|
D.13.2.27 isOrigin
Procedure from library gfan.lib (see gfan_lib).
- Usage:
- isOrigin(c); c cone
- Return:
- 1, if c is the origin; 0 otherwise
Example:
| LIB "gfan.lib";
cone c1;
isOrigin(c1);
==> 1
intmat M2[2][2]=
1,0,
0,1;
cone c2=coneViaPoints(M2);
isOrigin(c2);
==> 0
intmat M3[4][2]=
1,0,
0,1,
-1,0,
0,-1;
cone c3=coneViaPoints(M3);
isOrigin(c3);
==> 0
|
|