Search all intrinsics
SIMD ISAReturn TypeNameArgumentsInstruction Group
Neonuint16x4_tvabd_u16(uint16x4_t a, uint16x4_t b)Vector arithmetic / Absolute / Absolute difference
Description
Unsigned Absolute Difference (vector). This instruction subtracts the elements of the vector of the second source SIMD&FP register from the corresponding elements of the first source SIMD&FP register, places the the absolute values of the results into a vector, and writes the vector to the destination SIMD&FP register.
Results
Vd.4H result
This intrinsic compiles to the following instructions:

UABD Vd.4H,Vn.4H,Vm.4H

Argument Preparation
a register: Vn.4Hb register: Vm.4H
Architectures
v7, A32, A64

Operation

CheckFPAdvSIMDEnabled64();
bits(datasize) operand1 = V[n];
bits(datasize) operand2 = V[m];
bits(datasize) result;
integer element1;
integer element2;
bits(esize) absdiff;

result = if accumulate then V[d] else Zeros();
for e = 0 to elements-1
    element1 = Int(Elem[operand1, e, esize], unsigned);
    element2 = Int(Elem[operand2, e, esize], unsigned);
    absdiff = Abs(element1 - element2)<esize-1:0>;
    Elem[result, e, esize] = Elem[result, e, esize] + absdiff;
V[d] = result;