Function core::arch::x86::_mm512_reduce_add_pd

pub unsafe fn _mm512_reduce_add_pd(a: __m512d) -> f64

🔬This is a nightly-only experimental API. (stdsimd #48556)

Available on (x86 or x86-64) and target feature avx512f and x86 only.

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另外，还减少了包装的双精度 (64-bit) 浮点元素。返回所有元素的总和 a.