Function validate_quregCanBeSetToReducedDensMatr

quest/src/core/validation.cpp:4315–4329

}

void validate_quregCanBeSetToReducedDensMatr(Qureg out, Qureg in, int numTraceQubits, const char* caller) {

    int numRemainingQubits = in.numQubits - numTraceQubits;

    tokenSubs vars = {
        {"${IN_QUBITS}",  in.numQubits},
        {"${OUT_QUBITS}", out.numQubits},
        {"${TRACE_QUBITS}",  numTraceQubits},
        {"${RETAIN_QUBITS}", numRemainingQubits}};

    assertThat(out.numQubits == numRemainingQubits, report::NUM_TRACE_QUBITS_INCONSISTENT_WITH_REDUCED_QUREG, vars, caller);

    assertThat(out.isDistributed    == in.isDistributed,    report::REDUCED_QUREG_DIFFERING_DISTRIBUTION_TO_IN_QUREG,   caller);
    assertThat(out.isGpuAccelerated == in.isGpuAccelerated, report::REDUCED_QUREG_DIFFERING_GPU_DEPLOYMENT_TO_IN_QUREG, caller);
}