Examples of CBRT

org.apache.commons.math3.analysis.function.Cbrt
Cube root function. @since 3.0
org.apache.pig.piggybank.evaluation.math.CBRT
math.CBRT implements a binding to the Java function {@link java.lang.Math#cbrt(double) Math.cbrt(double)} for computing thecube root of the argument. The returned value will be a double which is cube root value of the input.

Parameters:

value - DataAtom [double].

Return Value:

DataAtom [double]

Return Schema:

cbrt_inputSchema

Example:

register math.jar; A = load 'mydata' using PigStorage() as ( float1 ); B = foreach A generate float1, math.cbrt(float1);

@see Math#cbrt(double) @see @author ajay garg

Examples of org.apache.commons.math3.analysis.function.Cbrt

    protected UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Cbrt

    protected UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Cbrt

    protected UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum(), new Ulp()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Cbrt

    private UnivariateFunction[] createFunctions() {
        return new UnivariateFunction[] {
            new Power(2.0), new Exp(), new Expm1(), new Log(), new Log10(),
            new Log1p(), new Cosh(), new Sinh(), new Tanh(), new Cos(),
            new Sin(), new Tan(), new Acos(), new Asin(), new Atan(),
            new Inverse(), new Abs(), new Sqrt(), new Cbrt(), new Ceil(),
            new Floor(), new Rint(), new Signum(), new Ulp()
        };
    }

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Examples of org.apache.commons.math3.analysis.function.Cbrt


        double[] cbrt_a = {-2.0d, 0.0d, 2.0d};
        OpenMapRealVector cbrt_v = new OpenMapRealVector(cbrt_a);


        //octave =  ???
        RealVector v_mapCbrt = cbrt_v.map(new Cbrt());
        double[] result_mapCbrt = {-1.2599210498948732d,0d,1.2599210498948732d};
        assertClose("compare vectors" ,result_mapCbrt,v_mapCbrt.toArray(),normTolerance);


        //octave = ???
        RealVector v_mapCbrtToSelf = cbrt_v.copy();
        v_mapCbrtToSelf.mapToSelf(new Cbrt());
        double[] result_mapCbrtToSelf =  {-1.2599210498948732d,0d,1.2599210498948732d};
        assertClose("compare vectors" ,result_mapCbrtToSelf,v_mapCbrtToSelf.toArray(),normTolerance);


        double[] ceil_a = {-1.1d, 0.9d, 1.1d};
        OpenMapRealVector ceil_v = new OpenMapRealVector(ceil_a);

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Examples of org.apache.commons.math3.analysis.function.Cbrt


        double[] cbrt_a = {-2.0d, 0.0d, 2.0d};
        ArrayRealVector cbrt_v = new ArrayRealVector(cbrt_a);


        //octave =  ???
        RealVector v_mapCbrt = cbrt_v.map(new Cbrt());
        double[] result_mapCbrt = {-1.2599210498948732d,0d,1.2599210498948732d};
        assertClose("compare vectors" ,result_mapCbrt,v_mapCbrt.toArray(),normTolerance);


        //octave = ???
        RealVector v_mapCbrtToSelf = cbrt_v.copy();
        v_mapCbrtToSelf.mapToSelf(new Cbrt());
        double[] result_mapCbrtToSelf =  {-1.2599210498948732d,0d,1.2599210498948732d};
        assertClose("compare vectors" ,result_mapCbrtToSelf,v_mapCbrtToSelf.toArray(),normTolerance);


        double[] ceil_a = {-1.1d, 0.9d, 1.1d};
        ArrayRealVector ceil_v = new ArrayRealVector(ceil_a);

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Examples of org.apache.pig.piggybank.evaluation.math.CBRT

          double actual = (new Double(output.strval())).doubleValue();
          assertEquals(actual, expected, delta);
      }
   
   public void testCBRT() throws Exception{
       EvalFunc<DataAtom> CBRT = new CBRT();
          Tuple tup = new Tuple(1);
          tup.setField(0, 0.5);
          DataAtom output = new DataAtom();
          CBRT.exec(tup, output);
          double expected = Math.cbrt(0.5);
          double actual = (new Double(output.strval())).doubleValue();
          assertEquals(actual, expected, delta);
   }

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