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

Example 26 with Rational

use of android.util.Rational in project android_frameworks_base by crdroidandroid.

the class Utils method parseRationalRange.

static Range<Rational> parseRationalRange(Object o, Range<Rational> fallback) {
    try {
        String s = (String) o;
        int ix = s.indexOf('-');
        if (ix >= 0) {
            return Range.create(Rational.parseRational(s.substring(0, ix)), Rational.parseRational(s.substring(ix + 1)));
        }
        Rational value = Rational.parseRational(s);
        return Range.create(value, value);
    } catch (ClassCastException e) {
    } catch (NumberFormatException e) {
    } catch (NullPointerException e) {
        return fallback;
    } catch (IllegalArgumentException e) {
    }
    Log.w(TAG, "could not parse rational range '" + o + "'");
    return fallback;
}

Example 27 with Rational

use of android.util.Rational in project android_frameworks_base by crdroidandroid.

the class StaticMetadata method getAeCompensationStepChecked.

/**
     * Get value of key android.control.aeCompensationStep and do the sanity check.
     *
     * @return default value if the value is null.
     */
public Rational getAeCompensationStepChecked() {
    Key<Rational> key = CameraCharacteristics.CONTROL_AE_COMPENSATION_STEP;
    Rational compensationStep = getValueFromKeyNonNull(key);
    if (compensationStep == null) {
        // Return default step.
        return CONTROL_AE_COMPENSATION_STEP_DEFAULT;
    }
    // Legacy devices don't have a minimum step requirement
    if (isHardwareLevelLimitedOrBetter()) {
        float compensationStepF = (float) compensationStep.getNumerator() / compensationStep.getDenominator();
        checkTrueForKey(key, " value must be no more than 1/2", compensationStepF <= 0.5f);
    }
    return compensationStep;
}

Example 28 with Rational

use of android.util.Rational in project android_frameworks_base by crdroidandroid.

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 29 with Rational

use of android.util.Rational in project android_frameworks_base by crdroidandroid.

the class RationalTest method testEquals.

@SmallTest
public void testEquals() {
    Rational r = new Rational(1, 2);
    assertEquals(1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    assertEquals(r, r);
    assertFalse(r.equals(null));
    assertFalse(r.equals(new Object()));
    Rational twoThirds = new Rational(2, 3);
    assertFalse(r.equals(twoThirds));
    assertFalse(twoThirds.equals(r));
    Rational fourSixths = new Rational(4, 6);
    assertEquals(twoThirds, fourSixths);
    assertEquals(fourSixths, twoThirds);
    Rational moreComplicated = new Rational(5 * 6 * 7 * 8 * 9, 1 * 2 * 3 * 4 * 5);
    Rational moreComplicated2 = new Rational(5 * 6 * 7 * 8 * 9 * 78, 1 * 2 * 3 * 4 * 5 * 78);
    assertEquals(moreComplicated, moreComplicated2);
    assertEquals(moreComplicated2, moreComplicated);
    // Ensure negatives are fine
    twoThirds = new Rational(-2, 3);
    fourSixths = new Rational(-4, 6);
    assertEquals(twoThirds, fourSixths);
    assertEquals(fourSixths, twoThirds);
    moreComplicated = new Rational(-5 * 6 * 7 * 8 * 9, 1 * 2 * 3 * 4 * 5);
    moreComplicated2 = new Rational(-5 * 6 * 7 * 8 * 9 * 78, 1 * 2 * 3 * 4 * 5 * 78);
    assertEquals(moreComplicated, moreComplicated2);
    assertEquals(moreComplicated2, moreComplicated);
    // Zero is always equal to itself
    Rational zero2 = new Rational(0, 100);
    assertEquals(ZERO, zero2);
    assertEquals(zero2, ZERO);
    // NaN is always equal to itself
    Rational nan = NaN;
    Rational nan2 = new Rational(0, 0);
    assertTrue(nan.equals(nan));
    assertTrue(nan.equals(nan2));
    assertTrue(nan2.equals(nan));
    assertFalse(nan.equals(r));
    assertFalse(r.equals(nan));
    // Infinities of the same sign are equal.
    Rational posInf = POSITIVE_INFINITY;
    Rational posInf2 = new Rational(2, 0);
    Rational negInf = NEGATIVE_INFINITY;
    Rational negInf2 = new Rational(-2, 0);
    assertEquals(posInf, posInf);
    assertEquals(negInf, negInf);
    assertEquals(posInf, posInf2);
    assertEquals(negInf, negInf2);
    // Infinities aren't equal to anything else.
    assertFalse(posInf.equals(negInf));
    assertFalse(negInf.equals(posInf));
    assertFalse(negInf.equals(r));
    assertFalse(posInf.equals(r));
    assertFalse(r.equals(negInf));
    assertFalse(r.equals(posInf));
    assertFalse(posInf.equals(nan));
    assertFalse(negInf.equals(nan));
    assertFalse(nan.equals(posInf));
    assertFalse(nan.equals(negInf));
}

Example 30 with Rational

use of android.util.Rational in project android_frameworks_base by crdroidandroid.

the class RationalTest method testCompareTo.

@SmallTest
public void testCompareTo() {
    // unit is equal to itself
    assertCompareEquals(UNIT, new Rational(1, 1));
    // NaN is greater than anything but NaN
    assertCompareEquals(NaN, new Rational(0, 0));
    assertGreaterThan(NaN, UNIT);
    assertGreaterThan(NaN, POSITIVE_INFINITY);
    assertGreaterThan(NaN, NEGATIVE_INFINITY);
    assertGreaterThan(NaN, ZERO);
    // Positive infinity is greater than any other non-NaN
    assertCompareEquals(POSITIVE_INFINITY, new Rational(1, 0));
    assertGreaterThan(POSITIVE_INFINITY, UNIT);
    assertGreaterThan(POSITIVE_INFINITY, NEGATIVE_INFINITY);
    assertGreaterThan(POSITIVE_INFINITY, ZERO);
    // Negative infinity is smaller than any other non-NaN
    assertCompareEquals(NEGATIVE_INFINITY, new Rational(-1, 0));
    assertLessThan(NEGATIVE_INFINITY, UNIT);
    assertLessThan(NEGATIVE_INFINITY, POSITIVE_INFINITY);
    assertLessThan(NEGATIVE_INFINITY, ZERO);
    // A finite number with the same denominator is trivially comparable
    assertGreaterThan(new Rational(3, 100), new Rational(1, 100));
    assertGreaterThan(new Rational(3, 100), ZERO);
    // Compare finite numbers with different divisors
    assertGreaterThan(new Rational(5, 25), new Rational(1, 10));
    assertGreaterThan(new Rational(5, 25), ZERO);
    // Compare finite numbers with different signs
    assertGreaterThan(new Rational(5, 25), new Rational(-1, 10));
    assertLessThan(new Rational(-5, 25), ZERO);
}