core::arch::s390x

Function vec_subec_u128

Source 
pub unsafe fn vec_subec_u128(
    a: vector_unsigned_char,
    b: vector_unsigned_char,
    c: vector_unsigned_char,
) -> vector_unsigned_char
🔬This is a nightly-only experimental API. (stdarch_s390x #135681)
Available on s390x and target feature vector only.
Expand description

Vector Subtract with Carryout, Carryout

Gets the carry bit of the 128-bit subtraction of two quadword values with carry bit from the previous operation.

It returns a vector containing the carryout produced from the result of subtracting of b from a, and the carryout bit from a previous operation. If no borrow occurred, the 127-bit of d is 1, otherwise 0. All other bits of d are 0.

Note: Only the borrow indication bit (127-bit) of c is used, and the other bits are ignored.