# Function core::arch::x86_64::_mm_fmadd_sd

1.27.0 · source · [−]

    pub unsafe fn _mm_fmadd_sd(a: __m128d, b: __m128d, c: __m128d) -> __m128d

Available on (x86 or x86-64) and target feature `fma` and x86-64 only.
Expand description

Multiplies the lower double-precision (64-bit) floating-point elements in `a` and `b`, and add the intermediate result to the lower element in `c`. Stores the result in the lower element of the returned value, and copy the upper element from `a` to the upper elements of the result.

Intel’s documentation