initial check-in, version 0.5.0

src/string/memmove.c

@@ -0,0 +1,14 @@
+#include <string.h>
+
+void *memmove(void *dest, const void *src, size_t n)
+{
+	char *d = dest;
+	const char *s = src;
+	if (d==s) return d;
+	if ((size_t)(d-s) < n) {
+		while (n--) d[n] = s[n];
+		return dest;
+	}
+	/* Assumes memcpy is overlap-safe when dest < src */
+	return memcpy(d, s, n);
+}