48 lines
903 B
Ruby
48 lines
903 B
Ruby
#
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# math-mode.rb -
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# $Release Version: 0.9.6$
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# $Revision$
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# by Keiju ISHITSUKA(keiju@ruby-lang.org)
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#
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# --
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#
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#
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#
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require "mathn"
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module IRB
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class Context
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# Returns whether bc mode is enabled.
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#
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# See #math_mode=
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attr_reader :math_mode
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# Alias for #math_mode
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alias math? math_mode
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# Sets bc mode, which loads +lib/mathn.rb+ so fractions or matrix are
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# available.
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#
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# Also available as the +-m+ command line option.
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#
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# See IRB@Command+line+options and the unix manpage <code>bc(1)</code> for
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# more information.
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def math_mode=(opt)
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if @math_mode == true && !opt
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IRB.fail CantReturnToNormalMode
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return
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end
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@math_mode = opt
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if math_mode
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main.extend Math
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print "start math mode\n" if verbose?
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end
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end
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def inspect?
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@inspect_mode.nil? && !@math_mode or @inspect_mode
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end
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end
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end
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