X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=3e396af3032d6e11c2329d15763853f0f4f85b8f;hp=a7e5f2d5b8ccf333c8daf583c664946d2c816a8b;hb=9d5d69e435443cf768be7fdde76070e776db120f;hpb=08265aef81d63b1ccf22e1e1818d0edb64e0528e

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index a7e5f2d5..3e396af3 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -1120,13 +1120,7 @@ namespace {
 
     ev = apply_scale_factor(ev, sf[(ev > Value(0) ? WHITE : BLACK)]);
 
-    // Linearized sigmoid interpolator
-    int sph = int(ph);
-    sph -= (64 - sph) / 4;
-    sph = Min(PHASE_MIDGAME, Max(PHASE_ENDGAME, sph));
-
-    Value result = Value(int((mv * sph + ev * (128 - sph)) / 128));
-
+    Value result = Value(int((mv * ph + ev * (128 - ph)) / 128));
     return Value(int(result) & ~(GrainSize - 1));
   }