Function core::arch::arm::__ssub8

pub unsafe fn __ssub8(a: int8x4_t, b: int8x4_t) -> int8x4_t

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

This is supported on ARM only.

插入 SSUB8 指令。

返回与之等效的 8 位有符号

res[0] = a[0] - a[0] res[1] = a[1] - a[1] res[2] = a[2] - a[2] res[3] = a[3] - a[3]

其中 [0] 是低 8 位，[3] 是高 8 位。 APSR 的 GE 位置 1。