From b453aa20c09c19ddd7bff2ce60f153a630f0b231 Mon Sep 17 00:00:00 2001
From: Max Gekk <max.gekk@gmail.com>
Date: Tue, 14 Apr 2020 20:12:34 +0300
Subject: [PATCH] Avoid floating-point division in millisToDays

---
 .../org/apache/spark/sql/catalyst/util/DateTimeUtils.scala      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
index b095007a4e65d..7e0df59f9e7ce 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DateTimeUtils.scala
@@ -134,7 +134,7 @@ object DateTimeUtils {
     // SPARK-6785: use Math.floor so negative number of days (dates before 1970)
     // will correctly work as input for function toJavaDate(Int)
     val millisLocal = millisUtc + timeZone.getOffset(millisUtc)
-    Math.floor(millisLocal.toDouble / MILLIS_PER_DAY).toInt
+    Math.floorDiv(millisLocal, MILLIS_PER_DAY).toInt
   }
 
   // reverse of millisToDays