Function accel_densmatr_partialTrace_sub

quest/src/core/accelerator.cpp:848–857

void accel_densmatr_partialTrace_sub(Qureg inQureg, Qureg outQureg, vector<int> targs, vector<int> pairTargs) {
    assert_partialTraceQuregsAreIdenticallyDeployed(inQureg, outQureg);

    auto cpuFunc = GET_FUNC_OPTIMISED_FOR_NUM_TARGS( cpu_densmatr_partialTrace_sub, targs.size() );
    auto gpuFunc = GET_FUNC_OPTIMISED_FOR_NUM_TARGS( gpu_densmatr_partialTrace_sub, targs.size() );

    // inQureg == outQureg except for dimension, so use common backend
    auto useFunc = (inQureg.isGpuAccelerated)? gpuFunc : cpuFunc;
    useFunc(inQureg, outQureg, targs, pairTargs);
}