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D.8.6.13 containedQ

Procedure from library zeroset.lib (see zeroset_lib).

Usage:
containedQ(data, f [, opt]); data=list; f=any type; opt=integer

Purpose:
test if f is an element of data.

Return:
int
0 if f not contained in data
1 if f contained in data

Options:
opt = 0 : use '==' for comparing f with elements from data
opt = 1 : use sameQ for comparing f with elements from data