Added dependency-injected shuffle function

libkeke_utils.c

@@ -1,17 +1,27 @@
 #include <stddef.h>
 
 void keke_swap(void *a, void *b, size_t size) {
-	char *aa = a;
-	char *bb = b;
-	for(size_t i = 0; i < size; i++) {
+	if(a == b) return;
+	size_t i = 0;
+	int *ia = a;
+	int *ib = b;
+	for(i = 0; i < (size / sizeof(int)); ++i) {
+		ia[i] ^= ib[i];
+		ib[i] ^= ia[i];
+		ia[i] ^= ib[i];
+	}
+	size %= sizeof(int);
+	char *aa = a + (i * sizeof(int));
+	char *bb = b + (i * sizeof(int));
+	for(i = 0; i < size; i++) {
 		aa[i] ^= bb[i];
 		bb[i] ^= aa[i];
 		aa[i] ^= bb[i];
 	}
 }
 
-size_t next_power_of_two(size_t s) {
-	size_t t = 1;
-	while(t < s) t <<= 1;
-	return t;
+size_t bit_ceil(size_t	s) {
+    size_t t = 1;
+    while(t < s) t <<= 1;
+    return t;
 }