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require 'test/unit'
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require 'cmath'
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class TestCMath < Test::Unit::TestCase
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def test_sqrt
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assert_equal CMath.sqrt(1.0.i), CMath.sqrt(1.i), '[ruby-core:31672]'
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end
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def test_cbrt_returns_principal_value_of_cube_root
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assert_equal CMath.cbrt(-8), (-8)**(1.0/3), '#3676'
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end
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end
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