diff --git a/src/error.h b/src/error.h
index 55cc82c..c5a4430 100644
--- a/src/error.h
+++ b/src/error.h
@@ -5,18 +5,17 @@
 #if __INCLUDE_LEVEL__ > 0
 #include <stdio.h>
 #include <stdlib.h>
+
+#include "util/macro.h"
 #endif
 
-#define ERROR_STR_PRE(v) #v
-#define ERROR_STR(v)     ERROR_STR_PRE(v)
+#define debug(s, ...) printf("\033[95m" __FILE__ ":" MACRO_STR2(__LINE__) ": [DBG]: " s "\033[0m\n", ##__VA_ARGS__)
+#define info(s, ...)  printf(__FILE__ ":" MACRO_STR2(__LINE__) ": [INF]: " s "\n", ##__VA_ARGS__)
+#define warn(s, ...)  fprintf(stderr, "\033[93m" __FILE__ ":" MACRO_STR2(__LINE__) ": [WAR]: " s "\033[0m\n", ##__VA_ARGS__)
+#define error(s, ...) fprintf(stderr, "\033[91m" __FILE__ ":" MACRO_STR2(__LINE__) ": [ERR]: " s "\033[0m\n", ##__VA_ARGS__)
 
-#define debug(s, ...)    printf("\033[95m" __FILE__ ":" ERROR_STR(__LINE__) ": [DBG]: " s "\033[0m\n", ##__VA_ARGS__)
-#define info(s, ...)     printf(__FILE__ ":" ERROR_STR(__LINE__) ": [INF]: " s "\n", ##__VA_ARGS__)
-#define warn(s, ...)     fprintf(stderr, "\033[93m" __FILE__ ":" ERROR_STR(__LINE__) ": [WAR]: " s "\033[0m\n", ##__VA_ARGS__)
-#define error(s, ...)    fprintf(stderr, "\033[91m" __FILE__ ":" ERROR_STR(__LINE__) ": [ERR]: " s "\033[0m\n", ##__VA_ARGS__)
-
-#define fatal(s, ...)                                                                                  \
-	do {                                                                                               \
-		printf("\033[101m" __FILE__ ":" ERROR_STR(__LINE__) ": [FAT]: " s "\033[0m\n", ##__VA_ARGS__); \
-		exit(1);                                                                                       \
+#define fatal(s, ...)                                                                                    \
+	do {                                                                                                 \
+		printf("\033[101m" __FILE__ ":" MACRO_STR2(__LINE__) ": [FAT]: " s "\033[0m\n", ##__VA_ARGS__); \
+		exit(1);                                                                                         \
 	} while (0)
diff --git a/src/util/macro.h b/src/util/macro.h
new file mode 100644
index 0000000..d3f99fb
--- /dev/null
+++ b/src/util/macro.h
@@ -0,0 +1,9 @@
+// Copyright (c) 2025 Quinn
+// Licensed under the MIT Licence. See LICENSE for details
+#pragma once
+
+#define MACRO_WIDTH(t)   (sizeof(t) * 8) // gets the bit width of a type
+#define MACRO_CAT(x, y)  x##y            // concatenate two macro variables together
+#define MACRO_CAT2(x, y) MACRO_CAT(x, y) // concatenate two macro variables together
+#define MACRO_STR(v)     #v              // for converting macro variable into a string
+#define MACRO_STR2(v)    MACRO_STR(v)    // for a recursive string generation
diff --git a/src/util/types.h b/src/util/types.h
new file mode 100644
index 0000000..a43edc7
--- /dev/null
+++ b/src/util/types.h
@@ -0,0 +1,9 @@
+// Copyright (c) 2025 Quinn
+// Licensed under the MIT Licence. See LICENSE for details
+#pragma once
+
+/* integer types */
+typedef unsigned int uint;         // ≥16 bit unsigned integer
+typedef unsigned long ulong;       // ≥32 bit unsigned integer
+typedef signed long long llong;    // ≥64 bit signed integer
+typedef unsigned long long ullong; // ≥64 bit unsigned integer