diff --git a/mem.c b/mem.c
new file mode 100644
index 0000000..efeb755
--- /dev/null
+++ b/mem.c
@@ -0,0 +1,18 @@
+#include "mem.h"
+#include "types.h"
+
+u32 memcpy(u8* src, u8* dest, const u32 size) {
+	u32 i;
+	for(i =0; i < size+1;i++) {
+		dest[i] = src[i];
+	}
+	return i;
+}
+
+u32 memset(u8* buf, const u8 val, const u32 size) {
+	u32 i;
+	for(i=0;i<size;i++) {
+		buf[i] = val;
+	}
+	return i;
+}
diff --git a/mem.h b/mem.h
new file mode 100644
index 0000000..3029594
--- /dev/null
+++ b/mem.h
@@ -0,0 +1,5 @@
+#include "types.h"
+
+u32 memcpy(u8* src, u8* dest, const u32 size);
+
+u32 memset(u8* buf, const u8 val, const u32 size);
diff --git a/stlio.c b/stlio.c
index 17a117e..93ba317 100644
--- a/stlio.c
+++ b/stlio.c
@@ -45,18 +45,3 @@ void printf(char* fmt) {
 	}
 }
 
-u32 memcpy(u8* src, u8* dest, const u32 size) {
-	u32 i;
-	for(i =0; i < size+1;i++) {
-		dest[i] = src[i];
-	}
-	return i;
-}
-
-u32 memset(u8* buf, const u8 val, const u32 size) {
-	u32 i;
-	for(i=0;i<size;i++) {
-		buf[i] = val;
-	}
-	return i;
-}
diff --git a/stlio.h b/stlio.h
index ab1007d..7912a39 100644
--- a/stlio.h
+++ b/stlio.h
@@ -11,6 +11,3 @@ u32 read(const u32);
 
 void printf(char*);
 
-u32 memcpy(u8* src, u8* dest, const u32 size);
-
-u32 memset(u8* buf, const u8 val, const u32 size);