Function printVector

quest/src/core/printer.cpp:1201–1236

// T can be any 1D type, e.g. Qureg (.isDensityMatrix=0), FullStateDiagMatr, DiagMatr/1/2
template <class T>
void printVector(T obj, string indent) {

    // divide vector into one of two column vectors (ul and ll; ur and lr stay empty)
    qcompmatr ul,ur,ll,lr;
    qindex numAmps = powerOf2(obj.numQubits);
    MatrixQuadrantInds inds = getTruncatedMatrixQuadrantInds(numAmps, 1);
    allocateMatrixQuadrants(inds, ul,ur,ll,lr);
    populateMatrixQuadrants(inds, ul,ur,ll,lr, obj);

    // rows are only labelled if we're printing a Qureg...
    vector<string> upperRowLabels = {};
    vector<string> lowerRowLabels = {};
    if constexpr (util_isQuregType<T>()) {
        upperRowLabels = getBasisKets(inds.upperStartRow, inds.numUpperLeftRows);
        lowerRowLabels = getBasisKets(inds.lowerStartRow, inds.numLowerLeftRows);
    }

    // and/or if the type is distributed
    if constexpr (util_isDistributableType<T>())
        if (obj.isDistributed)
            populateDistributedVectorRowLabels(upperRowLabels, lowerRowLabels, obj, inds);

    // columns are never labelled
    vector<string> colLabels = {};

    // only successively indent each row when vector represets a diagonal matrix
    bool indentEachRow = ! util_isQuregType<T>(); // since else diagonal
    string indentPerRow = (indentEachRow)? string(SET_SPACE_BETWEEN_DIAG_MATRIX_COLS, MATRIX_SPACE_CHAR) : ""; 
    string ellipsisChar = (indentEachRow)? DDOTS_CHAR : VDOTS_CHAR;

    // will print the vector in one or two quadrants (right two quadrants are unpopulated)
    printMatrixInFourQuadrants(
        ul, ur, ll, lr,
        colLabels, colLabels, upperRowLabels, lowerRowLabels, 
        indent, indentPerRow, ellipsisChar);
}


void print_elems(DiagMatr1 obj, string indent) { printVector(obj, indent); }