Function demo_syncCompMatr

examples/isolated/initialising_matrices.cpp:198–211

void demo_syncCompMatr() {

    CompMatr a = createCompMatr(2);

    // manually modify the elems
    a.cpuElems[0][0] = 1;
    a.cpuElems[1][1] = 2i;
    a.cpuElems[2][2] = -3i;
    a.cpuElems[3][3] = -2+4_i;
    
    syncCompMatr(a);
    reportCompMatr(a);
    destroyCompMatr(a);
}