Function core::arch::arm::dsp::__smulbt

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

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

This is supported on ARM only.

插入 SMULTB 指令

返回 a[1] * b[0] 的等效项，其中 [0] 是低 16 位，而 [1] 是高 16 位。