From 7ffb1f122e6e5bf22be2e5398e92c39f7c8f7842 Mon Sep 17 00:00:00 2001
From: Imbus <>
Date: Sat, 27 Dec 2025 02:08:14 +0100
Subject: [PATCH] Bitset

---
 bitset2.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 bitset2.c

diff --git a/bitset2.c b/bitset2.c
new file mode 100644
index 0000000..212fcbe
--- /dev/null
+++ b/bitset2.c
@@ -0,0 +1,15 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#define BITSET_WORD_BITS (sizeof(bitset_word_t) * 8U)
+#define BITSET_WORD(idx) ((uintptr_t *)(bits))[(idx) / BITSET_WORD_BITS]
+#define BITSET_MASK(idx) ((uintptr_t)1 << ((idx) % BITSET_WORD_BITS))
+
+#define BITSET_SET(bits, idx)   (BITSET_WORD(idx) |= BITSET_MASK(idx))
+#define BITSET_CLEAR(bits, idx) (BITSET_WORD(idx) &= ~BITSET_MASK(idx))
+#define BITSET_FLIP(bits, idx)  (BITSET_WORD(idx) ^= BITSET_MASK(idx))
+#define BITSET_TEST(bits, idx)  (!!((BITSET_WORD(idx) & BITSET_MASK(idx)))) /* forces 0/1 */
+// #define BITSET_PUT(bits, idx, v)   do { if (v) BITSET_SET(bits,idx); else BITSET_CLEAR(bits,idx); } while(0)
+int main(void) {
+    return 0;
+}