Duzy commit ze smieciami

1 files changed, 21 insertions, 0 deletions

diff --git a/semestr-4/ask/zadanie1/rozw.c b/semestr-4/ask/zadanie1/rozw.c
new file mode 100644
index 0000000..068a268
--- /dev/null
+++ b/semestr-4/ask/zadanie1/rozw.c
@@ -0,0 +1,21 @@
+#include <stdint.h>
+#include <stdio.h>
+
+const uint64_t C[] = {
+    0x5555555555555555LL,
+    0x3333333333333333LL,
+    0x0f0f0f0f0f0f0f0fLL,
+    0x00ff00ff00ff00ffLL,
+    0x0000ffff0000ffffLL,
+    0x00000000ffffffffLL
+};
+
+uint64_t revbits(uint64_t x) {
+    x = ((x & C[0]) << 1) | ((x >> 1) & C[0]);
+    x = ((x & C[1]) << 2) | ((x >> 2) & C[1]);
+    x = ((x & C[2]) << 4) | ((x >> 4) & C[2]);
+    x = ((x & C[3]) << 8) | ((x >> 8) & C[3]);
+    x = ((x & C[4]) << 16) | ((x >> 16) & C[4]);
+    x = ((x & C[5]) << 32) | ((x >> 32) & C[5]);
+    return x;
+}
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