revert accidental change

yjshen · yjshen · commit 9bd6930c928d · 2015-07-14T15:13:12.000+08:00
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/math.scala
@@ -404,7 +404,11 @@ case class Atan2(left: Expression, right: Expression)
 case class Pow(left: Expression, right: Expression)
   extends BinaryMathExpression(math.pow, "POWER") {
   override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode): String = {
-    defineCodeGen(ctx, ev, (c1, c2) => s"java.lang.Math.pow($c1, $c2)")
+    defineCodeGen(ctx, ev, (c1, c2) => s"java.lang.Math.pow($c1, $c2)") + s"""
+      if (Double.valueOf(${ev.primitive}).isNaN()) {
+        ${ev.isNull} = true;
+      }
+      """
   }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -404,7 +404,11 @@ case class Atan2(left: Expression, right: Expression)`
`404`	`404`	`case class Pow(left: Expression, right: Expression)`
`405`	`405`	`extends BinaryMathExpression(math.pow, "POWER") {`
`406`	`406`	`override def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode): String = {`
`407`		`- defineCodeGen(ctx, ev, (c1, c2) => s"java.lang.Math.pow($c1, $c2)")`
	`407`	`+ defineCodeGen(ctx, ev, (c1, c2) => s"java.lang.Math.pow($c1, $c2)") + s"""`
	`408`	`+ if (Double.valueOf(${ev.primitive}).isNaN()) {`
	`409`	`+ ${ev.isNull} = true;`
	`410`	`+ }`
	`411`	`+ """`
`408`	`412`	`}`
`409`	`413`	`}`
`410`	`414`