Function core::arch::x86::_mm256_castpd256_pd128

pub unsafe fn _mm256_castpd256_pd128(a: __m256d) -> __m128d

This is supported on (non-crate feature miri-test-libstd or test or doctest) and x86 and target feature avx only.

Casts vector of type __m256d to type __m128d.

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