diff --git a/src/ScriptTypes/FunctionScriptType.hpp b/src/ScriptTypes/FunctionScriptType.hpp
index 5604c01..03afd9b 100644
--- a/src/ScriptTypes/FunctionScriptType.hpp
+++ b/src/ScriptTypes/FunctionScriptType.hpp
@@ -65,6 +65,13 @@ namespace Porygon {
             this -> RegisterFunctionOption(option);
         };
 
+        explicit GenericFunctionScriptType(const vector<GenericFunctionOption*>& options)
+                : ScriptType(Porygon::TypeClass::Function){
+            for (auto option: options){
+                this -> RegisterFunctionOption(option);
+            }
+        };
+
         ~GenericFunctionScriptType() final{
             for (auto o: *_options){
                 delete o;
@@ -72,9 +79,10 @@ namespace Porygon {
             delete _options;
         }
 
-        void RegisterFunctionOption (GenericFunctionOption * opt) const{
+        const GenericFunctionScriptType* RegisterFunctionOption (GenericFunctionOption * opt) const{
             opt->SetOption(_options->size());
             _options->push_back(opt);
+            return this;
         }
 
         GenericFunctionOption* GetFunctionOption(const vector<shared_ptr<const ScriptType>>& parameters) const{
diff --git a/src/StandardLibraries/BasicLibrary.hpp b/src/StandardLibraries/BasicLibrary.hpp
index d6173a1..cc91eb2 100644
--- a/src/StandardLibraries/BasicLibrary.hpp
+++ b/src/StandardLibraries/BasicLibrary.hpp
@@ -46,7 +46,8 @@ namespace Porygon::StandardLibraries{
             throw Evaluation::EvaluationException(conv);
         }
         static shared_ptr<GenericFunctionScriptType> GetErrorFuncType(){
-            return GetFuncType(make_shared<ScriptType>(TypeClass::Nil), {{make_shared<StringScriptType>(false, 0)}});
+            return GetFuncType(make_shared<ScriptType>(TypeClass::Nil),
+                    {{make_shared<StringScriptType>(false, 0)}});
         }
         //endregion
         //region Print
@@ -206,7 +207,7 @@ namespace Porygon::StandardLibraries{
             values->insert({typeLookup, typeFunc});
 
             // Register IsFloat function
-            auto isFloatFuncType = BasicLibrary::GetTypeFuncType();
+            auto isFloatFuncType = BasicLibrary::GetIsFloatFuncType();
             auto isFloatLookup = Utilities::HashedString::CreateLookup(u"isfloat");
             auto isFloatFunc = BasicLibrary::GetFuncEvalValue(_isFloat, isFloatFuncType, 1);
             bound->insert({isFloatLookup, new Binder::BoundVariable(isFloatFuncType)});
diff --git a/src/StandardLibraries/MathLibrary.hpp b/src/StandardLibraries/MathLibrary.hpp
new file mode 100644
index 0000000..d195be1
--- /dev/null
+++ b/src/StandardLibraries/MathLibrary.hpp
@@ -0,0 +1,63 @@
+#ifndef PORYGONLANG_MATHLIBRARY_HPP
+#define PORYGONLANG_MATHLIBRARY_HPP
+
+#include <utility>
+
+#include "../Evaluator/EvalValues/EvalValue.hpp"
+#include "../Evaluator/EvalValues/NumericEvalValue.hpp"
+
+#include "../UserData/UserDataScriptType.hpp"
+#include "../ScriptTypes/FunctionScriptType.hpp"
+#include "../ScriptTypes/ScriptType.hpp"
+#include "../UserData/UserDataFunctionType.hpp"
+#include "../Evaluator/EvalValues/ScriptFunctionEvalValue.hpp"
+#include "../UserData/UserDataFunction.hpp"
+#include "../Utilities/Random.hpp"
+
+namespace Porygon::StandardLibraries {
+    using namespace Porygon::Evaluation;
+    using namespace Porygon::Utilities;
+    class MathLibrary {
+
+        //region templates
+
+#define FLOAT_TYPE new NumericScriptType(true, true)
+#define INTEGER_TYPE new NumericScriptType(true, false)
+#define FUNCTION(fieldName) \
+        [](void* obj) -> const Porygon::Evaluation::EvalValue* { \
+                auto t = new Porygon::Evaluation::GenericFunctionEvalValue(make_shared<GenericFunctionScriptType>(), \
+                        Porygon::Utilities::Random::Get()); \
+                t->RegisterOption(new Porygon::UserData::UserDataFunction(fieldName, nullptr)); \
+                return t;}, \
+        nullptr
+        //endregion
+
+        static const EvalValue* _abs(void*, const ScriptOptions*, const Evaluation::EvalValue* parameters[], int parameterCount){
+            auto parameter = dynamic_cast<const NumericEvalValue*>(parameters[0]);
+            if (parameter->IsFloat()){
+                return new FloatEvalValue(std::abs(parameter->EvaluateFloat()));
+            } else{
+                return new IntegerEvalValue(std::abs(parameter->EvaluateInteger()));
+            }
+        }
+
+        static UserData::UserDataFunctionOption* CreateFunctionOption(ScriptType* returnType, std::vector<ScriptType*> params){
+            return UserData::UserDataFunctionOption::FromRawPointers(returnType, std::move(params));
+        }
+
+
+    public:
+        static UserData::UserData* CreateUserData(){
+            return new UserData::UserData({
+                {HashedString::ConstHash("abs"),
+                 new UserData::UserDataField(
+                         (new GenericFunctionScriptType())
+                             ->RegisterFunctionOption(CreateFunctionOption(INTEGER_TYPE, {INTEGER_TYPE}))
+                             ->RegisterFunctionOption(CreateFunctionOption(FLOAT_TYPE, {FLOAT_TYPE}))
+                         , FUNCTION(_abs))}
+            });
+        }
+    };
+}
+
+#endif //PORYGONLANG_MATHLIBRARY_HPP
diff --git a/src/StandardLibraries/StaticScope.cpp b/src/StandardLibraries/StaticScope.cpp
index b882c6b..8d5216d 100644
--- a/src/StandardLibraries/StaticScope.cpp
+++ b/src/StandardLibraries/StaticScope.cpp
@@ -1,3 +1,3 @@
 #include "StaticScope.hpp"
 
-Porygon::StandardLibraries::StaticScope::InternalScope Porygon::StandardLibraries::StaticScope::_internal;
\ No newline at end of file
+Porygon::StandardLibraries::StaticScope::InternalScope* Porygon::StandardLibraries::StaticScope::_internal = nullptr;
\ No newline at end of file
diff --git a/src/StandardLibraries/StaticScope.hpp b/src/StandardLibraries/StaticScope.hpp
index 75cbd34..e5febea 100644
--- a/src/StandardLibraries/StaticScope.hpp
+++ b/src/StandardLibraries/StaticScope.hpp
@@ -1,13 +1,16 @@
-#include <utility>
 
 #ifndef PORYGONLANG_STATICSCOPE_HPP
 #define PORYGONLANG_STATICSCOPE_HPP
 
 #include <map>
+#include <utility>
+#include "BasicLibrary.hpp"
+#include "MathLibrary.hpp"
 #include "../Utilities/HashedString.hpp"
 #include "../Binder/BoundVariables/BoundVariable.hpp"
 #include "../Evaluator/EvalValues/EvalValue.hpp"
-#include "BasicLibrary.hpp"
+#include "../UserData/UserDataStorage.hpp"
+#include "../UserData/UserDataValue.hpp"
 
 using namespace std;
 namespace Porygon::StandardLibraries{
@@ -23,6 +26,11 @@ namespace Porygon::StandardLibraries{
 
             InternalScope(){
                 BasicLibrary::RegisterVariables(&_boundVariables, &_variables);
+                auto mathData = MathLibrary::CreateUserData();
+                UserData::UserDataStorage::RegisterType(Utilities::HashedString::ConstHash("__math__"), mathData);
+                auto mathHash = Utilities::HashedString(new u16string(u"math"));
+                _boundVariables.insert({mathHash, new Binder::BoundVariable(make_shared<UserData::UserDataScriptType>(mathData))});
+                _variables.insert({mathHash, new UserData::UserDataValue(mathData, nullptr)});
             }
 
             ~InternalScope(){
@@ -35,23 +43,35 @@ namespace Porygon::StandardLibraries{
             }
         };
 
-        static InternalScope _internal;
+        static InternalScope* _internal;
+
+        inline static InternalScope* GetScope(){
+            if (!_internal)
+                _internal = new InternalScope();
+            return _internal;
+        }
     public:
+
+        ~StaticScope(){
+            delete _internal;
+        }
+
+
         static void RegisterVariable(const Utilities::HashedString& identifier, shared_ptr<ScriptType> type, Evaluation::EvalValue* value){
-            _internal._boundVariables.insert({identifier, new Binder::BoundVariable(std::move(type))});
-            _internal._variables.insert({identifier, value});
+            GetScope()->_boundVariables.insert({identifier, new Binder::BoundVariable(std::move(type))});
+            GetScope()->_variables.insert({identifier, value});
         }
 
         static Binder::BoundVariable* GetBoundVariable(const Utilities::HashedString &identifier){
-            auto found = _internal._boundVariables.find(identifier);
-            if (found != _internal._boundVariables.end()) {
+            auto found = GetScope()->_boundVariables.find(identifier);
+            if (found != GetScope()->_boundVariables.end()) {
                 return found->second;
             }
             return nullptr;
         }
 
         inline static Evaluation::EvalValuePointer GetVariable(const Utilities::HashedString &identifier){
-            return _internal._variables[identifier]->Clone();
+            return GetScope()->_variables[identifier]->Clone();
         }
     };
 }
diff --git a/src/UserData/UserData.hpp b/src/UserData/UserData.hpp
index 326c83a..9da5e97 100644
--- a/src/UserData/UserData.hpp
+++ b/src/UserData/UserData.hpp
@@ -8,7 +8,7 @@
 
 namespace Porygon::UserData {
     class UserData {
-        std::unordered_map<uint32_t, UserDataField *> _fields;
+        std::unordered_map<uint32_t, unique_ptr<UserDataField>> _fields;
 
         // Binary operations
         UserDataBinaryOperation* _addition = nullptr;
@@ -27,14 +27,15 @@ namespace Porygon::UserData {
 
     public:
         explicit UserData(std::unordered_map<uint32_t, UserDataField *> fields)
-            : _fields(std::move(fields))
         {
+            for (auto f: fields){
+                _fields.insert({f.first, unique_ptr<UserDataField>(f.second)});
+            }
         }
 
         ~UserData(){
-            for (auto f: _fields){
-                delete f.second;
-            }
+            _fields.clear();
+
             delete _addition;
             delete _subtraction;
             delete _multiplication;
@@ -57,11 +58,11 @@ namespace Porygon::UserData {
 
         [[nodiscard]]
         inline UserDataField *GetField(uint32_t fieldId) const {
-            return _fields.at(fieldId);
+            return _fields.at(fieldId).get();
         }
 
         inline void CreateField(uint32_t fieldId, UserDataField *field) {
-            _fields.insert({fieldId, field});
+            _fields.insert({fieldId, unique_ptr<UserDataField>(field)});
         }
 
         [[nodiscard]]
diff --git a/src/UserData/UserDataStorage.cpp b/src/UserData/UserDataStorage.cpp
index a52cfb8..5a6a91b 100644
--- a/src/UserData/UserDataStorage.cpp
+++ b/src/UserData/UserDataStorage.cpp
@@ -2,6 +2,6 @@
 #include "UserDataStorage.hpp"
 
 namespace Porygon::UserData {
-    UserDataStorage::_internalDataStorage UserDataStorage::_internal = UserDataStorage::_internalDataStorage();
+    UserDataStorage::_internalDataStorage UserDataStorage::_internal;
     std::mutex UserDataStorage::_userDataMutex;
 }
\ No newline at end of file
diff --git a/src/UserData/UserDataStorage.hpp b/src/UserData/UserDataStorage.hpp
index 605125a..1945d41 100644
--- a/src/UserData/UserDataStorage.hpp
+++ b/src/UserData/UserDataStorage.hpp
@@ -11,16 +11,17 @@ namespace Porygon::UserData {
     private:
         class _internalDataStorage {
         public:
-            std::unordered_map<uint32_t, UserData*> _userData;
+            std::unordered_map<uint32_t, std::unique_ptr<UserData>> _userData;
+
+            _internalDataStorage()
+            : _userData(std::unordered_map<uint32_t, std::unique_ptr<UserData>>(0))
+            {
+            }
 
             ~_internalDataStorage(){
-                for (auto u: _userData){
-                    delete u.second;
-                }
                 _userData.clear();
             }
 
-            _internalDataStorage() = default;
             _internalDataStorage( const UserDataStorage& ) = delete; // non construction-copyable
             _internalDataStorage& operator=( const UserDataStorage& ) = delete; // non copyable
 
@@ -28,19 +29,14 @@ namespace Porygon::UserData {
 
         static _internalDataStorage _internal;
         static std::mutex _userDataMutex;
-
     public:
         static void RegisterType(uint32_t i, UserData *ud) {
             std::lock_guard<std::mutex> guard(_userDataMutex);
-            UserDataStorage::_internal._userData.insert({i, ud});
+            UserDataStorage::_internal._userData.insert({i, std::unique_ptr<UserData>(ud)});
         }
 
-        static void ClearTypes(){
-            std::lock_guard<std::mutex> guard(_userDataMutex);
-            for (auto u: _internal._userData){
-                delete u.second;
-            }
-            _internal._userData.clear();
+        static void RemoveType(uint32_t key){
+            _internal._userData.erase(key);
         }
 
         inline static bool HasUserDataType(uint32_t i) {
@@ -48,7 +44,7 @@ namespace Porygon::UserData {
         }
 
         inline static UserData* GetUserDataType(uint32_t i) {
-            return UserDataStorage::_internal._userData[i];
+            return UserDataStorage::_internal._userData.at(i).get();
         }
     };
 }
diff --git a/tests/integration/ModuleTests.cpp b/tests/integration/ModuleTests.cpp
index d71baa6..6a9739d 100644
--- a/tests/integration/ModuleTests.cpp
+++ b/tests/integration/ModuleTests.cpp
@@ -22,14 +22,20 @@ class ModuleHandler{
             MODULES.clear();
         }
     };
-    static Internal _internal;
+    static Internal* _internal;
+
+    static Internal* GetInternal(){
+        if (!_internal)
+            _internal = new Internal();
+        return _internal;
+    }
 
     inline static bool DoesModuleExist(const string& moduleName){
-        return _internal.MODULES.find(moduleName) != _internal.MODULES.end();
+        return GetInternal()->MODULES.find(moduleName) != GetInternal()->MODULES.end();
     }
 
     inline static Script* ResolveModule(const string& moduleName){
-        return _internal.MODULES[moduleName];
+        return GetInternal()->MODULES[moduleName];
     }
 
 public:
@@ -39,7 +45,7 @@ public:
     }
 };
 
-ModuleHandler::Internal ModuleHandler::_internal;
+ModuleHandler::Internal* ModuleHandler::_internal = nullptr;
 
 TEST_CASE( "Require simple return script", "[integration]" ) {
     ModuleHandler::Initialize();
diff --git a/tests/integration/UserDataTests.cpp b/tests/integration/UserDataTests.cpp
index 6a84ee0..2531e6d 100644
--- a/tests/integration/UserDataTests.cpp
+++ b/tests/integration/UserDataTests.cpp
@@ -65,7 +65,7 @@ end
     delete parameter;
     delete script;
     delete variable;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Sets UserData value", "[integration]" ) {
@@ -84,7 +84,7 @@ end
     REQUIRE(obj->foo == 5000);
     delete obj;
     delete parameter;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Calls UserData function", "[integration]" ) {
@@ -104,7 +104,7 @@ end
     delete obj;
     delete parameter;
     delete result;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Calls UserData function with parameters", "[integration]" ) {
@@ -124,7 +124,7 @@ end
     delete obj;
     delete parameter;
     delete result;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Gets userdata vector value", "[integration]" ) {
@@ -148,7 +148,7 @@ end
     delete result;
     delete script;
     delete func;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Sets userdata vector value", "[integration]" ) {
@@ -170,7 +170,7 @@ end
     delete parameter;
     delete script;
     delete func;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Iterate over userdata vector keys", "[integration]" ) {
@@ -197,7 +197,7 @@ end
     delete script;
     delete func;
     delete result;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 TEST_CASE( "Iterate over userdata vector values", "[integration]" ) {
@@ -224,7 +224,7 @@ end
     delete script;
     delete func;
     delete result;
-    UserDataStorage::ClearTypes();
+    UserDataStorage::RemoveType(HashedString::ConstHash("testObject"));
 }
 
 #endif
diff --git a/tests/standardLibraries/MatLibrary.cpp b/tests/standardLibraries/MatLibrary.cpp
new file mode 100644
index 0000000..ad73b1f
--- /dev/null
+++ b/tests/standardLibraries/MatLibrary.cpp
@@ -0,0 +1,26 @@
+#ifdef TESTS_BUILD
+#include <catch.hpp>
+#include "../src/Script.hpp"
+#include "../../src/ScriptOptions.hpp"
+#include <cstring>
+
+using namespace Porygon;
+
+TEST_CASE( "Abs positive returns positive", "[integration]" ) {
+    Script* script = Script::Create(u"return math.abs(684)");
+    REQUIRE(!script->Diagnostics -> HasErrors());
+    auto result = script -> Evaluate();
+    CHECK(result->EvaluateInteger() == 684);
+    delete script;
+}
+
+TEST_CASE( "Abs negative returns positive", "[integration]" ) {
+    Script* script = Script::Create(u"return math.abs(-684)");
+    REQUIRE(!script->Diagnostics -> HasErrors());
+    auto result = script -> Evaluate();
+    CHECK(result->EvaluateInteger() == 684);
+    delete script;
+}
+
+#endif
+