_mm256_castph128_ph256 in core::arch::x86 - Rust
Description: Cast vector of type `__m128h` to type `__m256h`. The upper 8 elements of the result are undefined. In practice, the upper elements are zeroed. This intrinsic can generate the `vzeroupper` instruction, but most of the time it does not generate any instructions.

## _mm256_castph128_ph256

# Function _mm256_castph128_ph256

Source

    pub fn _mm256_castph128_ph256(a: __m128h) -> __m256h

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

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

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