update

1 files changed, 23 insertions, 0 deletions

diff --git a/Semestr 4/ask/lista11/zad8.c b/Semestr 4/ask/lista11/zad8.c
new file mode 100644
index 0000000..cd8c2bf
--- /dev/null
+++ b/Semestr 4/ask/lista11/zad8.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdint.h>
+
+uint8_t victim(uint8_t s) {
+  s |= ((s & 0x55) << 1) | (s & 0xaa >> 1);
+  return ((s >> 2) && 1) | ((s >> 4) && 2) | ((s >> 6) && 3);
+}
+
+uint8_t update(uint8_t s, uint8_t v) {
+  int8_t p0 = victim(s);
+  int8_t p1 = victim(s ^ 0b01010101);
+  int8_t p2 = victim(s ^ 0b10101010);
+  int8_t p3 = victim(s ^ 0b11111111);
+  uint8_t age = (3 << (v << 1)) & s;
+
+  s -= (~((char)(age - 1) >> 7)) & (1 << (p1 << 1));
+  s -= (~((char)(age - 2) >> 7)) & (1 << (p2 << 1));
+  s -= (~((char)(age - 3) >> 7)) & (1 << (p3 << 1));
+  s |= (3 << (v << 1));
+  return s;
+}
+
+int main() {}
\ No newline at end of file