viirya commented on code in PR #2740:
URL: https://github.com/apache/arrow-rs/pull/2740#discussion_r973525783


##########
arrow/src/compute/kernels/arithmetic.rs:
##########
@@ -78,6 +80,30 @@ where
     Ok(binary(left, right, op))
 }
 
+/// This is similar to `math_op` as it performs given operation between two 
input primitive arrays.
+/// But the given operation can return `Err` if overflow is detected. For the 
case, this function
+/// returns an `Err`.
+fn math_checked_op<LT, RT, F>(
+    left: &PrimitiveArray<LT>,
+    right: &PrimitiveArray<RT>,
+    op: F,
+) -> Result<PrimitiveArray<LT>>
+where
+    LT: ArrowNumericType,
+    RT: ArrowNumericType,
+    F: Fn(LT::Native, RT::Native) -> Result<LT::Native>,
+    LT::Native: ArrowNativeTypeOp,
+    RT::Native: ArrowNativeTypeOp,
+{
+    if left.len() != right.len() {

Review Comment:
   `math_checked_op` basically is necessary for the type bound.



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