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require 'facets/math/pow'
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require 'facets/numeric/range'
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test_case Math do
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class_method :pow do
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test do
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Math.pow( 4.0, 3.0).range(1.0e-6).assert === 64.0
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Math.pow( 0.9, 3.0).range(1.0e-6).assert === 0.729
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Math.pow( 0.25, -0.5).range(1.0e-6).assert === 2.0
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Math.pow( 64.0, -1.0/3).range(1.0e-6).assert === 0.25
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end
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end
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class_method :pwr do
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test do
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Math.pwr( 4.0, 3.0).range(1.0e-6).assert === 64.0
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Math.pwr( 0.9, 3.0).range(1.0e-6).assert === 0.729
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Math.pwr( 0.25, -0.5).range(1.0e-6).assert === 2.0
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Math.pwr( 64.0, -1.0/3).range(1.0e-6).assert === 0.25
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end
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end
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# TODO: Check complementarity of pwr and root
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# assert_equal_float( 4.0, Math.root(Math.pwr(2.0, 6.0), 3.0), 1.0e-6)
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# assert_equal_float( 2.0, Math.root(Math.pwr(4.0, 4.0), 8.0), 1.0e-6)
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# assert_equal_float(Math.sqrt(2.0), Math.pwr(Math.root(2.0, 6.0), 3.0), 1.0e-6)
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# assert_equal_float( 16.0, Math.pwr(Math.root(4.0, 4.0), 8.0), 1.0e-6)
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end
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