Package org.apache.sis.math

Class ArrayVector.Doubles

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<Number>

org.apache.sis.math.Vector

org.apache.sis.math.ArrayVector<Double>

org.apache.sis.math.ArrayVector.Doubles

All Implemented Interfaces:

Serializable, Iterable<Number>, Collection<Number>, List<Number>, RandomAccess, CheckedContainer<Double>

Enclosing class:

ArrayVector<E extends Number>

static final class ArrayVector.Doubles
extends ArrayVector<Double>

A vector backed by an array of type double[].

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.sis.math.ArrayVector

ArrayVector.Decimal, ArrayVector.Doubles

Field Summary

Fields

Modifier and Type	Field	Description
private final double[]	array	The backing array.
private static final long	serialVersionUID	For cross-version compatibility.

Fields inherited from class org.apache.sis.math.Vector

PRIME

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
Doubles(double[] array)	Creates a new vector for the given array.

Method Summary

Modifier and Type	Method	Description
Optional<Buffer>	buffer()	Wraps this vector in a buffer.
double	doubleValue(int index)	Returns the value at the given index.
double[]	doubleValues()	Returns a copy of current data as a floating point array.
(package private) boolean	equals(int lower, int upper, Vector other, int otherOffset)	Returns whether this vector in the given range is equal to the specified vector.
void	fill(int fromIndex, int toIndex, Number value)	Sets the value of all elements in the given range.
float	floatValue(int index)	Returns the value casted as a float, since we may loose precision but the result of the cast is not completely wrong (at worst we get zero of infinity values if the magnitude of the double value was too small or too large).
float[]	floatValues()	Returns a copy of current data as a floating point array.
Number	get(int index)	Returns the value at the given index.
Class<Double>	getElementType()	Returns the type of elements in the backing array.
int	hashCode()	Applies hash code contract specified Vector.hashCode().
(package private) int	indexOf(int toSearch, int index, boolean equality)	Finds index of a match or mismatch (depending on equality).
boolean	isEmptyOrNaN()	Returns true if this vector is empty or contains only NaN values.
boolean	isNaN(int index)	Returns true if the value at the given index is NaN.
boolean	isSinglePrecision()	Returns whether values are convertible to float type.
(package private) NumberRange<Double>	range(IntSupplier indices, int n)	Finds the minimum and maximum values in the array or in a subset of the array.
Number	set(int index, Number value)	Sets the value at the given index.
int	size()	Returns the length of the backing array.
String	stringValue(int index)	Returns the string representation at the given index.

Methods inherited from class org.apache.sis.math.ArrayVector

compress, compress, newInstance, verifyType

Methods inherited from class org.apache.sis.math.Vector

backingVector, byteValue, compress, concatenate, copy, create, create, createConcatenate, createForDecimal, createSequence, createSequence, createSubSampling, createTransform, equals, increment, intValue, isInteger, isUnsigned, longValue, pick, range, repeat, repetitions, reverse, shortValue, subList, subSampling, subtract, toBacking, toString, transform, warning

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, removeRange

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, replaceAll, retainAll, sort, spliterator, toArray, toArray

Field Details

serialVersionUID

private static final long serialVersionUID

For cross-version compatibility.

See Also:

• Constant Field Values

array

private final double[] array

The backing array.

Constructor Details

Doubles

Doubles(double[] array)

Creates a new vector for the given array.

Method Details

getElementType

public Class<Double> getElementType()

Returns the type of elements in the backing array.

Specified by:

getElementType in interface CheckedContainer<Double>

Specified by:

getElementType in class Vector

Returns:

the type of elements in this vector.

See Also:

• CheckedContainer.getElementType()

isSinglePrecision

public boolean isSinglePrecision()

Returns whether values are convertible to float type.

Overrides:

isSinglePrecision in class Vector

Returns:

whether values in this vector can be casted to float primitive type.

See Also:

• Vector.floatValue(int)
• Vector.floatValues()

size

public int size()

Returns the length of the backing array.

Specified by:

size in interface Collection<Number>

Specified by:

size in interface List<Number>

Specified by:

size in class Vector

Returns:

the number of elements in this vector.

isNaN

public boolean isNaN(int index)

Returns true if the value at the given index is NaN.

Overrides:

isNaN in class ArrayVector<Double>

Parameters:

index - the index in the [0 … size-1] range.

Returns:

true if the value at the given index is NaN.

stringValue

public String stringValue(int index)

Returns the string representation at the given index.

Specified by:

stringValue in class Vector

Parameters:

index - the index in the [0 … size-1] range.

Returns:

a string representation of the value at the given index (may be null).

See Also:

• Vector.toString()

doubleValue

public double doubleValue(int index)

Returns the value at the given index.

Specified by:

doubleValue in class Vector

Parameters:

index - the index in the [0 … size-1] range.

Returns:

the value at the given index.

See Also:

• Vector.doubleValues()

floatValue

public float floatValue(int index)

Returns the value casted as a float, since we may loose precision but the result of the cast is not completely wrong (at worst we get zero of infinity values if the magnitude of the double value was too small or too large).

Overrides:

floatValue in class Vector

Parameters:

index - the index in the [0 … size-1] range.

Returns:

the value at the given index.

See Also:

• Vector.floatValues()
• Vector.isSinglePrecision()

get

public Number get(int index)

Returns the value at the given index.

Specified by:

get in interface List<Number>

Specified by:

get in class Vector

Parameters:

index - the index in the [0 … size-1] range.

Returns:

the value at the given index (may be null).

set

public Number set(int index,
 Number value)

Sets the value at the given index.

Specified by:

set in interface List<Number>

Specified by:

set in class Vector

Parameters:

index - the index in the [0 … size-1] range.

value - the value to set at the given index.

Returns:

the value previously stored at the given index.

fill

public void fill(int fromIndex,
 int toIndex,
 Number value)

Sets the value of all elements in the given range.

Overrides:

fill in class Vector

Parameters:

fromIndex - index of the first element (inclusive) to be filled with the specified value.

toIndex - index of the last element (exclusive) to be filled with the specified value.

value - the value to be stored in elements of the vector.

indexOf

int indexOf(int toSearch,
 int index,
 boolean equality)

Finds index of a match or mismatch (depending on equality).

Overrides:

indexOf in class Vector

Parameters:

toSearch - index of the value to search.

index - index of the first value where to start the search.

equality - whether we search the first equal value, or the first different value.

Returns:

index of the value found, or the vector size if the value has not been found.

isEmptyOrNaN

public boolean isEmptyOrNaN()

Returns true if this vector is empty or contains only NaN values.

Overrides:

isEmptyOrNaN in class Vector

Returns:

whether this vector is empty or contains only NaN values.

equals

boolean equals(int lower,
 int upper,
 Vector other,
 int otherOffset)

Returns whether this vector in the given range is equal to the specified vector.

Overrides:

equals in class Vector

Parameters:

lower - index of the first value to compare in this vector, inclusive.

upper - index after the last value to compare in this vector.

other - the other vector to compare values with this vector. May be this.

otherOffset - index of the first element to compare in the other vector.

Returns:

whether values over the specified range of the two vectors are equal.

range

NumberRange<Double> range(IntSupplier indices,
 int n)

Finds the minimum and maximum values in the array or in a subset of the array.

Overrides:

range in class Vector

Parameters:

indices - supplier of indices of the values to examine for computing the range, or null for the 0, 1, 2, … n-1 sequence.

n - number of indices to get from the supplier.

Returns:

the range of all values at the given indices.

buffer

public Optional<Buffer> buffer()

Wraps this vector in a buffer.

Overrides:

buffer in class Vector

Returns:

the vector data as a buffer. Absent if this vector is not backed by an array or a buffer.

doubleValues

public double[] doubleValues()

Returns a copy of current data as a floating point array.

Overrides:

doubleValues in class Vector

Returns:

a copy of all floating point values in this vector.

See Also:

• Vector.doubleValue(int)

floatValues

public float[] floatValues()

Returns a copy of current data as a floating point array.

Overrides:

floatValues in class Vector

Returns:

a copy of all floating point values in this vector.

See Also:

• Vector.floatValue(int)
• Vector.isSinglePrecision()

hashCode

public int hashCode()

Applies hash code contract specified Vector.hashCode().

Specified by:

hashCode in interface Collection<Number>

Specified by:

hashCode in interface List<Number>

Overrides:

hashCode in class Vector

Returns:

a hash code value for the values in this vector.