/**
* 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.ql.udf;
import org.apache.hadoop.hive.common.type.HiveDecimal;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.hive.serde2.io.HiveDecimalWritable;
import org.junit.Assert;
import org.junit.Test;
public class TestUDFMath {
private HiveDecimalWritable input = null;
@Test
public void testAcos() throws HiveException {
UDFAcos udf = new UDFAcos();
input = createDecimal("0.716");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(0.7727408115633954, res.get(), 0.000001);
}
@Test
public void testAsin() throws HiveException {
UDFAsin udf = new UDFAsin();
input = createDecimal("0.716");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(0.7980555152315012, res.get(), 0.000001);
}
@Test
public void testAtan() throws HiveException {
UDFAtan udf = new UDFAtan();
input = createDecimal("1.0");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(0.7853981633974483, res.get(), 0.000001);
}
@Test
public void testCos() throws HiveException {
UDFCos udf = new UDFCos();
input = createDecimal("0.7727408115633954");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(0.716, res.get(), 0.000001);
}
@Test
public void testSin() throws HiveException {
UDFSin udf = new UDFSin();
input = createDecimal("0.7980555152315012");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(0.716, res.get(), 0.000001);
}
@Test
public void testTan() throws HiveException {
UDFTan udf = new UDFTan();
input = createDecimal("0.7853981633974483");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(1.0, res.get(), 0.000001);
}
@Test
public void testExp() throws HiveException {
UDFExp udf = new UDFExp();
input = createDecimal("2.0");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(7.38905609893065, res.get(), 0.000001);
}
@Test
public void testLn() throws HiveException {
UDFLn udf = new UDFLn();
input = createDecimal("7.38905609893065");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(2.0, res.get(), 0.000001);
}
@Test
public void testLog() throws HiveException {
UDFLog udf = new UDFLog();
input = createDecimal("7.38905609893065");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(2.0, res.get(), 0.000001);
DoubleWritable input = new DoubleWritable(9.0);
res = udf.evaluate(createDecimal("3.0"), input);
Assert.assertEquals(2.0, res.get(), 0.000001);
DoubleWritable base = new DoubleWritable(3.0);
res = udf.evaluate(base, createDecimal("9.0"));
Assert.assertEquals(2.0, res.get(), 0.000001);
res = udf.evaluate(createDecimal("3.0"), createDecimal("9.0"));
Assert.assertEquals(2.0, res.get(), 0.000001);
}
@Test
public void testLog10() throws HiveException {
UDFLog10 udf = new UDFLog10();
input = createDecimal("100.0");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(2.0, res.get(), 0.000001);
}
@Test
public void testLog2() throws HiveException {
UDFLog2 udf = new UDFLog2();
input = createDecimal("8.0");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(3.0, res.get(), 0.000001);
}
@Test
public void testRadians() throws HiveException {
UDFRadians udf = new UDFRadians();
input = createDecimal("45.0");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(0.7853981633974483, res.get(), 0.000001);
}
@Test
public void testDegrees() throws HiveException {
UDFDegrees udf = new UDFDegrees();
input = createDecimal("0.7853981633974483");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(45.0, res.get(), 0.000001);
}
@Test
public void testSqrt() throws HiveException {
UDFSqrt udf = new UDFSqrt();
input = createDecimal("49.0");
DoubleWritable res = udf.evaluate(input);
Assert.assertEquals(7.0, res.get(), 0.000001);
}
private HiveDecimalWritable createDecimal(String input) {
return new HiveDecimalWritable(HiveDecimal.create(input));
}
}