[OpenSmalltalk/opensmalltalk-vm] Bug in primitive 551 (SmallFloat64>> truncated) (#376)

Previous Topic Next Topic
 
classic Classic list List threaded Threaded
4 messages Options
Reply | Threaded
Open this post in threaded view
|

[OpenSmalltalk/opensmalltalk-vm] Bug in primitive 551 (SmallFloat64>> truncated) (#376)

Stephan Eggermont-4
 

There is a bug in an edge case in #truncated primitive in 64 bits Cog Spur (tested on Linux, both in Cuis and Squeak). It is when #truncated a Float that is slightly larger than SmallInteger maxVal.
SmallInteger maxVal --> 1152921504606846975

If we take (1152921504606846975.0 predecessor), to ensure a Float that still fits in a SmallInteger, everything works fine:
1152921504606846975.0 predecessor asTrueFraction --> 1152921504606846848
1152921504606846975.0 predecessor asTrueFraction --> class SmallInteger
1152921504606846975.0 predecessor truncated --> 1152921504606846848

But taking 1152921504606846976.0:
1152921504606846976.0 asTrueFraction --> 1152921504606846976 (correct result)
1152921504606846976.0 asTrueFraction class --> LargePositiveInteger (ok. Doesn't fit in SmallInteger)
1152921504606846976.0 truncated --> -1152921504606846976
The primitive is answering SmallInteger minVal, (a negative number!) but it should fail, as the correct result doesn't fit in a SmallInteger.


You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub, or mute the thread.

<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/OpenSmalltalk/opensmalltalk-vm","title":"OpenSmalltalk/opensmalltalk-vm","subtitle":"GitHub repository","main_image_url":"https://github.githubassets.com/images/email/message_cards/header.png","avatar_image_url":"https://github.githubassets.com/images/email/message_cards/avatar.png","action":{"name":"Open in GitHub","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm"}},"updates":{"snippets":[{"icon":"DESCRIPTION","message":"Bug in primitive 551 (SmallFloat64\u003e\u003e truncated) (#376)"}],"action":{"name":"View Issue","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376"}}}</script> <script type="application/ld+json">[ { "@context": "http://schema.org", "@type": "EmailMessage", "potentialAction": { "@type": "ViewAction", "target": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376", "url": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { "@type": "Organization", "name": "GitHub", "url": "https://github.com" } } ]</script>
Reply | Threaded
Open this post in threaded view
|

Re: [OpenSmalltalk/opensmalltalk-vm] Bug in primitive 551 (SmallFloat64>> truncated) (#376)

Stephan Eggermont-4
 

Closed #376 via 484d768.


You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub, or mute the thread.

<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/OpenSmalltalk/opensmalltalk-vm","title":"OpenSmalltalk/opensmalltalk-vm","subtitle":"GitHub repository","main_image_url":"https://github.githubassets.com/images/email/message_cards/header.png","avatar_image_url":"https://github.githubassets.com/images/email/message_cards/avatar.png","action":{"name":"Open in GitHub","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm"}},"updates":{"snippets":[{"icon":"DESCRIPTION","message":"Closed #376 via 484d7684e6ab79d3a0273751653d08c5cc5b0605."}],"action":{"name":"View Issue","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#event-2198681972"}}}</script> <script type="application/ld+json">[ { "@context": "http://schema.org", "@type": "EmailMessage", "potentialAction": { "@type": "ViewAction", "target": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#event-2198681972", "url": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#event-2198681972", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { "@type": "Organization", "name": "GitHub", "url": "https://github.com" } } ]</script>
Reply | Threaded
Open this post in threaded view
|

Re: [OpenSmalltalk/opensmalltalk-vm] Bug in primitive 551 (SmallFloat64>> truncated) (#376)

Stephan Eggermont-4
In reply to this post by Stephan Eggermont-4
 

Should be fixed by commit 484d768


You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub, or mute the thread.

<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/OpenSmalltalk/opensmalltalk-vm","title":"OpenSmalltalk/opensmalltalk-vm","subtitle":"GitHub repository","main_image_url":"https://github.githubassets.com/images/email/message_cards/header.png","avatar_image_url":"https://github.githubassets.com/images/email/message_cards/avatar.png","action":{"name":"Open in GitHub","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm"}},"updates":{"snippets":[{"icon":"PERSON","message":"@eliotmiranda in #376: Should be fixed by commit 484d7684e6ab79d3a0273751653d08c5cc5b0605"}],"action":{"name":"View Issue","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#issuecomment-472208896"}}}</script> <script type="application/ld+json">[ { "@context": "http://schema.org", "@type": "EmailMessage", "potentialAction": { "@type": "ViewAction", "target": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#issuecomment-472208896", "url": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#issuecomment-472208896", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { "@type": "Organization", "name": "GitHub", "url": "https://github.com" } } ]</script>
Reply | Threaded
Open this post in threaded view
|

Re: [OpenSmalltalk/opensmalltalk-vm] Bug in primitive 551 (SmallFloat64>> truncated) (#376)

Stephan Eggermont-4
In reply to this post by Stephan Eggermont-4
 

Thanks! I've added a test as well.


You are receiving this because you are subscribed to this thread.
Reply to this email directly, view it on GitHub, or mute the thread.

<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/OpenSmalltalk/opensmalltalk-vm","title":"OpenSmalltalk/opensmalltalk-vm","subtitle":"GitHub repository","main_image_url":"https://github.githubassets.com/images/email/message_cards/header.png","avatar_image_url":"https://github.githubassets.com/images/email/message_cards/avatar.png","action":{"name":"Open in GitHub","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm"}},"updates":{"snippets":[{"icon":"PERSON","message":"@fniephaus in #376: Thanks! I've added [a test](http://forum.world.st/The-Trunk-KernelTests-fn-356-mcz-td5096677.html) as well."}],"action":{"name":"View Issue","url":"https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#issuecomment-472250269"}}}</script> <script type="application/ld+json">[ { "@context": "http://schema.org", "@type": "EmailMessage", "potentialAction": { "@type": "ViewAction", "target": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#issuecomment-472250269", "url": "https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/376#issuecomment-472250269", "name": "View Issue" }, "description": "View this Issue on GitHub", "publisher": { "@type": "Organization", "name": "GitHub", "url": "https://github.com" } } ]</script>