/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.common.type;
import static org.junit.Assert.*;
import org.junit.Test;
/**
* This code was based on code from Microsoft's PolyBase.
*/
public class TestSqlMathUtil {
@Test
public void testDivision() {
{
int[] dividend = new int[] { 1 + 33, 2 + 21, 3, 4 + 10, 20, 30, 40, 0 };
int[] divisor = new int[] { 1, 2, 3, 4 };
int[] quotient = new int[5];
int[] remainder = SqlMathUtil.divideMultiPrecision(dividend, divisor,
quotient);
assertArrayEquals(new int[] { 1, 0, 0, 10, 0 }, quotient);
assertArrayEquals(new int[] { 33, 21, 0, 0, 0, 0, 0, 0, 0 }, remainder);
}
{
int[] dividend = new int[] { 0xF7000000, 0, 0x39000000, 0 };
int[] divisor = new int[] { 0xF700, 0, 0x3900, 0 };
int[] quotient = new int[5];
int[] remainder = SqlMathUtil.divideMultiPrecision(dividend, divisor,
quotient);
assertArrayEquals(new int[] { 0x10000, 0, 0, 0, 0 }, quotient);
assertArrayEquals(new int[] { 0, 0, 0, 0, 0 }, remainder);
}
{
// Zero dividend
int[] dividend = new int[] { 0, 0, 0, 0 };
int[] divisor = new int[] { 0xF700, 0, 0x3900, 0 };
int[] quotient = new int[5];
int[] remainder = SqlMathUtil.divideMultiPrecision(dividend, divisor,
quotient);
assertArrayEquals(new int[] { 0, 0, 0, 0, 0 }, quotient);
assertArrayEquals(new int[] { 0, 0, 0, 0, 0 }, remainder);
}
}
}