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MiszaBot I (talk | contribs) m Robot: Archiving 1 thread from Talk:Floating point. |
MiszaBot I (talk | contribs) m Robot: Archiving 1 thread from Talk:Floating point. |
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: If have added an example from Kahan's publications-- I think this is a good example as it demonstrates the massive roundoff error (up to half signif. digits lost) that can occur with even innocuous-looking formulae, and shows the two main methods to correct or improve that: increased internal precision, or numerical analysis. [[User:Brianbjparker|Brianbjparker]] ([[User talk:Brianbjparker|talk]]) 07:03, 28 February 2012 (UTC)
::Yes it is definitely better to source something like that to a good source like him. I may not agree with every last word he says about it but he definitely is the premiere source for anything on floating point. [[User:Dmcq|Dmcq]] ([[User talk:Dmcq|talk]]) 14:14, 28 February 2012 (UTC)
== 01010111 01101000 01100001 01110100 00101110 00101110 00101110 00111111 (What...?) ==
The section on internal representation does not explain how decimals are converted to floating-point values. I think it will be helpful if we add a step-by-step procedure that the computer follows. Thanks! [[Special:Contributions/68.173.113.106|68.173.113.106]] ([[User talk:68.173.113.106|talk]]) 02:16, 25 February 2012 (UTC)
:This gives an example of conversion and the articles on the particular formats give other examples. Wikipedia does not in general provide step by step procedures, it describes things, see [[WP:NOTHOWTO]]. [[User:Dmcq|Dmcq]] ([[User talk:Dmcq|talk]]) 02:24, 25 February 2012 (UTC)
::I just thought it was kind of unclear. Besides, doing so might actually help this article get to GA status.
::You see, I'm trying to design an algorithm for getting the mantissa, the exponent, and the sign of a <code>float</code> or <code>double</code>. So in case anyone else actually cares about that stuff. For the record, the storage is little-endian, so you have to reverse the bit order. [[Special:Contributions/68.173.113.106|68.173.113.106]] ([[User talk:68.173.113.106|talk]]) 02:50, 25 February 2012 (UTC)
:::It would stop FA status. Have a look at the articles about the individual formats. They describe in quite enough details the format. Any particular algorithm is up to the user, they are not interesting or discussed in secondary sources. [[User:Dmcq|Dmcq]] ([[User talk:Dmcq|talk]]) 10:01, 25 February 2012 (UTC)
:::The closest in Wikipedia for the sort of stuff you're talking about is if somebody wrote something for wikibooks. Have you had a look at the various external sites? Really to me what you're talking about sounds like some homework exercise and we shouldn't help with those except perhaps to give hints. [[User:Dmcq|Dmcq]] ([[User talk:Dmcq|talk]]) 10:20, 25 February 2012 (UTC)
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