Function vfmlsl_low_f16

#[target_feature(enable = "neon", enable = "fp16", enable = "fhm")]
pub fn vfmlsl_low_f16(r: float32x2_t, a: float16x4_t, b: float16x4_t) -> float32x2_t

Floating-point fused Multiply-Subtract Long from accumulator (vector). Arm's documentation