Is there any performance comparison avaiable?

[hitdshu]

Hi,

Thanks for your excellent project. Is there any performance comparison avaiable? Like fixed vs. float, fixed vs. double, etc..

Deshun

[MinoruSekine]

@hitdshu I'm very sorry for missing this ticket.

Is there any performance comparison avaiable? Like fixed vs. float, fixed vs. double, etc..

No. Those comparison must be there because we can determine which numeric type is suitable.

But I think there are no doubt that...

• On processor like x64 which has hardware floating point SIMD operations and better SIMD usage, float or double will be faster than fixed
  • Of course they have also better accuracy
• On processor which has no FPU, fixed can be faster than emulated float and double

I have to say "Performance comparison should be available" again.

[hitdshu]

Wow, thanks for your reply.....

You're right. Through some search in the web, I found that FPU can make operations of floats as fast as integers. And fixed float might should be used in embbed systems where theres isn't a FPU there....

Thanks for your help. Have a nice day. Deshun