Function demo_createPauliStrSumFromFile

examples/isolated/initialising_paulis.cpp:169–194

void demo_createPauliStrSumFromFile() {

    reportStr("[demo_createPauliStrSumFromFile]");

    std::string fn = "test.txt";

    // file contents can be identical to createInlinePauliStrSum input
    if (getQuESTEnv().rank == 0) {
        std::ofstream file;
        file.open(fn);
        file << R"(
            + 5E2-1i     XYZ 
            - 1E-50i     IXY 
            + 1 - 6E-5i  IIX 
            0            III 
            5.           IXX
            .5           ZYX 
        )";
        file.close();
    }
    syncQuESTEnv();

    PauliStrSum a = createPauliStrSumFromFile(fn);
    reportPauliStrSum(a);
    destroyPauliStrSum(a);
}


void demo_createPauliStrSumFromReversedFile() {