Number of Bits Needed to Represent a Zero-Offset Integer

via Digitalmars-d-learn digitalmars-d-learn at puremagic.com
Mon Jan 19 07:49:29 PST 2015


On Monday, 19 January 2015 at 13:30:47 UTC, Steven Schveighoffer 
wrote:
> http://dlang.org/phobos/core_bitop.html#.bsr
>
> It's actually an intrinsic, reduces to an instruction. Mind the 
> requirements for 0.
>
> -Steve

Nice. Is this intrinsic supported for all DMD/GCD/LDC supported 
platforms or do we have to supply fallback logic when bsr is not 
available?


More information about the Digitalmars-d-learn mailing list