Function vfmsd_laneq_f64

pub unsafe fn vfmsd_laneq_f64(
    a: f64,
    b: f64,
    c: float64x2_t,
    const LANE: i32,
) -> f64

Available on (AArch64 or target_arch="arm64ec") and target feature neon only.

Floating-point fused multiply-subtract to accumulator

Arm’s documentation