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4.22.3.22 isSimplicial

Syntax:
isSimplicial( cone c )
isSimplicial( fan f )
Type:
int
Purpose:
1 iff the cone resp. fan is simplicial; 0 otherwise
Example:
 
LIB"gfanlib.so";
intmat M1[3][3]=
1,0,0,
0,1,0,
0,0,1;
cone c1=coneViaPoints(M1);
isSimplicial(c1);
==> 1
intmat M2[4][3]=
1,0,0,
0,1,0,
0,0,1,
1,1,-1;
cone c2=coneViaPoints(M2);
isSimplicial(c2);
==> 0
/***********************/
fan f=emptyFan(3);
isSimplicial(f);
==> 1
intmat N1[3][3]=
1,0,0,
0,1,0,
0,0,1;
cone d1=coneViaPoints(N1);
insertCone(f,d1);
isSimplicial(f);
==> 1
intmat N2[4][3]=
1,0,0,
0,1,0,
1,0,-1,
0,1,-1;
cone d2=coneViaPoints(N2);
insertCone(f,d2);
isSimplicial(f);
==> 0