Talk:Kahan summation: Difference between revisions
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PatGarrett (talk | contribs) (Epsilon computation) |
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It is interesting to see that several compilers do not use the different IEEE-754 precisions to implement the different data types. |
It is interesting to see that several compilers do not use the different IEEE-754 precisions to implement the different data types. |
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The trade-off between compiler simplicity a runtime efficiency is: why to bother with different floating point precisions and all the implied cross conversion routines, why not use only the higher precision.<br> |
The trade-off between compiler simplicity a runtime efficiency is: why to bother with different floating point precisions and all the implied cross conversion routines, why not use only the higher precision.<br> |
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===Kahan summation=== |
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Kahan summation algorithm task is a good idea but, the example numbers : 10000.0, 3.14159, 2.71828 |
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are a bad choice, because no rounding errors when IEEE 754 floating point double precision (64 bits) are used by the language, and unfortunatly is now the standard. Let's note that William Kahan is a father of the original IEEE 754 and its revisions.<br> |
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<br> |
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--[[User:PatGarrett|PatGarrett]] ([[User talk:PatGarrett|talk]]) 16:43, 16 February 2019 (UTC) |
--[[User:PatGarrett|PatGarrett]] ([[User talk:PatGarrett|talk]]) 16:43, 16 February 2019 (UTC) |
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