Singular Manual: firstoct

| #### D.8.9.3 firstoct Procedure from library `signcond.lib` (see signcond_lib). Usage: firstoct(I); I ideal Return: number: the number of points of V(I) lying in the first octant Assume: I is given by a Groebner basis. Example:
    LIB "signcond.lib";
    ring r = 0,(x,y),dp;
    ideal i = (x-2)*(x+3)*x,y*(y-1);
    firstoct(i);
    ==> 1
See also: signcnd.

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