[Arm-netbook] Writing efficient C on ARM

Siarhei Siamashka siarhei.siamashka at gmail.com
Mon Dec 16 13:05:19 GMT 2013

On Mon, 16 Dec 2013 12:48:42 +0000
Alain Williams <addw at phcomp.co.uk> wrote:

> I just came across this that might be of interest:
>     http://www.davespace.co.uk/arm/efficient-c-for-arm/

"Floating Point is usually emulated on ARM systems.

        50-300× slower than equivalent integer ops.
        Depending on library, environment."

"Unaligned values have to be pulled from memory a byte at
a time and reformed."

Seriously? Was this guide really written in 2012? Looks like
the guys are at least 4-5 years behind and have not seen any
of the modern (ARMv6 and newer) processors :)

Best regards,
Siarhei Siamashka

More information about the arm-netbook mailing list