pub unsafe fn _mm512_popcnt_epi64(a: __m512i) -> __m512i
🔬This is a nightly-only experimental API. (stdsimd #48556)
Available on (x86 or x86-64) and target feature avx512vpopcntdq only.
Expand description

For each packed 64-bit integer maps the value to the number of logical 1 bits.

Intel’s documentation