| #### D.13.2.4 ambientDimension Procedure from library `gfan.lib` (see gfan_lib). Usage: ambientDimension(c); c cone ambientDimension(f); f fan ambientDimension(p); p polytope Return: int, the dimension of the ambient space the input lives in Example:
    LIB "gfan.lib";
    intmat M1[2][2]=
    1,0,
    0,1;
    cone c1=coneViaPoints(M1);
    ambientDimension(c1);
    ==> 2
    intmat M2[2][3]=
    1,0,0,
    0,1,0;
    cone c2=coneViaPoints(M2);
    ambientDimension(c2);
    ==> 3
    fan f = emptyFan(3);
    ambientDimension(f);
    ==> 3

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