From: Marco Costalba <mcostalba@gmail.com>
Date: Fri, 15 Apr 2011 15:41:45 +0000 (+0200)
Subject: Better self-document LMR reduction() formula
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=a86057649364547066f65d088809ae490856587b;hp=786564068bb22c750c41649733d4aa6733accaec

Better self-document LMR reduction() formula

Suggested by Onno

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/search.cpp b/src/search.cpp
index ff489c96..6a42cc50 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -216,7 +216,7 @@ namespace {
   int8_t ReductionMatrix[2][64][64]; // [pv][depth][moveNumber]
 
   template <NodeType PV>
-  inline Depth reduction(Depth d, int mn) { return (Depth) ReductionMatrix[PV][Min(d / 2, 63)][Min(mn, 63)]; }
+  inline Depth reduction(Depth d, int mn) { return (Depth) ReductionMatrix[PV][Min(d / ONE_PLY, 63)][Min(mn, 63)]; }
 
   // Easy move margin. An easy move candidate must be at least this much
   // better than the second best move.