644
--- a/src/types.h
+++ b/src/types.h
@@ -212,7 +212,8 @@ enum Depth {
   DEPTH_QS_NO_CHECKS  = -1,
   DEPTH_QS_RECAPTURES = -5,
 
-  DEPTH_NONE = -6
+  DEPTH_NONE = -6,
+  DEPTH_MAX  = MAX_PLY
 };
 
 enum Square {