Examples with Rational android.util.Rational used on opensource projects

Example 51 with Rational

use of android.util.Rational in project platform_frameworks_base by android.

the class RangeTest method testEquals.

@SmallTest
public void testEquals() {
    Range<Float> oneHalf = Range.create(1.0f, 2.0f);
    Range<Float> oneHalf2 = new Range<Float>(1.0f, 2.0f);
    assertEquals(oneHalf, oneHalf2);
    assertHashCodeEquals(oneHalf, oneHalf2);
    Range<Float> twoThirds = new Range<Float>(2.0f, 3.0f);
    Range<Float> twoThirds2 = Range.create(2.0f, 3.0f);
    assertEquals(twoThirds, twoThirds2);
    assertHashCodeEquals(twoThirds, twoThirds2);
    Range<Rational> negativeOneTenthPositiveOneTenth = new Range<Rational>(new Rational(-1, 10), new Rational(1, 10));
    Range<Rational> negativeOneTenthPositiveOneTenth2 = Range.create(new Rational(-1, 10), new Rational(1, 10));
    assertEquals(negativeOneTenthPositiveOneTenth, negativeOneTenthPositiveOneTenth2);
    assertHashCodeEquals(negativeOneTenthPositiveOneTenth, negativeOneTenthPositiveOneTenth2);
}

Example 52 with Rational

use of android.util.Rational in project platform_frameworks_base by android.

the class RangeTest method testInRange.

@SmallTest
public void testInRange() {
    Range<Integer> hundredOneTwo = Range.create(100, 200);
    assertInRange(hundredOneTwo, 100);
    assertInRange(hundredOneTwo, 200);
    assertInRange(hundredOneTwo, 150);
    assertOutOfRange(hundredOneTwo, 99);
    assertOutOfRange(hundredOneTwo, 201);
    assertOutOfRange(hundredOneTwo, 100000);
    Range<Float> infinities = Range.create(Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
    assertInRange(infinities, Float.NEGATIVE_INFINITY);
    assertInRange(infinities, Float.POSITIVE_INFINITY);
    assertInRange(infinities, 0.0f);
    assertOutOfRange(infinities, Float.NaN);
    Range<Rational> negativeOneTenthPositiveOneTenth = new Range<Rational>(new Rational(-1, 10), new Rational(1, 10));
    assertInRange(negativeOneTenthPositiveOneTenth, new Rational(-1, 10));
    assertInRange(negativeOneTenthPositiveOneTenth, new Rational(1, 10));
    assertInRange(negativeOneTenthPositiveOneTenth, Rational.ZERO);
    assertOutOfRange(negativeOneTenthPositiveOneTenth, new Rational(-100, 1));
    assertOutOfRange(negativeOneTenthPositiveOneTenth, new Rational(100, 1));
}

Example 53 with Rational

use of android.util.Rational in project platform_frameworks_base by android.

the class RationalTest method testValueConversions.

@SmallTest
public void testValueConversions() {
    // Unit, simple case
    assertValueEquals(UNIT, 1.0f);
    assertValueEquals(UNIT, 1.0);
    assertValueEquals(UNIT, 1L);
    assertValueEquals(UNIT, 1);
    assertValueEquals(UNIT, (short) 1);
    // Zero, simple case
    assertValueEquals(ZERO, 0.0f);
    assertValueEquals(ZERO, 0.0);
    assertValueEquals(ZERO, 0L);
    assertValueEquals(ZERO, 0);
    assertValueEquals(ZERO, (short) 0);
    // NaN is 0 for integers, not-a-number for floating point
    assertValueEquals(NaN, Float.NaN);
    assertValueEquals(NaN, Double.NaN);
    assertValueEquals(NaN, 0L);
    assertValueEquals(NaN, 0);
    assertValueEquals(NaN, (short) 0);
    // Positive infinity, saturates upwards for integers
    assertValueEquals(POSITIVE_INFINITY, Float.POSITIVE_INFINITY);
    assertValueEquals(POSITIVE_INFINITY, Double.POSITIVE_INFINITY);
    assertValueEquals(POSITIVE_INFINITY, Long.MAX_VALUE);
    assertValueEquals(POSITIVE_INFINITY, Integer.MAX_VALUE);
    assertValueEquals(POSITIVE_INFINITY, (short) -1);
    // Negative infinity, saturates downwards for integers
    assertValueEquals(NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY);
    assertValueEquals(NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY);
    assertValueEquals(NEGATIVE_INFINITY, Long.MIN_VALUE);
    assertValueEquals(NEGATIVE_INFINITY, Integer.MIN_VALUE);
    assertValueEquals(NEGATIVE_INFINITY, (short) 0);
    // Normal finite values, round down for integers
    final Rational oneQuarter = new Rational(1, 4);
    assertValueEquals(oneQuarter, 1.0f / 4.0f);
    assertValueEquals(oneQuarter, 1.0 / 4.0);
    assertValueEquals(oneQuarter, 0L);
    assertValueEquals(oneQuarter, 0);
    assertValueEquals(oneQuarter, (short) 0);
    final Rational nineFifths = new Rational(9, 5);
    assertValueEquals(nineFifths, 9.0f / 5.0f);
    assertValueEquals(nineFifths, 9.0 / 5.0);
    assertValueEquals(nineFifths, 1L);
    assertValueEquals(nineFifths, 1);
    assertValueEquals(nineFifths, (short) 1);
    final Rational negativeHundred = new Rational(-1000, 10);
    assertValueEquals(negativeHundred, -100.f / 1.f);
    assertValueEquals(negativeHundred, -100.0 / 1.0);
    assertValueEquals(negativeHundred, -100L);
    assertValueEquals(negativeHundred, -100);
    assertValueEquals(negativeHundred, (short) -100);
    // Short truncates if the result is too large
    assertValueEquals(new Rational(Integer.MAX_VALUE, 1), (short) Integer.MAX_VALUE);
    assertValueEquals(new Rational(0x00FFFFFF, 1), (short) 0x00FFFFFF);
    assertValueEquals(new Rational(0x00FF00FF, 1), (short) 0x00FF00FF);
}

Example 54 with Rational

use of android.util.Rational in project platform_frameworks_base by android.

the class RationalTest method testReduction.

@SmallTest
public void testReduction() {
    Rational moreComplicated = new Rational(5 * 78, 7 * 78);
    assertEquals(new Rational(5, 7), moreComplicated);
    assertEquals(5, moreComplicated.getNumerator());
    assertEquals(7, moreComplicated.getDenominator());
    Rational posInf = new Rational(5, 0);
    assertEquals(1, posInf.getNumerator());
    assertEquals(0, posInf.getDenominator());
    assertEquals(POSITIVE_INFINITY, posInf);
    Rational negInf = new Rational(-100, 0);
    assertEquals(-1, negInf.getNumerator());
    assertEquals(0, negInf.getDenominator());
    assertEquals(NEGATIVE_INFINITY, negInf);
    Rational zero = new Rational(0, -100);
    assertEquals(0, zero.getNumerator());
    assertEquals(1, zero.getDenominator());
    assertEquals(ZERO, zero);
    Rational flipSigns = new Rational(1, -1);
    assertEquals(-1, flipSigns.getNumerator());
    assertEquals(1, flipSigns.getDenominator());
    Rational flipAndReduce = new Rational(100, -200);
    assertEquals(-1, flipAndReduce.getNumerator());
    assertEquals(2, flipAndReduce.getDenominator());
}

Example 55 with Rational

use of android.util.Rational in project platform_frameworks_base by android.

the class RationalTest method createIllegalRational.

private static Rational createIllegalRational(int numerator, int denominator) {
    Rational r = new Rational(numerator, denominator);
    mutateField(r, "mNumerator", numerator);
    mutateField(r, "mDenominator", denominator);
    return r;
}