words64 reverse endianness check significant bytes

HerodotusDev · Oct 24, 2023 · d77a8e6 · d77a8e6
1 parent 9df8908
commit d77a8e6
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/utils/types/words64.cairo b/src/utils/types/words64.cairo
@@ -173,7 +173,10 @@ fn bytes_used_u64(val: u64) -> usize {
 // @return The reversed value
 fn reverse_endianness_u64(input: u64, significant_bytes: Option<u32>) -> u64 {
     let sb = match significant_bytes {
-        Option::Some(x) => x,
+        Option::Some(x) => {
+            assert(x <= 8, 'Invalid significant bytes');
+            x
+        },
         Option::None(()) => 8
     };