What Is poi-5.2.3.jar?

poi-5.2.3.jar is one of the JAR files for Apache POI 5.2.3, which provides an API for Microsoft document files of Word, Excel, PowerPoint, and Visio.

poi-5.2.3.jar supports Apache POI components that read and write Microsoft's OLE 2 Compound document format, which is used in early versions of Microsoft Office tools like Word 97, Excel 97, PowerPoint 97, etc.

poi-5.2.3.jar is distributed as part of the poi-bin-5.2.3-20220909.zip download file.

JAR File Size and Download Location:

JAR name: poi-5.2.3.jar
Target JDK version: 9

File name: poi.jar, poi-5.2.3.jar
File size: 2964641 bytes
Release date: 09-09-2022
Download: Apache POI Website

Here are Java Source Code files for poi-5.2.3.jar:

⏎ org/apache/poi/ss/util/ExpandedDouble.java

/* ====================================================================
   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.util;

import java.math.BigInteger;
import static org.apache.poi.ss.util.IEEEDouble.*;

/**
 * Represents a 64 bit IEEE double quantity expressed with both decimal and binary exponents
 * Does not handle negative numbers or zero
 * <p>
 * The value of a {@link ExpandedDouble} is given by<br>
 * <tt> a &times; 2<sup>b</sup></tt>
 * <br>
 * where:<br>
 *
 * {@code a} = <i>significand</i><br>
 * {@code b} = <i>binaryExponent</i> - bitLength(significand) + 1<br>
 */
final class ExpandedDouble {
    private static final BigInteger BI_FRAC_MASK = BigInteger.valueOf(FRAC_MASK);
    private static final BigInteger BI_IMPLIED_FRAC_MSB = BigInteger.valueOf(FRAC_ASSUMED_HIGH_BIT);

    private static BigInteger getFrac(long rawBits) {
        return BigInteger.valueOf(rawBits).and(BI_FRAC_MASK).or(BI_IMPLIED_FRAC_MSB).shiftLeft(11);
    }


    public static ExpandedDouble fromRawBitsAndExponent(long rawBits, int exp) {
        return new ExpandedDouble(getFrac(rawBits), exp);
    }

    /**
     * Always 64 bits long (MSB, bit-63 is '1')
     */
    private final BigInteger _significand;
    private final int _binaryExponent;

    public ExpandedDouble(long rawBits) {
        int biasedExp = Math.toIntExact(rawBits >> 52);
        if (biasedExp == 0) {
            // sub-normal numbers
            BigInteger frac = BigInteger.valueOf(rawBits).and(BI_FRAC_MASK);
            int expAdj = 64 - frac.bitLength();
            _significand = frac.shiftLeft(expAdj);
            _binaryExponent = -1023 - expAdj;
        } else {
            _significand = getFrac(rawBits);
            _binaryExponent = (biasedExp & 0x07FF) - 1023;
        }
    }

    ExpandedDouble(BigInteger frac, int binaryExp) {
        if (frac.bitLength() != 64) {
            throw new IllegalArgumentException("bad bit length");
        }
        _significand = frac;
        _binaryExponent = binaryExp;
    }


    /**
     * Convert to an equivalent {@link NormalisedDecimal} representation having 15 decimal digits of precision in the
     * non-fractional bits of the significand.
     */
    public NormalisedDecimal normaliseBaseTen() {
        return NormalisedDecimal.create(_significand, _binaryExponent);
    }

    /**
     * @return the number of non-fractional bits after the MSB of the significand
     */
    public int getBinaryExponent() {
        return _binaryExponent;
    }

    public BigInteger getSignificand() {
        return _significand;
    }
}

⏎ org/apache/poi/ss/util/ExpandedDouble.java

Or download all of them as a single archive file:

File name: poi-5.2.3-src.zip
File size: 2479830 bytes
Release date: 2022-09-09
Download 

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