kiszk commented on a change in pull request #25804: [SPARK-29096][SQL] The 
exact math method should be called only when there is a corresponding function 
in Math
URL: https://github.com/apache/spark/pull/25804#discussion_r324684533
 
 

 ##########
 File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
 ##########
 @@ -1335,7 +1335,7 @@ case class Cast(child: Expression, dataType: DataType, 
timeZoneId: Option[String
         if ($mathClass.floor($c) <= $max && $mathClass.ceil($c) >= $min) {
           $evPrim = ($integralType) $c;
         } else {
-          throw new ArithmeticException("Casting $c to $integralType causes 
overflow");
+          throw new ArithmeticException("Casting " + $c + " to $integralType 
causes overflow");
 
 Review comment:
   ditto

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