Initial Commit

1 files changed, 48 insertions, 0 deletions

diff --git a/source/memory.c b/source/memory.c
new file mode 100644
index 0000000..b9d0405
--- /dev/null
+++ b/source/memory.c
@@ -0,0 +1,48 @@
+#include <stdint.h>
+#include "memory.h"
+
+void *memcpy(void *dest, const void *src, const size_t n) {
+    uint8_t *destB = (void *)dest;
+    const uint8_t *srcB = (void *)src;
+
+    for (size_t i = 0; i < n; i++) {
+        destB[i] = srcB[i];
+    }
+
+    return dest;
+}
+
+void *memset(void *s, int c, size_t n) {
+    uint8_t *sB = (uint8_t *)s;
+
+    for (size_t i = 0; i < n; i++) {
+        sB[i] = (uint8_t)c;
+    }
+
+    return s;
+}
+
+void *memmove(void *dest, const void *src, const size_t n) {
+    uint8_t *db = (uint8_t *)dest;
+    const uint8_t *sb = (const uint8_t *)src;
+
+    for (size_t i = n; i > 0; i--) {
+        db[i - 1] = sb[i - 1];
+    }
+
+    return dest;
+}
+
+int memcmp(const void *s1, const void *s2, const size_t n) {
+    const uint8_t *s1b = (const uint8_t *)s1;
+    const uint8_t *s2b = (const uint8_t *)s2;
+
+    for (size_t i = 0; i < n; i++) {
+        if (s1b[i] != s2b[i]) {
+            return ((s1b[i] > s2b[i]) ? 1 : -1);
+        }
+    }
+
+    return 0;
+}
+