}
// Return the number of times that an element is equal to (i+value)%256 between buf[start] and buf[stop-1].
-static int count_all(uint8_t *buf, size_t start, size_t stop, uint8_t value) {
+static int count_all(const uint8_t* buf, size_t start, size_t stop, uint8_t value)
+{
size_t occ = 0;
for(size_t i = start ; i < stop ; i++) {
if(buf[i] == (i+value)%256) {
}
// Return true iff the values from buf[start] to buf[stop-1] are all equal to (i+value)%256.
-static int check_all(uint8_t *buf, size_t start, size_t stop, uint8_t value) {
+static int check_all(const uint8_t* buf, size_t start, size_t stop, uint8_t value)
+{
size_t occ = count_all(buf, start, stop, value);
return occ == stop-start;
}