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Posted to commits@nuttx.apache.org by "HERE88 (via GitHub)" <gi...@apache.org> on 2023/07/08 15:32:46 UTC

[GitHub] [nuttx] HERE88 opened a new pull request, #9748: libc/libvsprintf: fix vsnprintf bug with "%e"

HERE88 opened a new pull request, #9748:
URL: https://github.com/apache/nuttx/pull/9748

   For "%e" conversion, the exponent always contains at least two digits. 
   That means if the value is zero, the exponent is 00, not 0.
   
   Such as code:
     printf(buffer, sizeof(buffer), "%e", 1.232323232323);
     printf(buffer, sizeof(buffer), "%e", 12.32323232323);
     printf(buffer, sizeof(buffer), "%e", 123.2323232323);
   
   Expected output:
     1.232323e+00
     1.232323e+01
     1.232323e+02
   
   But real output:
     1.232323e+0
     1.232323e+1
     1.232323e+2
   
   ## Summary
   
   ## Impact
   
   ## Testing
   
   


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[GitHub] [nuttx] HERE88 commented on pull request #9748: libc/libvsprintf: fix vsnprintf bug with "%e"

Posted by "HERE88 (via GitHub)" <gi...@apache.org>.
HERE88 commented on PR #9748:
URL: https://github.com/apache/nuttx/pull/9748#issuecomment-1627601357

   > Check for the uppercase version too, but from my experience: I have seen both formatting happening in various implementations ; the two seems to be accepted.
   
   I have checkerd the uppercase version, they both have the same issue. The only difference is that an E conversion uses the letter E (rather than e) to introduce the exponent.
   


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[GitHub] [nuttx] mu578 commented on pull request #9748: libc/libvsprintf: fix vsnprintf bug with "%e"

Posted by "mu578 (via GitHub)" <gi...@apache.org>.
mu578 commented on PR #9748:
URL: https://github.com/apache/nuttx/pull/9748#issuecomment-1627460217

   Check for the uppercase version too, but from my experience: I have seen both formatting in  various implementations ; the two seems to be accepted.


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[GitHub] [nuttx] xiaoxiang781216 merged pull request #9748: libc/libvsprintf: fix vsnprintf bug with "%e"

Posted by "xiaoxiang781216 (via GitHub)" <gi...@apache.org>.
xiaoxiang781216 merged PR #9748:
URL: https://github.com/apache/nuttx/pull/9748


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