diff --git a/bitmanip.c b/bitmanip.c
new file mode 100644
index 0000000..a53118a
--- /dev/null
+++ b/bitmanip.c
@@ -0,0 +1,56 @@
+#include <stdio.h>
+
+/* Define some bits to represent various flags */
+#define BIT_USED  (1U << 0)
+#define BIT_FREE  (1U << 1)
+#define BIT_TAINT (1U << 2)
+#define BIT_DIRTY (1U << 3)
+
+/* Modifies in-place */
+#define BIT_SET_NTH(N, K)    (N |= (1 << (K - 1)));
+#define BIT_CLEAR_NTH(N, K)  (N &= (~(1 << (K - 1))))
+#define BIT_TOGGLE_NTH(N, K) (N ^= (1 << (K - 1)))
+#define BIT_TEST_NTH(N, K)   (N & (1 << (K - 1)))
+
+#define BIT_SET(N, K)    (N |= (K))
+#define BIT_CLEAR(N, K)  (N &= ~(K))
+#define BIT_TOGGLE(N, K) (N ^= (K))
+#define BIT_TEST(N, K)   (N & K)
+
+int main(void) {
+    char flags = 0;
+
+    /* Set a set of flags */
+    flags |= BIT_USED | BIT_TAINT;
+    printf("Flags: %.8b\n", flags);
+
+    /* Unset a set of flags */
+    flags &= ~BIT_USED;
+    printf("Flags: %.8b\n", flags);
+
+    /* Toggle a bit */
+    flags ^= BIT_USED;
+    printf("Flags: %.8b\n", flags);
+
+    if (flags & BIT_USED)
+        printf("Bit is used!\n");
+
+    /* Clear all bits except */
+    flags &= BIT_USED;
+    printf("Flags: %.8b\n", flags);
+
+    /* Wipe flags */
+    flags = 0;
+
+    BIT_TOGGLE(flags, BIT_USED);
+    printf("Flags: %.8b\n", flags);
+
+    BIT_SET(flags, BIT_DIRTY | BIT_TAINT);
+    printf("Flags: %.8b\n", flags);
+
+    if (BIT_TEST(flags, BIT_DIRTY))
+        printf("Bit is dirty!\n");
+
+    BIT_CLEAR(flags, BIT_DIRTY | BIT_USED | BIT_TAINT);
+    printf("Flags: %.8b\n", flags);
+}