fix: was not multiplying by byte size of ull

src/main.c

@@ -28,7 +28,7 @@ static inline ull pow2_ceil(ull x) {
 
 int main(int argc, char** argv) {
 	// return the result if no input
-	if (argc <= 1) return printf("%s\n", (rand() & 1) ? "heads" : "tails");
+	if (argc <= 1) return printf("%s\n", (clock() & 1) ? "heads" : "tails");
 
 	dynrdat* rdat = NULL;
 
@@ -57,7 +57,8 @@ int main(int argc, char** argv) {
 		}
 
 		// populate the array with random data
-		getrandom(rdat->dat, c + !!mod, 0);
+		if (getrandom(rdat->dat, (c + !!mod) * sizeof(ull), 0) < 0)
+			error(1, "failed to acquire random data!\n", );
 
 		// perform for the input count
 		ull headsc = 0; // amount of heads
@@ -76,7 +77,7 @@ int main(int argc, char** argv) {
 			ull msk = (1 << mod) - 1; // get a mask with the set word size
 			int cnt = __builtin_popcountll(*n & msk);
 			headsc += cnt;
-			tailsc += c - cnt;
+			tailsc += mod - cnt;
 		}
 
 		// print the results of this cycle