Function demo_setCompMatr

examples/isolated/initialising_matrices.cpp:149–195

void demo_setCompMatr() {

    // inline literal (C++ only)
    CompMatr a = createCompMatr(1);
    setCompMatr(a, {{1,2_i},{3_i+.1,-4}});
    reportCompMatr(a);
    destroyCompMatr(a);

    // 2D vector (C++ only)
    vector<vector<qcomp>> vec {
        {-9,-8, -8, -9},
        {7, 7, 6, 6},
        {0, -1, -2, -3},
        {-4_i, -5_i, 0, 0}
    };
    CompMatr b = createCompMatr(2);
    setCompMatr(b, vec);
    reportCompMatr(b);
    destroyCompMatr(b);

    // nested pointers
    int dim = 8;
    qcomp** ptrs = (qcomp**) malloc(dim * sizeof *ptrs);
    for (int i=0; i<dim; i++) {
        ptrs[i] = (qcomp*) malloc(dim * sizeof **ptrs);
        for (int j=0; j<dim; j++)
            ptrs[i][j] = i + j*1i;
    }
    CompMatr c = createCompMatr(3);
    setCompMatr(c, ptrs);
    reportCompMatr(c);
    destroyCompMatr(c);

    // array of pointers (decays, so C++ supported)
    qcomp* ptrArr[8];
    for (int i=0; i<dim; i++)
        ptrArr[i] = ptrs[i];
    CompMatr d = createCompMatr(3);
    setCompMatr(d, ptrArr);
    reportCompMatr(d);
    destroyCompMatr(d);

    // cleanup
    for (int i=0; i<dim; i++)
        free(ptrs[i]);
    free(ptrs);
}


void demo_syncCompMatr() {