| #### D.13.2.35 randomPoint Procedure from library `gfan.lib` (see gfan_lib). Usage: randomPoint(c); c cone randomPoint(c,b); c cone, b int Return: bigintmat, a random point in the relative interior of c Note: returns a weighted sum over all its rays if b is given and b>0, only chooses weights between 1 and b Example:
    LIB "gfan.lib";
    intmat M[2][2]=
    1,0,
    0,1;
    cone c=coneViaPoints(M);
    bigintmat Q=randomPoint(c);
    print(Q);
    ==> 1335380034,380636641
    bigintmat P=randomPoint(c,5);
    print(P);
    ==> 4,4

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