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by vardump 834 days ago
Pretty weird Intel's sine computation latency hasn't changed all that much over the years. Latencies have been pretty similar for 20 years.

EDIT: That's a paper for a software library, not the CPU's internal implementation. Which is probably still done with CORDIC.
1 comments
bigbillheck 834 days ago
> EDIT: That's a paper for a software library, not the CPU's internal implementation.

Unless you're seeing something I'm not, it's talking about x87, which hasn't been anything other than 'internal' since they stopped selling the 80486sx.

link
vardump 834 days ago
Ah you're right.

Anyways I wonder why it's still so slow.

60-120 cycles sure looks like a CORDIC implementation, but perhaps not.

link