Singular Manual: length

| #### D.8.8.2 length Procedure from library `rootisolation.lib` (see rootisolation_lib). Usage: `length(I)`; `I interval` Return: number, the Euclidean length of the interval Example:
    LIB "rootisolation.lib";
    ring R = 0,x,dp;
    interval I = -1,3;
    length(I);
    ==> 4
    I = 1/5,1/3;
    length(I);
    ==> 2/15

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