On Sam, 2012-08-11 at 10:30 -0700, Steven Fuerst wrote:
> We use __fls() to find the most significant bit. Using that, the
> loop can be avoided. A second trick is to use the behaviour of the
> rotate instructions to expand the range of the unsigned int to float
> conversion to the full 32 bits
On Sam, 2012-08-11 at 10:30 -0700, Steven Fuerst wrote:
> We use __fls() to find the most significant bit. Using that, the
> loop can be avoided. A second trick is to use the behaviour of the
> rotate instructions to expand the range of the unsigned int to float
> conversion to the full 32 bits
We use __fls() to find the most significant bit. Using that, the
loop can be avoided. A second trick is to use the behaviour of the
rotate instructions to expand the range of the unsigned int to float
conversion to the full 32 bits in a branchless way.
The routine is now exact up to 2^24. Above
We use __fls() to find the most significant bit. Using that, the
loop can be avoided. A second trick is to use the behaviour of the
rotate instructions to expand the range of the unsigned int to float
conversion to the full 32 bits in a branchless way.
The routine is now exact up to 2^24. Above
