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