From cbbf7a9cf57a6c26870ca13c025044e772b7609f Mon Sep 17 00:00:00 2001
From: Brett <brettmaster1@gmail.com>
Date: Tue, 16 Jul 2024 23:45:02 -0400
Subject: [PATCH] fix stack completely, tests are passed

---
 CMakeLists.txt                      |  2 +-
 examples/pg_symbolic_regression.cpp | 15 +++++++++------
 include/blt/gp/config.h             |  2 +-
 include/blt/gp/stack.h              |  2 +-
 4 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a53aaa3..abbfd4d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.25)
-project(blt-gp VERSION 0.0.87)
+project(blt-gp VERSION 0.0.88)
 
 include(CTest)
 
diff --git a/examples/pg_symbolic_regression.cpp b/examples/pg_symbolic_regression.cpp
index 0dbcf00..de19f13 100644
--- a/examples/pg_symbolic_regression.cpp
+++ b/examples/pg_symbolic_regression.cpp
@@ -34,7 +34,10 @@ std::array<context, 200> fitness_cases;
 blt::gp::prog_config_t config = blt::gp::prog_config_t()
         .set_initial_min_tree_size(2)
         .set_initial_max_tree_size(6)
-        .set_elite_count(0)
+        .set_elite_count(10)
+        .set_crossover_chance(0.9)
+        .set_mutation_chance(0.1)
+        .set_reproduction_chance(0.1)
         .set_max_generations(50)
         .set_pop_size(500)
         .set_thread_count(0);
@@ -103,10 +106,10 @@ int main()
     builder.add_operator(sub);
     builder.add_operator(mul);
     builder.add_operator(pro_div);
-    builder.add_operator(op_sin);
-    builder.add_operator(op_cos);
-    builder.add_operator(op_exp);
-    builder.add_operator(op_log);
+    //builder.add_operator(op_sin);
+    //builder.add_operator(op_cos);
+    //builder.add_operator(op_exp);
+    //builder.add_operator(op_log);
     
     builder.add_operator(lit, true);
     builder.add_operator(op_x);
@@ -121,7 +124,7 @@ int main()
     {
         BLT_TRACE("------------{Begin Generation %ld}------------", program.get_current_generation());
         BLT_START_INTERVAL("Symbolic Regression", "Gen");
-        program.create_next_generation(blt::gp::select_tournament_t{}, blt::gp::select_tournament_t{}, blt::gp::select_tournament_t{});
+        program.create_next_generation(blt::gp::select_fitness_proportionate_t{}, blt::gp::select_fitness_proportionate_t{}, blt::gp::select_fitness_proportionate_t{});
         BLT_END_INTERVAL("Symbolic Regression", "Gen");
         BLT_TRACE("Move to next generation");
         BLT_START_INTERVAL("Symbolic Regression", "Fitness");
diff --git a/include/blt/gp/config.h b/include/blt/gp/config.h
index a1682a3..fb91439 100644
--- a/include/blt/gp/config.h
+++ b/include/blt/gp/config.h
@@ -39,7 +39,7 @@ namespace blt::gp
         // percent chance that we will do mutation
         double mutation_chance = 0.1;
         // percent chance we will do reproduction (copy individual)
-        double reproduction_chance = 0;
+        double reproduction_chance = 0.1;
         // everything else will just be selected
         
         blt::size_t elites = 0;
diff --git a/include/blt/gp/stack.h b/include/blt/gp/stack.h
index 88acd32..e4896d0 100644
--- a/include/blt/gp/stack.h
+++ b/include/blt/gp/stack.h
@@ -418,7 +418,6 @@ namespace blt::gp
             
             ~stack_allocator()
             {
-                free_chain(head);
                 if (head != nullptr)
                 {
                     auto blk = head->metadata.next;
@@ -429,6 +428,7 @@ namespace blt::gp
                         std::free(ptr);
                     }
                 }
+                free_chain(head);
             }
             
             template<typename T>