Package org.apache.commons.math3.fraction

Examples of org.apache.commons.math3.fraction.Fraction

259
260
261
262
263
264
265
    /** test sclarAdd */
    @Test
    public void testScalarAdd() {
        FieldMatrix<Fraction> m = new Array2DRowFieldMatrix<Fraction>(testData);
        TestUtils.assertEquals(new Array2DRowFieldMatrix<Fraction>(testDataPlus2), m.scalarAdd(new Fraction(2)));
    }
View Full Code Here
281
282
283
284
285
286
287
288
289
290
291
292
293
    /** test issue MATH-209 */
    @Test
    public void testMath209() {
        FieldMatrix<Fraction> a = new Array2DRowFieldMatrix<Fraction>(new Fraction[][] {
                { new Fraction(1), new Fraction(2) }, { new Fraction(3), new Fraction(4) }, { new Fraction(5), new Fraction(6) }
        }, false);
        Fraction[] b = a.operate(new Fraction[] { new Fraction(1), new Fraction(1) });
        Assert.assertEquals(a.getRowDimension(), b.length);
        Assert.assertEquals( new Fraction(3), b[0]);
        Assert.assertEquals( new Fraction(7), b[1]);
        Assert.assertEquals(new Fraction(11), b[2]);
    }
View Full Code Here
362
363
364
365
366
367
368
369
370
371
372
    }

    @Test
    public void testGetEntry() {
        FieldMatrix<Fraction> m = new Array2DRowFieldMatrix<Fraction>(testData);
        Assert.assertEquals("get entry", m.getEntry(0,1), new Fraction(2));
        try {
            m.getEntry(10, 4);
            Assert.fail ("Expecting OutOfRangeException");
        } catch (OutOfRangeException ex) {
            // expected
View Full Code Here
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
    /** test examples in user guide */
    @Test
    public void testExamples() {
        // Create a real matrix with two rows and three columns
        Fraction[][] matrixData = {
                {new Fraction(1),new Fraction(2),new Fraction(3)},
                {new Fraction(2),new Fraction(5),new Fraction(3)}
        };
        FieldMatrix<Fraction> m = new Array2DRowFieldMatrix<Fraction>(matrixData);
        // One more with three rows, two columns
        Fraction[][] matrixData2 = {
                {new Fraction(1),new Fraction(2)},
                {new Fraction(2),new Fraction(5)},
                {new Fraction(1), new Fraction(7)}
        };
        FieldMatrix<Fraction> n = new Array2DRowFieldMatrix<Fraction>(matrixData2);
        // Now multiply m by n
        FieldMatrix<Fraction> p = m.multiply(n);
        Assert.assertEquals(2, p.getRowDimension());
        Assert.assertEquals(2, p.getColumnDimension());
        // Invert p
        FieldMatrix<Fraction> pInverse = new FieldLUDecomposition<Fraction>(p).getSolver().getInverse();
        Assert.assertEquals(2, pInverse.getRowDimension());
        Assert.assertEquals(2, pInverse.getColumnDimension());

        // Solve example
        Fraction[][] coefficientsData = {
                {new Fraction(2), new Fraction(3), new Fraction(-2)},
                {new Fraction(-1), new Fraction(7), new Fraction(6)},
                {new Fraction(4), new Fraction(-3), new Fraction(-5)}
        };
        FieldMatrix<Fraction> coefficients = new Array2DRowFieldMatrix<Fraction>(coefficientsData);
        Fraction[] constants = {
            new Fraction(1), new Fraction(-2), new Fraction(1)
        };
        Fraction[] solution;
        solution = new FieldLUDecomposition<Fraction>(coefficients)
            .getSolver()
            .solve(new ArrayFieldVector<Fraction>(constants, false)).toArray();
        Assert.assertEquals(new Fraction(2).multiply(solution[0]).
                     add(new Fraction(3).multiply(solution[1])).
                     subtract(new Fraction(2).multiply(solution[2])), constants[0]);
        Assert.assertEquals(new Fraction(-1).multiply(solution[0]).
                     add(new Fraction(7).multiply(solution[1])).
                     add(new Fraction(6).multiply(solution[2])), constants[1]);
        Assert.assertEquals(new Fraction(4).multiply(solution[0]).
                     subtract(new Fraction(3).multiply(solution[1])).
                     subtract(new Fraction(5).multiply(solution[2])), constants[2]);

    }
View Full Code Here
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
    public void testSetSubMatrix() {
        Array2DRowFieldMatrix<Fraction> m = new Array2DRowFieldMatrix<Fraction>(testData);
        m.setSubMatrix(detData2,1,1);
        FieldMatrix<Fraction> expected = new Array2DRowFieldMatrix<Fraction>
            (new Fraction[][] {
                    {new Fraction(1),new Fraction(2),new Fraction(3)},
                    {new Fraction(2),new Fraction(1),new Fraction(3)},
                    {new Fraction(1),new Fraction(2),new Fraction(4)}
             });
        Assert.assertEquals(expected, m);

        m.setSubMatrix(detData2,0,0);
        expected = new Array2DRowFieldMatrix<Fraction>
            (new Fraction[][] {
                    {new Fraction(1),new Fraction(3),new Fraction(3)},
                    {new Fraction(2),new Fraction(4),new Fraction(3)},
                    {new Fraction(1),new Fraction(2),new Fraction(4)}
             });
        Assert.assertEquals(expected, m);

        m.setSubMatrix(testDataPlus2,0,0);
        expected = new Array2DRowFieldMatrix<Fraction>
            (new Fraction[][] {
                    {new Fraction(3),new Fraction(4),new Fraction(5)},
                    {new Fraction(4),new Fraction(7),new Fraction(5)},
                    {new Fraction(3),new Fraction(2),new Fraction(10)}
             });
        Assert.assertEquals(expected, m);

        // dimension overflow
        try {
            m.setSubMatrix(testData,1,1);
            Assert.fail("expecting OutOfRangeException");
        } catch (OutOfRangeException e) {
            // expected
        }
        // dimension underflow
        try {
            m.setSubMatrix(testData,-1,1);
            Assert.fail("expecting OutOfRangeException");
        } catch (OutOfRangeException e) {
            // expected
        }
        try {
            m.setSubMatrix(testData,1,-1);
            Assert.fail("expecting OutOfRangeException");
        } catch (OutOfRangeException e) {
            // expected
        }

        // null
        try {
            m.setSubMatrix(null, 1, 1);
            Assert.fail("expecting NullArgumentException");
        } catch (NullArgumentException e) {
            // expected
        }
        Array2DRowFieldMatrix<Fraction> m2 = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance());
        try {
            m2.setSubMatrix(testData,0,1);
            Assert.fail("expecting MathIllegalStateException");
        } catch (MathIllegalStateException e) {
            // expected
        }
        try {
            m2.setSubMatrix(testData,1,0);
            Assert.fail("expecting MathIllegalStateException");
        } catch (MathIllegalStateException e) {
            // expected
        }

        // ragged
        try {
            m.setSubMatrix(new Fraction[][] {{new Fraction(1)}, {new Fraction(2), new Fraction(3)}}, 0, 0);
            Assert.fail("expecting MathIllegalArgumentException");
        } catch (MathIllegalArgumentException e) {
            // expected
        }
View Full Code Here
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
        m.walkInRowOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
        getVisitor = new GetVisitor();
        m.walkInOptimizedOrder(getVisitor, 1, rows - 2, 1, columns - 2);
        Assert.assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
        for (int i = 0; i < rows; ++i) {
            Assert.assertEquals(new Fraction(0), m.getEntry(i, 0));
            Assert.assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
        }
        for (int j = 0; j < columns; ++j) {
            Assert.assertEquals(new Fraction(0), m.getEntry(0, j));
            Assert.assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
        }

        m = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
        m.walkInColumnOrder(new SetVisitor());
        getVisitor = new GetVisitor();
        m.walkInOptimizedOrder(getVisitor);
        Assert.assertEquals(rows * columns, getVisitor.getCount());

        m = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
        m.walkInColumnOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
        getVisitor = new GetVisitor();
        m.walkInOptimizedOrder(getVisitor, 1, rows - 2, 1, columns - 2);
        Assert.assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
        for (int i = 0; i < rows; ++i) {
            Assert.assertEquals(new Fraction(0), m.getEntry(i, 0));
            Assert.assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
        }
        for (int j = 0; j < columns; ++j) {
            Assert.assertEquals(new Fraction(0), m.getEntry(0, j));
            Assert.assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
        }

        m = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
        m.walkInOptimizedOrder(new SetVisitor());
        getVisitor = new GetVisitor();
        m.walkInRowOrder(getVisitor);
        Assert.assertEquals(rows * columns, getVisitor.getCount());

        m = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
        m.walkInOptimizedOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
        getVisitor = new GetVisitor();
        m.walkInRowOrder(getVisitor, 1, rows - 2, 1, columns - 2);
        Assert.assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
        for (int i = 0; i < rows; ++i) {
            Assert.assertEquals(new Fraction(0), m.getEntry(i, 0));
            Assert.assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
        }
        for (int j = 0; j < columns; ++j) {
            Assert.assertEquals(new Fraction(0), m.getEntry(0, j));
            Assert.assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
        }

        m = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
        m.walkInOptimizedOrder(new SetVisitor());
        getVisitor = new GetVisitor();
        m.walkInColumnOrder(getVisitor);
        Assert.assertEquals(rows * columns, getVisitor.getCount());

        m = new Array2DRowFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
        m.walkInOptimizedOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
        getVisitor = new GetVisitor();
        m.walkInColumnOrder(getVisitor, 1, rows - 2, 1, columns - 2);
        Assert.assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
        for (int i = 0; i < rows; ++i) {
            Assert.assertEquals(new Fraction(0), m.getEntry(i, 0));
            Assert.assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
        }
        for (int j = 0; j < columns; ++j) {
            Assert.assertEquals(new Fraction(0), m.getEntry(0, j));
            Assert.assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
        }
    }
View Full Code Here
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
        if (matrix.getRowDimension() != permutation.length) {
            throw new DimensionMismatchException(matrix.getRowDimension(), permutation.length);
        }
        int n = matrix.getRowDimension();
        int m = matrix.getColumnDimension();
        Fraction out[][] = new Fraction[m][n];
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                out[i][j] = matrix.getEntry(permutation[i], j);
            }
        }
View Full Code Here
1063
1064
1065
1066
1067
1068
1069
        public SetVisitor() {
            super(Fraction.ZERO);
        }
        @Override
        public Fraction visit(int i, int j, Fraction value) {
            return new Fraction(i * 1024 + j, 1024);
        }
View Full Code Here
1076
1077
1078
1079
1080
1081
1082
            count = 0;
        }
        @Override
        public void visit(int i, int j, Fraction value) {
            ++count;
            Assert.assertEquals(new Fraction(i * 1024 + j, 1024), value);
        }
View Full Code Here
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
        ArrayFieldVector<Fraction> v1 = new ArrayFieldVector<Fraction>(FractionField.getInstance(), 7);
        Assert.assertEquals(7, v1.getDimension());
        Assert.assertEquals(Fraction.ZERO, v1.getEntry(6));

        ArrayFieldVector<Fraction> v2 = new ArrayFieldVector<Fraction>(5, new Fraction(123, 100));
        Assert.assertEquals(5, v2.getDimension());
        Assert.assertEquals(new Fraction(123, 100), v2.getEntry(4));

        ArrayFieldVector<Fraction> v3 = new ArrayFieldVector<Fraction>(FractionField.getInstance(), vec1);
        Assert.assertEquals(3, v3.getDimension());
        Assert.assertEquals(new Fraction(2), v3.getEntry(1));

        ArrayFieldVector<Fraction> v4 = new ArrayFieldVector<Fraction>(FractionField.getInstance(), vec4, 3, 2);
        Assert.assertEquals(2, v4.getDimension());
        Assert.assertEquals(new Fraction(4), v4.getEntry(0));
        try {
            new ArrayFieldVector<Fraction>(vec4, 8, 3);
            Assert.fail("MathIllegalArgumentException expected");
        } catch (MathIllegalArgumentException ex) {
            // expected behavior
        }

        FieldVector<Fraction> v5_i = new ArrayFieldVector<Fraction>(dvec1);
        Assert.assertEquals(9, v5_i.getDimension());
        Assert.assertEquals(new Fraction(9), v5_i.getEntry(8));

        ArrayFieldVector<Fraction> v5 = new ArrayFieldVector<Fraction>(dvec1);
        Assert.assertEquals(9, v5.getDimension());
        Assert.assertEquals(new Fraction(9), v5.getEntry(8));

        ArrayFieldVector<Fraction> v6 = new ArrayFieldVector<Fraction>(dvec1, 3, 2);
        Assert.assertEquals(2, v6.getDimension());
        Assert.assertEquals(new Fraction(4), v6.getEntry(0));
        try {
            new ArrayFieldVector<Fraction>(dvec1, 8, 3);
            Assert.fail("MathIllegalArgumentException expected");
        } catch (MathIllegalArgumentException ex) {
            // expected behavior
        }

        ArrayFieldVector<Fraction> v7 = new ArrayFieldVector<Fraction>(v1);
        Assert.assertEquals(7, v7.getDimension());
        Assert.assertEquals(Fraction.ZERO, v7.getEntry(6));

        FieldVectorTestImpl<Fraction> v7_i = new FieldVectorTestImpl<Fraction>(vec1);

        ArrayFieldVector<Fraction> v7_2 = new ArrayFieldVector<Fraction>(v7_i);
        Assert.assertEquals(3, v7_2.getDimension());
        Assert.assertEquals(new Fraction(2), v7_2.getEntry(1));

        ArrayFieldVector<Fraction> v8 = new ArrayFieldVector<Fraction>(v1, true);
        Assert.assertEquals(7, v8.getDimension());
        Assert.assertEquals(Fraction.ZERO, v8.getEntry(6));
        Assert.assertNotSame("testData not same object ", v1.getDataRef(), v8.getDataRef());

        ArrayFieldVector<Fraction> v8_2 = new ArrayFieldVector<Fraction>(v1, false);
        Assert.assertEquals(7, v8_2.getDimension());
        Assert.assertEquals(Fraction.ZERO, v8_2.getEntry(6));
        Assert.assertArrayEquals(v1.getDataRef(), v8_2.getDataRef());

        ArrayFieldVector<Fraction> v9 = new ArrayFieldVector<Fraction>((FieldVector<Fraction>) v1, (FieldVector<Fraction>) v3);
        Assert.assertEquals(10, v9.getDimension());
        Assert.assertEquals(new Fraction(1), v9.getEntry(7));

    }
View Full Code Here
TOP

Related Classes of org.apache.commons.math3.fraction.Fraction

  • fraction.FractionTest
  • org.apache.commons.math3.analysis.differentiation.DerivativeStructure
  • org.apache.commons.math3.analysis.differentiation.MultivariateDifferentiableVectorFunction
  • org.apache.commons.math3.analysis.function.HarmonicOscillator
  • org.apache.commons.math3.analysis.function.Sin
  • org.apache.commons.math3.analysis.function.Sinc
  • org.apache.commons.math3.analysis.MultivariateFunction
  • org.apache.commons.math3.analysis.QuinticFunction
  • org.apache.commons.math3.analysis.solvers.BrentSolver
  • org.apache.commons.math3.analysis.UnivariateFunction
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.