D.2.6.11 ord_test

Procedure from library ring.lib (see ring_lib).

Usage:

ord_test(r); r ring

Return:

int 1 (resp. -1, resp. 0) if ordering of r is global (resp. local, resp. mixed)

Example:

LIB "ring.lib";
ring R = 0,(x,y),dp;
ring S = 0,(u,v),ls;
ord_test(R);
→ 1
ord_test(S);
→ -1
ord_test(R+S);
→ 0