zkevm-docs/8-arithmetic.markdown

@@ -148,13 +148,13 @@ constraints
 
 - Mulmod
 
-- Normallength
+- Length
   输入：length,offset,data_size
   输出：normal_length, zero_length
   计算方式：
       以codecopy为例，length:为要copy的长度，offset为bytecode偏移量(即复制起始位置)，data_size为bytecode的总长度
   ```rust
-  fn normal_length(length: u64, offset: u64, data_size: u64) -> (normal_length: u64, zero_length: u64) {
+  fn length(length: u64, offset: u64, data_size: u64) -> (normal_length: u64, zero_length: u64) {
       if offset > data_size {
           return 0, length
       } else if offset + length < data_size {