# Function _mm256_zextph128_ph256

Source

    pub fn _mm256_zextph128_ph256(a: __m128h) -> __m256h

🔬This is a nightly-only experimental API. (`stdarch_x86_avx512_f16` #127213)
Available on (x86 or x86-64) and target feature `avx512fp16` and x86 only.
Expand description

Cast vector of type `__m256h` to type `__m128h`. The upper 8 elements of the result are zeroed. This intrinsic can generate the `vzeroupper` instruction, but most of the time it does not generate any instructions.

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