_mm_rsqrt_sh in core::arch::x86 - Rust
Description: Compute the approximate reciprocal square root of the lower half-precision (16-bit) floating-point element in b, store the result in the lower element of dst, and copy the upper 7 packed elements from a to the upper elements of dst. The maximum relative error for this approximation is less than `1.5*2^-12`.

## _mm_rsqrt_sh

# Function _mm_rsqrt_sh

1.94.0 · Source

    pub fn _mm_rsqrt_sh(a: __m128h, b: __m128h) -> __m128h

Available on x86 and target feature `avx512fp16` only.
Expand description

Compute the approximate reciprocal square root of the lower half-precision (16-bit) floating-point element in b, store the result in the lower element of dst, and copy the upper 7 packed elements from a to the upper elements of dst. The maximum relative error for this approximation is less than `1.5*2^-12`.

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