minabeoki commented on pull request #5662:
URL: https://github.com/apache/incubator-nuttx/pull/5662#issuecomment-1058799505


   @no1wudi 
   Now, I don't have Cortex-A5 device/board.
   It seems certain that Cortex-A5 has vfpv4.
   
https://developer.arm.com/documentation/ddi0450/b/Introduction/About-the-Cortex-A5-NEON-MPE?lang=en
   
   But, the option is vfpv3 in DEN0018A_neon_programmers_guide.pdf.
   I don't know why vfpv3 is specified for A5's compile option.
   
   > Maybe we should follow this spec since it's for cortex a5 special, I'll 
update this PR according to it.
   
   ok, I agree.


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