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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-18427] Request for log and exponential arithmetic operators in aggregation pipeline</title>
                <link>https://jira.mongodb.org/browse/SERVER-18427</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Specifically, the following would be useful:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;$log10&lt;/li&gt;
	&lt;li&gt;$log&lt;/li&gt;
	&lt;li&gt;$ln&lt;/li&gt;
	&lt;li&gt;$pow&lt;/li&gt;
	&lt;li&gt;$exp&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Original Request:&lt;br/&gt;
If we had logarithm and exponential arithmetic operators in the aggregation framework, I could move the last of my formulas out of mapReduce and into aggregation, with all the Good Things that would mean.&lt;/p&gt;</description>
                <environment></environment>
        <key id="203523">SERVER-18427</key>
            <summary>Request for log and exponential arithmetic operators in aggregation pipeline</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="james.cohan">James Cohan</assignee>
                                    <reporter username="bill.chute@acadiant.com">Bill Chute</reporter>
                        <labels>
                    </labels>
                <created>Tue, 12 May 2015 08:36:10 +0000</created>
                <updated>Wed, 28 Oct 2015 04:37:22 +0000</updated>
                            <resolved>Fri, 7 Aug 2015 14:46:58 +0000</resolved>
                                                    <fixVersion>3.1.7</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="999375" author="xgen-internal-githook" created="Fri, 7 Aug 2015 14:35:23 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jamesfcohan&apos;, u&apos;name&apos;: u&apos;James Cohan&apos;, u&apos;email&apos;: u&apos;james.cohan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18427&quot; title=&quot;Request for log and exponential arithmetic operators in aggregation pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18427&quot;&gt;&lt;del&gt;SERVER-18427&lt;/del&gt;&lt;/a&gt; Adds $log, $log10, $ln, $pow, and $exp aggregation expressions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a8176cf1da9fdbcc48334bfb3c71fedf37e77879&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a8176cf1da9fdbcc48334bfb3c71fedf37e77879&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="996268" author="xgen-internal-githook" created="Tue, 4 Aug 2015 17:30:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jamesfcohan&apos;, u&apos;name&apos;: u&apos;James Cohan&apos;, u&apos;email&apos;: u&apos;james.cohan@10gen.com&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18427&quot; title=&quot;Request for log and exponential arithmetic operators in aggregation pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18427&quot;&gt;&lt;del&gt;SERVER-18427&lt;/del&gt;&lt;/a&gt; Adds $log, $log10, $ln, $pow, and $exp aggregation expressions&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit f0541cc1f7f9cf1987aaf392dcb2328f71d6d232.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6ba08bc5bdcd4f41899a0fc7c8a60cbc3aed1102&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6ba08bc5bdcd4f41899a0fc7c8a60cbc3aed1102&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="994283" author="xgen-internal-githook" created="Fri, 31 Jul 2015 20:57:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jamesfcohan&apos;, u&apos;name&apos;: u&apos;James Cohan&apos;, u&apos;email&apos;: u&apos;james.cohan@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-18427&quot; title=&quot;Request for log and exponential arithmetic operators in aggregation pipeline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-18427&quot;&gt;&lt;del&gt;SERVER-18427&lt;/del&gt;&lt;/a&gt; Adds $log, $log10, $ln, $pow, and $exp aggregation expressions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f0541cc1f7f9cf1987aaf392dcb2328f71d6d232&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f0541cc1f7f9cf1987aaf392dcb2328f71d6d232&lt;/a&gt;&lt;/p&gt;</comment>
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                            <issuelinktype id="10012">
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                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="225162">CSHARP-1369</issuekey>
        </issuelink>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="54262">SERVER-7463</issuekey>
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            <issuelink>
            <issuekey id="209231">DRIVERS-234</issuekey>
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