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# 3 The Info Class of the Package

The `info` mechanism in GAP allows functions to print information during the computation (see Section Info Functions in the GAP reference manual for general information).

- `InfoRadiroot`

  is the info class of this package.

- `SetInfoLevel( InfoRadiroot,` level`)`

  sets the info level for `InfoRadiroot` to level, where level has to be an integer in the range 0-4.

  The default value for `InfoRadiroot` is 1. Information why a function returns `fail` will be given with this setting.

      gap> InfoLevel(InfoRadiroot);
      1
      gap> RootsOfPolynomialAsRadicals(x^5-4*x+2);
      #I  Polynomial is not solvable.
      fail

  Setting the info level to a higher value will cause messages to show up during single steps of the computation. On level 2 one gets a rough overview. Those who want to go into the details of the algorithm described in Distler05 and of the implementation itself will find the information on level 3-4 helpful.

  To use the package in silent mode the info level can be given the value 0.

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