Function core::arch::arm::__smuadx

pub unsafe fn __smuadx(a: int16x2_t, b: int16x2_t) -> i32

🔬 This is a nightly-only experimental API. (stdsimd #48556)

This is supported on ARM only.

有符号的双数乘法加法反转。

返回等价于

res = a[0] * b[1] + a[1] * b[0]

并在加法发生溢出时设置 Q 标志。