Function core::arch::arm::__smusd[][src]

pub unsafe fn __smusd(a: int16x2_t, b: int16x2_t) -> i32
🔬 This is a nightly-only experimental API. (stdsimd #48556)
This is supported on ARM only.
Expand description

有符号的双数乘法减法。

返回等价于

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

并在加法发生溢出时设置 Q 标志。