AVX2

2023/day1/src/no_lines.rs

@@ -14,7 +14,12 @@ pub unsafe fn part2(input: &str) {
         // in the integer bytes:
         // X X X X X e n o
         // this out of bounds read is UB under SB, but fine under models that don't do provenance narrowing with slices. i dont care enough to fix it.
-        let block = bytes.as_ptr().add(byte_idx).cast::<u64>().read_unaligned().to_le();
+        let block = bytes
+            .as_ptr()
+            .add(byte_idx)
+            .cast::<u64>()
+            .read_unaligned()
+            .to_le();
 
         let one = (block & ((1 << (8 * 1)) - 1)) as u8;
         let three = block & ((1 << (8 * 3)) - 1);