Class: FloatSqrtInstruction
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
15
16
17
|
# File 'lib/instructions/float/float_sqrt.rb', line 15
def cleanup
pushes :float, @result
end
|
#derive ⇒ Object
8
9
10
11
12
13
14
|
# File 'lib/instructions/float/float_sqrt.rb', line 8
def derive
if @arg1 >= 0.0
@result = ValuePoint.new("float", Math.sqrt(@arg1))
else
raise Instruction::NaNResultError, "#{self.class.to_nudgecode} did not return a float"
end
end
|
#preconditions? ⇒ Boolean
2
3
4
|
# File 'lib/instructions/float/float_sqrt.rb', line 2
def preconditions?
needs :float, 1
end
|
#setup ⇒ Object
5
6
7
|
# File 'lib/instructions/float/float_sqrt.rb', line 5
def setup
@arg1 = @context.pop_value(:float)
end
|