Search all intrinsics
SIMD ISAReturn TypeNameArgumentsInstruction Group
Neonuint32x2_tvqsub_u32(uint32x2_t a, uint32x2_t b)Vector arithmetic / Subtract / Saturating subtract
Description
Unsigned saturating Subtract. This instruction subtracts the element values of the second source SIMD&FP register from the corresponding element values of the first source SIMD&FP register, places the results into a vector, and writes the vector to the destination SIMD&FP register.
Results
Vd.2S result
This intrinsic compiles to the following instructions:

UQSUB Vd.2S,Vn.2S,Vm.2S

Argument Preparation
a register: Vn.2Sb register: Vm.2S
Architectures
v7, A32, A64

Operation

CheckFPAdvSIMDEnabled64();
bits(datasize) operand1 = V[n];
bits(datasize) operand2 = V[m];
bits(datasize) result;
integer element1;
integer element2;
integer diff;
boolean sat;

for e = 0 to elements-1
    element1 = Int(Elem[operand1, e, esize], unsigned);
    element2 = Int(Elem[operand2, e, esize], unsigned);
    diff = element1 - element2;
    (Elem[result, e, esize], sat) = SatQ(diff, esize, unsigned);
    if sat then FPSR.QC = '1';

V[d] = result;