Singular Manual: charstr

  | ### 5.1.7 charstr `Syntax:` `charstr (` ring_name `)` `Type:` string `Purpose:` returns the description of the coefficient field of a ring. (Tests for certain types of coefficients should use the routines from `ring.lib` as the string representation may change.) `Example:`
        ring r=32003,(x,y),dp;
        charstr(r);
      ==> ZZ/32003
        ring s=0,(x,y),dp;
        charstr(s);
      ==> QQ
        ring ra=(7,a),(x,y),dp;
        minpoly=a^3+a+1;
        charstr(ra);
      ==> 7,a
        ring rp=(49,a),(x,y),dp;
        charstr(rp);
      ==> 49,a
        ring rr=real,x,dp;
        charstr(rr);
      ==> Float()
See char; ordstr; ring; ring_lib; varstr.

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