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4.22.3.7 containsPositiveVector

Syntax:
containsPositiveVector( cone c )
Type:
int
Purpose:
1 iff the cone contains a point with positive coordinates in its relative interior; 0 otherwise
Example:
 
LIB"gfanlib.so";
intmat M1[2][2]=
1,1,
1,-1;
cone c1=coneViaPoints(M1);
containsPositiveVector(c1);
==> 1
intmat M2[2][2]=
0,1,
-1,0;
cone c2=coneViaPoints(M2);
containsPositiveVector(c2);
==> 0