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authorFranciszek Malinka <franciszek.malinka@gmail.com>2021-10-05 21:49:54 +0200
committerFranciszek Malinka <franciszek.malinka@gmail.com>2021-10-05 21:49:54 +0200
commitc5fcf7179a83ef65c86c6a4a390029149e518649 (patch)
treed29ffc5b86a0d257453cedcf87d91a13d8bf3b0d /semestr-4/ask/lista11/zad8.c
parentf8a88b6a4aba1f66d04711a9330eaba49a50c463 (diff)
Duzy commit ze smieciami
Diffstat (limited to 'semestr-4/ask/lista11/zad8.c')
-rw-r--r--semestr-4/ask/lista11/zad8.c23
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