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4.23.4.12 facets

Syntax:
facets( cone c )
facets( polytope p )
Type:
bigintmat
Purpose:
inner normal vectors of the facets of the cone
Example:
 
intmat M1[2][2]=
1,0,
0,1;
cone c1=coneViaRays(M1);
bigintmat F1=facets(c1);
print(F1);
==> 0, 1
==> 1, 0
intmat M2[2][2]=
1,1,
0,-1;
cone c2=coneViaRays(M2);
bigintmat F2=facets(c2);
print(F2);
==> 1, -1
==> 1,  0

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