Showing tag results for Code

Alignment fixups.

Flush that volume.

Not that sense of the word standard.

More SSE tweaking.

The final parameter to the function is optional. What happens if I pass ? If you pass as the parameter, then the function behaves as if you had passed a pointer to this structure:

All at the top or bottom.

Put it outside the linker's knowledge.

The old switcheroo.

The signum function is defined as follows: There are a couple of ways of calculating this in SSE integers. One way is to convert the C idiom The SSE translation of this is mostly straightforward. The quirk is that the SSE comparison functions return −1 to indicate , whereas C uses +1 to represent . But this is easy to take into accou...

Today I'm going to set, clear, and test a single bit in an SSE register. Why? On Mondays I don't have to explain why. First, we use the trick from last time that lets us generate constants where all set bits are contiguous, and apply it to the case where we want only one bit. We start by setting all bits in . We then shift both 64-bit ...