Function core_arch::x86::_mm256_blendv_pd

pub unsafe fn _mm256_blendv_pd(a: __m256d, b: __m256d, c: __m256d) -> __m256d

This is supported on x86 and target feature avx only.

Blends packed double-precision (64-bit) floating-point elements from a and b using c as a mask.

Intel's documentation