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D.15.6.4 gkzFan

Procedure from library gitfan.lib (see gitfan_lib).

Usage:
gkzFan(Q); a: ideal, Q:bigintmat

Purpose:
Returns the GKZ-fan of the matrix Q.

Return:
a fan.

Example:
 
LIB "gitfan.lib";
intmat Q[3][4] =
1,0,1,0,
0,1,0,1,
0,0,1,1;
gkzFan(Q);
==> cones found: 1
==> cones found: 2
==> cones found: 3
==> cones found: 4
==> 
==> RAYS
==> 0 1 0	# 0
==> 0 1 1	# 1
==> 1 0 0	# 2
==> 1 0 1	# 3
==> 1 1 1	# 4
==> 
==> MAXIMAL_CONES
==> {0 1 4}	# Dimension 3
==> {0 2 4}
==> {1 3 4}
==> {2 3 4}
==> 


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