org.bytedeco.javacpp

Class DoublePointer

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.javacpp.DoublePointer

All Implemented Interfaces:

AutoCloseable

public class DoublePointer
extends Pointer

The peer class to native pointers and arrays of double. All operations take into account the position and limit, when appropriate.

Author:

Samuel Audet

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.DeallocatorReference, Pointer.DeallocatorThread, Pointer.NativeDeallocator

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, deallocatorThread, limit, maxBytes, maxPhysicalBytes, maxRetries, position

Constructor Summary

Constructors

Constructor and Description
DoublePointer()
DoublePointer(double... array) Allocates enough memory for the array and copies it.
DoublePointer(DoubleBuffer buffer) For direct buffers, calls Pointer.Pointer(Buffer), while for buffers backed with an array, allocates enough memory for the array and copies it.
DoublePointer(long size) Allocates a native double array of the given size.
DoublePointer(Pointer p)

Method Summary

Modifier and Type	Method and Description
private void	allocateArray(long size)
DoubleBuffer	asBuffer() Same as Pointer.asByteBuffer(), but can be overridden to return subclasses of Buffer.
DoublePointer	capacity(long capacity) Sets the capacity and returns this.
double	get()
DoublePointer	get(double[] array)
DoublePointer	get(double[] array, int offset, int length) Reads a portion of the native array into a Java array.
double	get(long i)
DoublePointer	limit(long limit) Sets the limit and returns this.
DoublePointer	position(long position) Sets the position and returns this.
DoublePointer	put(double... array)
DoublePointer	put(double d)
DoublePointer	put(double[] array, int offset, int length) Writes a portion of a Java array into the native array.
DoublePointer	put(long i, double d) Copies the double value to the i-th element of a native array.

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asByteBuffer, availablePhysicalBytes, calloc, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, init, isNull, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

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

Constructor Detail

DoublePointer

public DoublePointer(double... array)

Allocates enough memory for the array and copies it.

Parameters:

array - the array to copy

See Also:

put(double[])

DoublePointer

public DoublePointer(DoubleBuffer buffer)

For direct buffers, calls Pointer.Pointer(Buffer), while for buffers backed with an array, allocates enough memory for the array and copies it.

Parameters:

buffer - the Buffer to reference or copy

See Also:

put(double[])

DoublePointer

public DoublePointer(long size)

Allocates a native double array of the given size.

Parameters:

size - the number of double elements to allocate

DoublePointer

public DoublePointer()

See Also:

Pointer.Pointer()

DoublePointer

public DoublePointer(Pointer p)

See Also:

Pointer.Pointer(Pointer)

Method Detail

allocateArray

private void allocateArray(long size)

position

public DoublePointer position(long position)

Description copied from class: Pointer

Sets the position and returns this. That makes the array.position(i) statement sort of equivalent to the array[i] statement in C++.

Overrides:

position in class Pointer

Parameters:

position - the new position

Returns:

this

See Also:

Pointer.position(long)

limit

public DoublePointer limit(long limit)

Description copied from class: Pointer

Sets the limit and returns this. Used to limit the size of an operation on this object.

Overrides:

limit in class Pointer

Parameters:

limit - the new limit

Returns:

this

See Also:

Pointer.limit(long)

capacity

public DoublePointer capacity(long capacity)

Description copied from class: Pointer

Sets the capacity and returns this. Should not be called more than once after allocation.

Overrides:

capacity in class Pointer

Parameters:

capacity - the new capacity

Returns:

this

See Also:

Pointer.capacity(long)

get

public double get()

Returns:

get(0)

get

public double get(long i)

Returns:

the i-th double value of a native array

put

public DoublePointer put(double d)

Returns:

put(0, d)

put

public DoublePointer put(long i,
                         double d)

Copies the double value to the i-th element of a native array.

Parameters:

i - the index into the array

d - the double value to copy

Returns:

this

get

public DoublePointer get(double[] array)

Returns:

get(array, 0, array.length)

put

public DoublePointer put(double... array)

Returns:

put(array, 0, array.length)

get

public DoublePointer get(double[] array,
                         int offset,
                         int length)

Reads a portion of the native array into a Java array.

Parameters:

array - the array to write to

offset - the offset into the array where to start writing

length - the length of data to read and write

Returns:

this

put

public DoublePointer put(double[] array,
                         int offset,
                         int length)

Writes a portion of a Java array into the native array.

Parameters:

array - the array to read from

offset - the offset into the array where to start reading

length - the length of data to read and write

Returns:

this

asBuffer

public final DoubleBuffer asBuffer()

Description copied from class: Pointer

Same as Pointer.asByteBuffer(), but can be overridden to return subclasses of Buffer.

Overrides:

asBuffer in class Pointer

Returns:

asByteBuffer().asDoubleBuffer()

See Also:

BytePointer.asBuffer(), ShortPointer.asBuffer(), IntPointer.asBuffer(), LongPointer.asBuffer(), FloatPointer.asBuffer(), asBuffer(), CharPointer.asBuffer()