Mark all compile-time constants as constexpr.

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index afc4a671251b03c196d1d07a565561158f9524df..176006fcc1073ea837b04b27dcdcc8d3ace22e0e 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -63,12 +63,12 @@ namespace {
   enum NodeType { NonPV, PV };
 
   // Sizes and phases of the skip-blocks, used for distributing search depths across the threads
-  const int SkipSize[]  = { 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4 };
-  const int SkipPhase[] = { 0, 1, 0, 1, 2, 3, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 7 };
+  constexpr int SkipSize[]  = { 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4 };
+  constexpr int SkipPhase[] = { 0, 1, 0, 1, 2, 3, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 7 };
 
   // Razor and futility margins
-  const int RazorMargin1 = 590;
-  const int RazorMargin2 = 604;
+  constexpr int RazorMargin1 = 590;
+  constexpr int RazorMargin2 = 604;
   Value futility_margin(Depth d, bool improving) {
     return Value((175 - 50 * improving) * d / ONE_PLY);
   }