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

Example 81 with Rational

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

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);
}

Example 82 with Rational

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

the class RationalTest method testConstructor.

@SmallTest
public void testConstructor() {
    // Simple case
    Rational r = new Rational(1, 2);
    assertEquals(1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Denominator negative
    r = new Rational(-1, 2);
    assertEquals(-1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Numerator negative
    r = new Rational(1, -2);
    assertEquals(-1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Both negative
    r = new Rational(-1, -2);
    assertEquals(1, r.getNumerator());
    assertEquals(2, r.getDenominator());
    // Infinity.
    r = new Rational(1, 0);
    assertEquals(1, r.getNumerator());
    assertEquals(0, r.getDenominator());
    // Negative infinity.
    r = new Rational(-1, 0);
    assertEquals(-1, r.getNumerator());
    assertEquals(0, r.getDenominator());
    // NaN.
    r = new Rational(0, 0);
    assertEquals(0, r.getNumerator());
    assertEquals(0, r.getDenominator());
}

Example 83 with Rational

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

the class StaticMetadata method getAeCompensationRangeChecked.

/**
     * Get value of key android.control.aeCompensationRange and do the sanity check.
     *
     * @return default value if the value is null or malformed.
     */
public Range<Integer> getAeCompensationRangeChecked() {
    Key<Range<Integer>> key = CameraCharacteristics.CONTROL_AE_COMPENSATION_RANGE;
    Range<Integer> compensationRange = getValueFromKeyNonNull(key);
    Rational compensationStep = getAeCompensationStepChecked();
    float compensationStepF = compensationStep.floatValue();
    final Range<Integer> DEFAULT_RANGE = Range.create((int) (CONTROL_AE_COMPENSATION_RANGE_DEFAULT_MIN / compensationStepF), (int) (CONTROL_AE_COMPENSATION_RANGE_DEFAULT_MAX / compensationStepF));
    final Range<Integer> ZERO_RANGE = Range.create(0, 0);
    if (compensationRange == null) {
        return ZERO_RANGE;
    }
    // Legacy devices don't have a minimum range requirement
    if (isHardwareLevelLimitedOrBetter() && !compensationRange.equals(ZERO_RANGE)) {
        checkTrueForKey(key, " range value must be at least " + DEFAULT_RANGE + ", actual " + compensationRange + ", compensation step " + compensationStep, compensationRange.getLower() <= DEFAULT_RANGE.getLower() && compensationRange.getUpper() >= DEFAULT_RANGE.getUpper());
    }
    return compensationRange;
}

Example 84 with Rational

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

the class CameraMetadataTest method testReadWritePrimitive.

@SmallTest
public void testReadWritePrimitive() {
    // int32 (single)
    checkKeyGetAndSet("android.control.aeExposureCompensation", Integer.TYPE, 0xC0FFEE);
    // byte (single)
    checkKeyGetAndSet("android.flash.maxEnergy", Byte.TYPE, (byte) 6);
    // int64 (single)
    checkKeyGetAndSet("android.flash.firingTime", Long.TYPE, 0xABCD12345678FFFFL);
    // float (single)
    checkKeyGetAndSet("android.lens.aperture", Float.TYPE, Float.MAX_VALUE);
    // double (single) -- technically double x 3, but we fake it
    checkKeyGetAndSet("android.jpeg.gpsCoordinates", Double.TYPE, Double.MAX_VALUE);
    // rational (single)
    checkKeyGetAndSet("android.sensor.baseGainFactor", Rational.class, new Rational(1, 2));
    /**
         * Weirder cases, that don't map 1:1 with the native types
         */
    // bool (single) -- with TYPE_BYTE
    checkKeyGetAndSet("android.control.aeLock", Boolean.TYPE, true);
    // integer (single) -- with TYPE_BYTE
    checkKeyGetAndSet("android.control.aePrecaptureTrigger", Integer.TYPE, 6);
}

Example 85 with Rational

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

the class ColorSpaceTransform method copyElements.

/**
     * Copy the {@link Rational} elements in row-major order from this matrix into the destination.
     *
     * @param destination
     *          an array big enough to hold at least {@code 9} elements after the
     *          {@code offset}
     * @param offset
     *          a non-negative offset into the array
     * @throws NullPointerException
     *          If {@code destination} was {@code null}
     * @throws ArrayIndexOutOfBoundsException
     *          If there's not enough room to write the elements at the specified destination and
     *          offset.
     */
public void copyElements(Rational[] destination, int offset) {
    checkArgumentNonnegative(offset, "offset must not be negative");
    checkNotNull(destination, "destination must not be null");
    if (destination.length - offset < COUNT) {
        throw new ArrayIndexOutOfBoundsException("destination too small to fit elements");
    }
    for (int i = 0, j = 0; i < COUNT; ++i, j += RATIONAL_SIZE) {
        int numerator = mElements[j + OFFSET_NUMERATOR];
        int denominator = mElements[j + OFFSET_DENOMINATOR];
        destination[i + offset] = new Rational(numerator, denominator);
    }
}