Revert "Minor changes; eval code was play tested as ~even."

This reverts commit f03bcac9ce3c6542310010bfbef2b126bb6ae861.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

1 files changed, 36 insertions, 21 deletions

diff --git a/src/main.c b/src/main.c
index bde1801..89d41f4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -49,7 +49,7 @@ Return value:
     char *p;
 
     Trace("Typhoon %s (built on %s %s, commit %s):\n", VERSION, __DATE__, __TIME__, GIT_COMMIT);
-    Trace("    Copyright (C) 2000-2026, Scott Gasch ([email protected])\n");
+    Trace("    Copyright (C) 2000-2007, Scott Gasch ([email protected])\n");
     Trace("    " REVISION);
     Trace("    " COMPILER_STRING);
     Trace("    Make profile used: %s\n", PROFILE);
@@ -72,7 +72,13 @@ Return value:
     Trace("    Evaluation timing\n");
 #endif
 #ifdef PERF_COUNTERS
-    Trace("    Performance counters enabled\n");
+    Trace("    Performance counters\n");
+#ifdef TEST_NULL
+    Trace("    Testing nullmove prediction algorithms\n");
+#endif
+#endif
+#ifdef DUMP_TREE
+    Trace("    Search tree dumpfile generation enabled\n");
 #endif
     Trace("    Hash sizes: %u Mb (main), %u Mb / thread (pawn)\n",
           (g_uHashTableSizeEntries * sizeof(HASH_ENTRY)) / MB,
@@ -144,7 +150,12 @@ Return value:
         return(FALSE);
     }
 
-    // If the logfile we want to write already exists, just append to it.
+    // If the logfile we want to write already exists, back it up.
+    if (TRUE == SystemDoesFileExist(g_Options.szLogfile)) {
+        VERIFY(BackupFile(g_Options.szLogfile));
+    }
+    ASSERT(FALSE == SystemDoesFileExist(g_Options.szLogfile));
+
     g_pfLogfile = fopen(g_Options.szLogfile, "wb+");
     if (NULL == g_pfLogfile) {
         Trace("WARNING: Can't open logfile %s for write (%s); "
@@ -441,19 +452,23 @@ Return value:
 
 **/
 {
-    // 2026-09-16 diagnostic: allow forcing a fixed srand seed via
-    // TYPHOON_SEED for reproducing a specific run bit-for-bit
-    // (there's no --seed command-line flag) -- e.g. re-running the
-    // same debug_smoke_test.sh repro file to check whether a
-    // failure is deterministic or a genuine SMP timing race.
-    // TEMPORARY: revert once the split.c investigation is done,
-    // this isn't meant to be a permanent CLI feature.
-    const char *pszForcedSeed = getenv("TYPHOON_SEED");
-    unsigned int uSeed = pszForcedSeed ?
-        (unsigned int)strtoul(pszForcedSeed, NULL, 10) :
-        (unsigned int)time(0);
-    srand(uSeed);
+    {
+        // 2026-09-16 diagnostic: allow forcing a fixed srand seed via
+        // TYPHOON_SEED for reproducing a specific run bit-for-bit
+        // (there's no --seed command-line flag) -- e.g. re-running the
+        // same debug_smoke_test.sh repro file to check whether a
+        // failure is deterministic or a genuine SMP timing race.
+        // TEMPORARY: revert once the split.c investigation is done,
+        // this isn't meant to be a permanent CLI feature.
+        const char *pszForcedSeed = getenv("TYPHOON_SEED");
+        unsigned int uSeed = pszForcedSeed ?
+            (unsigned int)strtoul(pszForcedSeed, NULL, 10) :
+            (unsigned int)time(0);
+        Trace("srand seed: %u\n", uSeed);
+        srand(uSeed);
+    }
     InitializeOptions(argc, argv);
+    InitializeTreeDump();
     InitializeEGTB();
     InitializeSigSystem();
     InitializeInteriorNodeRecognizers();
@@ -473,7 +488,6 @@ Return value:
     InitializeHashSystem();
     InitEval();
 #ifdef MP
-    Trace("        ...Multi-threaded search\n");
     InitializeParallelSearch();
 #endif
     VERIFY(PreGameReset(TRUE));
@@ -678,12 +692,13 @@ void MainProgramLoop() {
     FLAG fPonder;
 
     while (!g_fExitProgram) {
+        
         // Prepare to search or ponder
         memcpy(&pos, GetRootPosition(), sizeof(POSITION));
         fThink = fPonder = FALSE;
         result.eResult = RESULT_IN_PROGRESS;
         result.szDescription[0] = '\0';
-
+        
         // What should we do?
         switch(g_Options.ePlayMode) {
         case I_PLAY_WHITE:
@@ -771,10 +786,10 @@ Return value:
     {
         g_uInputThreadHandle = InitInputSystemWithDedicatedThread();
     }
-
+    
     // Enter the main work loop code...
-    MainProgramLoop();
-
+    MainProgramLoop();  
+    
     // If we get here g_fExitProgram is set -- clean up.
     Trace("MAIN THREAD: thread terminating.\n");
     if (FALSE == MainProgramCleanup())
@@ -782,5 +797,5 @@ Return value:
         Trace("main: Main program cleanup code failed, aborting.\n");
         exit(-1);
     }
-    exit(0);
+    exit(0); 
 }