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D.13.1.50 isCompatible
Procedure from library gfan.lib (see gfan_lib).
- Usage:
- isCompatible(f,c); f fan, c cone
- Return:
- 1 if f and c live in the same ambient space and
if the intersection of c with any cone of f is a face of each;
0 otherwise
Example:
| | LIB "gfan.lib";
fan f=emptyFan(3);
intmat M1[3][3]=
1,0,0,
0,1,0,
0,0,1;
cone c1=coneViaPoints(M1);
isCompatible(f,c1);
==> 1
insertCone(f,c1);
intmat M2[3][3]=
1,1,1,
1,0,0,
0,1,0;
cone c2=coneViaPoints(M2);
isCompatible(f,c2);
==> 0
intmat M3[3][3]=
1,0,0,
0,1,0,
0,0,-1;
cone c3=coneViaPoints(M3);
isCompatible(f,c3);
==> 1
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