1 files changed, 20 insertions, 0 deletions
diff --git a/util.c b/util.c
new file mode 100644
index 0000000..8b13492
--- /dev/null
+++ b/util.c
@@ -0,0 +1,20 @@
+#ifndef UTIL_C_
+#define UTIL_C_
+
+#include "base.h"
+
+static uint util_popcount(u64 x) {
+	// @TODO: portability
+	return (uint)__builtin_popcountll(x);
+}
+
+static bool util_is_power_of_2(u64 x) {
+	return util_popcount(x) == 1;
+}
+
+static void util_zero_memory(void *mem, size_t size) {
+	extern void *memset(void *s, int c, size_t n);
+	memset(mem, 0, size);
+}
+
+#endif