bkietz commented on a change in pull request #10390:
URL: https://github.com/apache/arrow/pull/10390#discussion_r639130532



##########
File path: cpp/src/arrow/compute/kernels/codegen_internal.h
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@@ -1093,6 +1097,41 @@ ArrayKernelExec 
GeneratePhysicalInteger(detail::GetTypeId get_id) {
   }
 }
 
+template <template <typename... Args> class Generator, typename... Args>
+ArrayKernelExec GeneratePhysicalNumeric(detail::GetTypeId get_id) {
+  switch (get_id.id) {
+    case Type::INT8:
+      return Generator<Int8Type, Args...>::Exec;
+    case Type::INT16:
+      return Generator<Int16Type, Args...>::Exec;
+    case Type::INT32:
+    case Type::DATE32:
+    case Type::TIME32:
+      return Generator<Int32Type, Args...>::Exec;
+    case Type::INT64:
+    case Type::DATE64:
+    case Type::TIMESTAMP:
+    case Type::TIME64:
+    case Type::DURATION:
+      return Generator<Int64Type, Args...>::Exec;
+    case Type::UINT8:
+      return Generator<UInt8Type, Args...>::Exec;
+    case Type::UINT16:
+      return Generator<UInt16Type, Args...>::Exec;
+    case Type::UINT32:
+      return Generator<UInt32Type, Args...>::Exec;
+    case Type::UINT64:
+      return Generator<UInt64Type, Args...>::Exec;
+    case Type::FLOAT:
+      return Generator<FloatType, Args...>::Exec;
+    case Type::DOUBLE:
+      return Generator<DoubleType, Args...>::Exec;

Review comment:
       ```suggestion
       case Type::FLOAT:
         return Generator<FloatType, Args...>::Exec;
       case Type::DOUBLE:
         return Generator<DoubleType, Args...>::Exec;
       default:
         return GeneratePhysicalInteger<Generator, Args...>(get_id);
   ```




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