jason7708

What pext does is different from what the pext instruction does

1

When I tried certain inputs and did not enable -mbmi2, my mask was calculated as `163839`. The compilation crashed because the nbits calculation produced an extremely large number. And I...

What pseudo_pext_t does is different from what the pext instruction does

2

I'm not sure if this is a bug or an intentional design. You can reproduce it through the following unit test. ```c++ constexpr auto p = lookup::detail::pseudo_pext_t(21u); CHECK(p(21u) == 7u);...