🔬This is a nightly-only experimental API. (
Available on (x86 or x86-64) and target feature
avx512f,avx512vl and x86-64 only.
Unpack and interleave double-precision (64-bit) floating-point elements from the low half of each 128-bit lane in a and b, and store the results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).