pub unsafe fn _mm512_mask_reduce_add_ps(k: __mmask16, a: __m512) -> f32
🔬This is a nightly-only experimental API. (stdsimd #48556)
Available on (x86 or x86-64) and target feature avx512f and x86-64 only.
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通过使用掩码 k 加法来减少包装的单精度 (32-bit) 浮点元素。返回所有活动元素的总和 a.

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