Architectures and Processors forum 64-bit divider using Cortex-M3

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64-bit divider using Cortex-M3

Mani77 over 3 years ago

Hi ,

I'm trying to do a 64-bit divide operation in C using Cortex-M3.

Is there a reference of optimized assembly code for same or recommended approach?

Thanks

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Andy Neil over 3 years ago +1 verified

Mani77 said: in C so just use (u)int64_t ?
Andy Neil over 3 years ago in reply to Mani77 +1 verified

as it's directly implemented by the compiler, I think you can safely assume that it will be well optimised ... ?
42Bastian Schick over 3 years ago in reply to Mani77 +1

The compiler's divide is optimized for the general use case. If you need a special divide, you are free to write your own.

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0 Mani77 over 3 years ago in reply to Andy Neil

Sure. I just was wondering if there any variations or some switches to tweak it in terms of performance.

Thanks for the help.
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0 Mani77 over 3 years ago in reply to Andy Neil

Sure. I just was wondering if there any variations or some switches to tweak it in terms of performance.

Thanks for the help.
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0 42Bastian Schick over 3 years ago in reply to Mani77

The compiler's divide is optimized for the general use case. If you need a special divide, you are free to write your own.
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