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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>
    </build-info>


<item>
            <title>[CDRIVER-2612] bson_as_json prints insignificant digits for doubles</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-2612</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;Unfortunately a new number formatting similar to issue: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-652&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;https://jira.mongodb.org/browse/CDRIVER-652&lt;/a&gt;. The bson_as_json function prints many insignificant digits for doubles:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&amp;gt; con &amp;lt;- mongo()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&amp;gt; con$insert(&apos;{&quot;test&quot;: 3.9}&apos;)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&amp;gt; con$export()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{ &quot;_id&quot; : { &quot;$oid&quot; : &quot;5ad088a5ba7cb20ff97e6a54&quot; }, &quot;test&quot; : 3.8999999999999999112 }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;OTOH, the mongo command line utility prints the correct number of digits for the same data:&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;&amp;gt; db.test.find()&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{ &quot;_id&quot; : ObjectId(&quot;5ad088a5ba7cb20ff97e6a54&quot;), &quot;test&quot; : 3.9 }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="526463">CDRIVER-2612</key>
            <summary>bson_as_json prints insignificant digits for doubles</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="Jeroenooms">Jeroen Ooms [X]</reporter>
                        <labels>
                    </labels>
                <created>Fri, 13 Apr 2018 10:42:03 +0000</created>
                <updated>Thu, 26 Apr 2018 02:00:51 +0000</updated>
                            <resolved>Thu, 26 Apr 2018 02:00:51 +0000</resolved>
                                                    <fixVersion>1.10.0</fixVersion>
                                    <component>libbson</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1863715" author="jesse" created="Fri, 13 Apr 2018 15:42:16 +0000"  >&lt;p&gt;Go for it!&lt;/p&gt;</comment>
                            <comment id="1863681" author="jeroenooms" created="Fri, 13 Apr 2018 15:29:53 +0000"  >&lt;p&gt;OK. Do you mind if I fix it in my copy of the vendored libmongoc code? The incorrect digits at the end are a bit unfortunate for us.&lt;/p&gt;</comment>
                            <comment id="1863670" author="jesse" created="Fri, 13 Apr 2018 15:27:19 +0000"  >&lt;p&gt;Sorry, Jeroen, I&apos;m not going to change this again.&lt;/p&gt;</comment>
                            <comment id="1863581" author="jeroenooms" created="Fri, 13 Apr 2018 14:45:22 +0000"  >&lt;p&gt;It&apos;s not a blocker but it&apos;s not optimal. The example above shows that you are printing noise at the end, which is incorrect and makes the json payload larger than needed. Perhaps we can make the &quot;%.20g&quot; format a macro so that I can set it back to %.15g for my client? The command line util seems to do the correct thing though.&lt;/p&gt;
</comment>
                            <comment id="1863510" author="jesse" created="Fri, 13 Apr 2018 13:44:39 +0000"  >&lt;p&gt;Thanks Jeroen. The C Driver formats doubles with &quot;%.20g&quot;, which was updated from &quot;%.15g&quot; some time after &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-652&quot; title=&quot;Number formatting and whitespace in bson_as_json&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-652&quot;&gt;&lt;del&gt;CDRIVER-652&lt;/del&gt;&lt;/a&gt;. If I remember correctly, that was &quot;%g&quot; at some point but that caused a different problem. Can you tell me why this is important? I&apos;d like to stop changing the formatting for doubles if it&apos;s basically correct. If it&apos;s truly incorrect, could you find out what we could do to act identically to mongoexport?&lt;/p&gt;</comment>
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