vec_sub_u128

Purpose

Subtracts unsigned quadword values.

The function operates on vectors as 128-bit unsigned integers.

Note: This built-in function is valid when the -mcpu option is set to target POWER8 processors, or higher.

Syntax

d=vec_sub_u128(a, b)

Result and argument types

The type of d, a, and b must be vector unsigned char.

Result value

Returns low 128 bits of a - b.