| #### D.8.2.8 exclusionTest Procedure from library `interval.lib` (see interval_lib). Usage: exclusion test for roots with interval arithmetic Return: list of boxes Example:
    LIB "interval.lib";
    ring R = 0,(x,y),lp;
    ideal I = 2x2-xy+2y2-2,2x2-3xy+3y2-2;  // V(I) has four elements
    interval i = bounds2(-3/2,3/2);
    box B = list(i, i);
    list result = exclusionTest(I, B, 1/512);
    size(result[1]);
    ==> 0
    size(result[2]);
    ==> 4

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