Warp wrote:
> Thorsten Froehlich <tho### [at] trfde> wrote:
>> Look in the gcc or icc standard library implementations how they do it. Or 
>> compile and disassemble the compiled code.

<snip>

>   I haven't really looked at what the gcc sincos library call is doing,
> but it might well be that it just executes an fsincos opcode, and that
> the time difference is coming from the overhead of the function call.

You asked what a fast SSE trigonometry implementation would look like, not 
what code your compiler generates when targeting a P4. So clearly you should 
not be looking at the x87 implementation using the fsincos opcode when you 
want to know how the SSE code would look like!?!

	Thorsten

Post a reply to this message