Singular Manual: npar

| #### D.11.4.6 npar Procedure from library `findifs.lib` (see findifs_lib). Usage: npar(n); n a number Return: int Purpose: searches for 'n' among the parameters and returns its number Example:
    LIB "findifs.lib";
    ring r = (0,dh,dt,theta,A),t,dp;
    npar(dh);
    ==> 1
    number T = theta;
    npar(T);
    ==> 3
    npar(dh^2);
    ==> Incorrect parameter
    ==> 0

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