From f8a88b6a4aba1f66d04711a9330eaba49a50c463 Mon Sep 17 00:00:00 2001 From: Franciszek Malinka Date: Mon, 24 May 2021 12:40:58 +0200 Subject: update --- Semestr 4/ask/lista11/zad8.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 Semestr 4/ask/lista11/zad8.c (limited to 'Semestr 4/ask/lista11/zad8.c') 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 +#include + +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 -- cgit v1.2.3