Capítulo 13. Preferências
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# Capítulo 13. Preferências

To configure Genius Mathematics Tool, choose Settings → Preferences. There are several basic parameters provided by the calculator in addition to the ones provided by the standard library. These control how the calculator behaves.

### Changing Settings with GEL

Many of the settings in Genius are simply global variables, and can be evaluated and assigned to in the same way as normal variables. See “Using Variables” about evaluating and assigning to variables, and “Parâmetros” for a list of settings that can be modified in this way.

As an example, you can set the maximum number of digits in a result to 12 by typing:

    MaxDigits = 12

## Saída

Maximum digits to output

  The maximum digits in a result (`MaxDigits`)

Resultados como números reais

  If the results should be always printed as floats (`ResultsAsFloats`)

Resultados em notação científica

  If floats should be in scientific notation (`ScientificNotation`)

Sempre mostrar expressões completas

  Should we print out full expressions for non-numeric return values (longer than a line) (`FullExpressions`)

Usa frações mistas

  If fractions should be printed as mixed fractions such as "1 1/3" rather than "4/3". (`MixedFractions`)

Exibir 0.0 quando o número de ponto flutuante for menor que 10^-x (0=nunca arredondar)

  How to chop output. But only when other numbers nearby are large. See the documentation of the parameter `OutputChopExponent`.

Só arredondar números quando outro número for maior que 10^-x

  When to chop output. This is set by the parameter `OutputChopWhenExponent`. See the documentation of the parameter `OutputChopExponent`.

Lembrar a saída de configurações entre sessões

  Should the output settings in the Number/Expression output options frame be remembered for next session. Does not apply to the Error/Info output options frame.

  If unchecked, either the default or any previously saved settings are used each time Genius starts up. Note that settings are saved at the end of the session, so if you wish to change the defaults check this box, restart Genius Mathematics Tool and then uncheck it again.

Exibir erros em uma caixa de diálogo

  If set the errors will be displayed in a separate dialog, if unset the errors will be printed on the console.

Exibir mensagens de informação em uma caixa de diálogo

  If set the information messages will be displayed in a separate dialog, if unset the information messages will be printed on the console.

Erros máximos para mostrar

  The maximum number of errors to return on one evaluation (`MaxErrors`). If you set this to 0 then all errors are always returned. Usually if some loop causes many errors, then it is unlikely that you will be able to make sense out of more than a few of these, so seeing a long list of errors is usually not helpful.

In addition to these preferences, there are some preferences that can only be changed by setting them in the workspace console. For others that may affect the output see “Parâmetros”.

`IntegerOutputBase`

  The base that will be used to output integers

`OutputStyle`

  A string, can be `"normal"`, `"latex"`, `"mathml"` or `"troff"` and it will affect how matrices (and perhaps other stuff) is printed, useful for pasting into documents. Normal style is the default human readable printing style of Genius Mathematics Tool. The other styles are for typesetting in LaTeX, MathML (XML), or in Troff.

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Capítulo 12. Example Programs in GEL | Principal | Precisão