Skip to main content

## _mm_mask3_fnmadd_sh

# Function _mm_mask3_fnmadd_sh

1.94.0 (const: unstable) · Source

    pub fn _mm_mask3_fnmadd_sh(
        a: __m128h,
        b: __m128h,
        c: __m128h,
        k: __mmask8,
    ) -> __m128h

Available on x86-64 and target feature `avx512fp16` only.
Expand description

Multiply the lower half-precision (16-bit) floating-point elements in a and b, and subtract the intermediate result from the lower element in c. Store the result in the lower element of dst using writemask k (the element is copied from c when the mask bit 0 is not set), and copy the upper 7 packed elements from c to the upper elements of dst.

Intel’s documentation