Class: IntPowerInstruction
Instance Attribute Summary
Attributes inherited from Instruction
#context
Instance Method Summary
collapse
Methods inherited from Instruction
all_instructions, #go, inherited, #initialize, #needs, #pushes, to_nudgecode
Constructor Details
This class inherits a constructor from Instruction
Instance Method Details
#cleanup ⇒ Object
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# File 'lib/instructions/int/int_power.rb', line 13
def cleanup
pushes :int, @result
end
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#derive ⇒ Object
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# File 'lib/instructions/int/int_power.rb', line 9
def derive
raise NaNResultError,"#{self.class} attempted negative root of 0" if @arg1 == 0 && @arg2 < 0
@result = ValuePoint.new("int", (@arg1**@arg2).to_i)
end
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#preconditions? ⇒ Boolean
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# File 'lib/instructions/int/int_power.rb', line 2
def preconditions?
needs :int, 2
end
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#setup ⇒ Object
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# File 'lib/instructions/int/int_power.rb', line 5
def setup
@arg2 = @context.pop_value(:int)
@arg1 = @context.pop_value(:int)
end
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