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rcp(F64vec2) missing?

schorscherl
Beginner
270 Views
Hi all,

although the compiler (10.1.012) docs mention it multiple times, the functions

F64vec2 rcp(F64vec2)
F64vec2 rcp_nr(F64vec2)

do not seem to exist - a search in dvec.h confirms this. They are present, however, for F32vec4. Is this a bug or intended?

Thanks for any insight,
Georg.

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1 Reply
TimP
Black Belt
270 Views
As the rcpps instruction is 4-operand parallel, your finding doesn't surprise me. So, it may be a documentation bug, which you could submit on premier.intel.com. However, the documentation of such functions is intentionally incomplete; too many changes occur between compiler versions for them to be recommended for application code. In view of the improved performance of IEEE divide on Penryn and later CPUs, I have been trying to avoid rccps.
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