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"body": "<div id=\"comment:0\"></div>\n\n\n```\nsage: arccsch(float(0.1))\n(2.99822295029797+0j)\n\nshould be\n\n2.99822295029797\n```\n\n8-year old bug, triggered by recent Pynac changes\n\nComponent: **symbolics**\n\nAuthor: **Ralf Stephan**\n\nBranch: **[`4df530d`](https://github.com/sagemath/sagetrac-mirror/commit/4df530d269afa3cc20ce27bb12cd896c0e85f02a)**\n\nReviewer: **Fr\u00e9d\u00e9ric Chapoton**\n\n_Issue created by migration from https://trac.sagemath.org/ticket/20818_\n\n",
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"title": "acsch(float) returns complex",
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(2.99822295029797+0j)
should be
2.99822295029797
8-year old bug, triggered by recent Pynac changes
Component: symbolics
Author: Ralf Stephan
Branch: 4df530d
Reviewer: Frédéric Chapoton
Issue created by migration from https://trac.sagemath.org/ticket/20818
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"body": "Description changed:\n``````diff\n--- \n+++ \n@@ -8,3 +8,4 @@\n 2.99822295029797\n ```\n \n+8-year old bug, triggered by recent Pynac changes\n``````\n",
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---
+++
@@ -8,3 +8,4 @@
2.99822295029797
```
+8-year old bug, triggered by recent Pynac changesarchive/issue_comments_301949.json:
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ok, looks good to me
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Ralf, I'm curious as to how you recognized the bug. Is there a previous Trac ticket?
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"body": "<div id=\"comment:6\" align=\"right\">comment:6</div>\n\nReplying to [@paulmasson](#comment%3A4):\n> Ralf, I'm curious as to how you recognized the bug. Is there a previous Trac ticket?\n\nAfter Volker gave me a function argument that showed the problem I traced what Pynac was doing. It called the fixed function and then it was obvious. How I know that this is 8 year old? You can use git blame to see when a specific line was changed.",
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Replying to @paulmasson:
Ralf, I'm curious as to how you recognized the bug. Is there a previous Trac ticket?
After Volker gave me a function argument that showed the problem I traced what Pynac was doing. It called the fixed function and then it was obvious. How I know that this is 8 year old? You can use git blame to see when a specific line was changed.
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