Introduce namespace Bitbases

[stockfish] / src / bitbase.cpp

diff --git a/src/bitbase.cpp b/src/bitbase.cpp
index 9322e537f2837cd2bf2ba6588bda42baa0e3b524..fdfb207ba3be86d786b849af9b126e15513674bb 100644 (file)
--- a/src/bitbase.cpp
+++ b/src/bitbase.cpp
@@ -62,14 +62,14 @@ namespace {
 }
 
 
-uint32_t probe_kpk_bitbase(Square wksq, Square wpsq, Square bksq, Color stm) {
+uint32_t Bitbases::probe_kpk(Square wksq, Square wpsq, Square bksq, Color stm) {
 
   int idx = index(wksq, bksq, wpsq, stm);
   return KPKBitbase[idx / 32] & (1 << (idx & 31));
 }
 
 
-void kpk_bitbase_init() {
+void Bitbases::init_kpk() {
 
   Result db[IndexMax];
   KPKPosition pos;
@@ -196,8 +196,8 @@ namespace {
 
     while (b)
     {
-        r |= Us == WHITE ? db[index(pop_1st_bit(&b), bksq, psq, BLACK)]
-                         : db[index(wksq, pop_1st_bit(&b), psq, WHITE)];
+        r |= Us == WHITE ? db[index(pop_lsb(&b), bksq, psq, BLACK)]
+                         : db[index(wksq, pop_lsb(&b), psq, WHITE)];
 
         if (Us == WHITE && (r & WIN))
             return WIN;