<!-- W  info.tex          Radiroot documentation             Andreas Distler / Y  2006 -->
<Chapter Label="The Info Class of the Package">
<Heading>The Info Class of the Package</Heading>
The <C>info</C> mechanism in &GAP; allows functions to print information
during the computation (see Section <Ref Sect="Info Functions" BookName="ref"/> in the
&GAP; reference manual for general information).
<Section>
<Heading>The Info Class of the Package</Heading>
<ManSection>
<InfoClass Name="InfoRadiroot"/>
<Description>
is the info class of this package.
</Description>
</ManSection>
<ManSection>
<Oper Name="SetInfoLevel" Arg="infoclass, level"/>
<Description>
sets the info level for <C>InfoRadiroot</C> to <A>level</A>, where <A>level</A> has
to be an integer in the range 0-4.
<P/>
The default value for <C>InfoRadiroot</C> is 1. Information why a function
returns <K>fail</K> will be given with this setting.
<Example><![CDATA[
gap> InfoLevel(InfoRadiroot);
1
gap> RootsOfPolynomialAsRadicals(x^5-4*x+2);
#I  Polynomial is not solvable.
fail
]]></Example>
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 <Cite Key="Distler05"/> and of the implementation itself will
find the information on level 3-4 helpful.
<P/>
To use the package in silent mode the info level can be given the
value 0.
</Description>
</ManSection>
</Section>
</Chapter>
