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[bug-66095] support POISSON.DIST function (POISSON already supported) 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1901371 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
PJ Fanning 2022-05-28 19:45:19 +00:00
parent 47a3a5da89
commit a374115817
3 changed files with 97 additions and 6 deletions
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3
poi/src/main/java/org/apache/poi/ss/formula/atp/AnalysisToolPak.java
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@ -166,9 +166,10 @@ public final class AnalysisToolPak implements UDFFinder {
r(m, "ODDFYIELD", null);
r(m, "ODDLPRICE", null);
r(m, "ODDLYIELD", null);
r(m, "PRICE", null);
r(m, "PERCENTRANK.EXC", PercentRankExcFunction.instance);
r(m, "PERCENTRANK.INC", PercentRankIncFunction.instance);
r(m, "POISSON.DIST", Poisson.instance);
r(m, "PRICE", null);
r(m, "PRICEDISC", null);
r(m, "PRICEMAT", null);
r(m, "QUOTIENT", Quotient.instance);

23
poi/src/main/java/org/apache/poi/ss/formula/functions/Poisson.java
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@ -17,25 +17,28 @@
package org.apache.poi.ss.formula.functions;
import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.formula.eval.BoolEval;
import org.apache.poi.ss.formula.eval.ErrorEval;
import org.apache.poi.ss.formula.eval.EvaluationException;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.ValueEval;
public class Poisson {
public class Poisson implements FreeRefFunction {
private static final double DEFAULT_RETURN_RESULT =1;
public static final Poisson instance = new Poisson();
private static final double DEFAULT_RETURN_RESULT = 1;
/** All long-representable factorials */
private static final long[] FACTORIALS = {
1L, 1L, 2L,
1L, 1L, 2L,
6L, 24L, 120L,
720L, 5040L, 40320L,
362880L, 3628800L, 39916800L,
479001600L, 6227020800L, 87178291200L,
1307674368000L, 20922789888000L, 355687428096000L,
6402373705728000L, 121645100408832000L, 2432902008176640000L };
6402373705728000L, 121645100408832000L, 2432902008176640000L };
/**
* This checks is x = 0 and the mean = 0.
@ -77,6 +80,11 @@ public class Poisson {
return FACTORIALS[n];
}
@Override
public ValueEval evaluate(ValueEval[] args, OperationEvaluationContext ec) {
return evaluate(args, ec.getRowIndex(), ec.getColumnIndex());
}
public static ValueEval evaluate(ValueEval[] args, int srcRowIndex, int srcColumnIndex) {
if (args.length != 3) {
return ErrorEval.VALUE_INVALID;
@ -87,7 +95,12 @@ public class Poisson {
try {
// arguments/result for this function
double x = NumericFunction.singleOperandEvaluate(arg0, srcRowIndex, srcColumnIndex);
double x;
try {
x = NumericFunction.singleOperandEvaluate(arg0, srcRowIndex, srcColumnIndex);
} catch (EvaluationException ee) {
return ErrorEval.VALUE_INVALID;
}
double mean = NumericFunction.singleOperandEvaluate(arg1, srcRowIndex, srcColumnIndex);
// check for default result : excel implementation for 0,0

77
poi/src/test/java/org/apache/poi/ss/formula/functions/TestPoissonDist.java Normal file
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@ -0,0 +1,77 @@
/* ====================================================================
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.poi.ss.formula.functions;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.usermodel.FormulaError;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import static org.apache.poi.ss.util.Utils.addRow;
import static org.apache.poi.ss.util.Utils.assertDouble;
import static org.apache.poi.ss.util.Utils.assertError;
/**
* Tests for {@link Poisson}
*/
final class TestPoissonDist {
private static final OperationEvaluationContext ec = new OperationEvaluationContext(null, null, 0, 0, 0, null);
//https://support.microsoft.com/en-us/office/poisson-dist-function-8fe148ff-39a2-46cb-abf3-7772695d9636
@Test
void testMicrosoftExample1() throws IOException {
try (HSSFWorkbook wb = new HSSFWorkbook()) {
HSSFSheet sheet = wb.createSheet();
addRow(sheet, 0, "Data", "Description");
addRow(sheet, 1, 2);
addRow(sheet, 2, 5);
HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
assertDouble(fe, cell, "POISSON.DIST(A2,A3,TRUE)", 0.12465201948308113, 0.00000000000001);
assertDouble(fe, cell, "POISSON.DIST(A2,A3,FALSE)", 0.08422433748856833, 0.00000000000001);
assertDouble(fe, cell, "POISSON(A2,A3,TRUE)", 0.12465201948308113, 0.00000000000001);
assertDouble(fe, cell, "POISSON(A2,A3,FALSE)", 0.08422433748856833, 0.00000000000001);
assertDouble(fe, cell, "POISSON(2.1,5,FALSE)", 0.08422433748856833, 0.00000000000001);
assertDouble(fe, cell, "POISSON(2.9,5,FALSE)", 0.08422433748856833, 0.00000000000001);
}
}
@Test
void testInvalid() throws IOException {
try (HSSFWorkbook wb = new HSSFWorkbook()) {
HSSFSheet sheet = wb.createSheet();
addRow(sheet, 0, "Data", "Description");
addRow(sheet, 1, 2);
addRow(sheet, 2, 5);
HSSFFormulaEvaluator fe = new HSSFFormulaEvaluator(wb);
HSSFCell cell = wb.getSheetAt(0).getRow(0).createCell(100);
assertError(fe, cell, "POISSON.DIST(A2,A3)", FormulaError.VALUE);
assertError(fe, cell, "POISSON.DIST(\"abc\",A3,TRUE)", FormulaError.VALUE);
assertError(fe, cell, "POISSON.DIST(A2,\"A3\",TRUE)", FormulaError.VALUE);
assertError(fe, cell, "POISSON.DIST(-1,A3,TRUE)", FormulaError.NUM);
assertError(fe, cell, "POISSON.DIST(A2,-5,TRUE)", FormulaError.NUM);
}
}
}