Package org.bytedeco.javacpp
Class DoublePointer
java.lang.Object
org.bytedeco.javacpp.Pointer
org.bytedeco.javacpp.DoublePointer
- All Implemented Interfaces:
AutoCloseable
The peer class to native pointers and arrays of
double
.
All operations take into account the position and limit, when appropriate.-
Nested Class Summary
Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer
Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.DeallocatorReference, Pointer.DeallocatorThread, Pointer.NativeDeallocator, Pointer.ProxyDeallocator, Pointer.ReferenceCounter
-
Field Summary
FieldsFields inherited from class org.bytedeco.javacpp.Pointer
address, capacity, deallocatorThread, limit, maxBytes, maxPhysicalBytes, maxRetries, position
-
Constructor Summary
ConstructorsConstructorDescriptionDoublePointer
(double... array) Allocates enough memory for the array and copies it.DoublePointer
(long size) Allocates a nativedouble
array of the given size.DoublePointer
(DoubleBuffer buffer) For direct buffers, callsPointer(Buffer)
, while for buffers backed with an array, allocates enough memory for the array and copies it. -
Method Summary
Modifier and TypeMethodDescriptionprivate void
allocateArray
(long size) final DoubleBuffer
asBuffer()
Same asPointer.asByteBuffer()
, but can be overridden to return subclasses of Buffer.capacity
(long capacity) Sets the capacity and returns this.double
get()
get
(double[] array) get
(double[] array, int offset, int length) Reads a portion of the native array into a Java array.double
get
(long i) getPointer
(long i) ReturnsgetPointer(getClass(), i)
.limit
(long limit) Sets the limit and returns this.position
(long position) Sets the position and returns this.put
(double d) put
(double... array) put
(double[] array, int offset, int length) Writes a portion of a Java array into the native array.put
(long i, double d) Copies thedouble
value to the i-th element of a native array.int
sizeof()
Returns 1 for Pointer or BytePointer elseLoader.sizeof(getClass())
or -1 on error.Methods inherited from class org.bytedeco.javacpp.Pointer
address, asByteBuffer, availablePhysicalBytes, calloc, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, getDirectBufferAddress, getPointer, getPointer, getPointer, hashCode, init, interruptDeallocatorThread, isNull, isNull, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, physicalBytesInaccurate, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalCount, totalPhysicalBytes, withDeallocator, zero
-
Field Details
-
logger
-
-
Constructor Details
-
DoublePointer
public DoublePointer(double... array) Allocates enough memory for the array and copies it.- Parameters:
array
- the array to copy- See Also:
-
DoublePointer
For direct buffers, callsPointer(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:
-
DoublePointer
public DoublePointer(long size) Allocates a nativedouble
array of the given size.- Parameters:
size
- the number ofdouble
elements to allocate
-
DoublePointer
public DoublePointer()- See Also:
-
DoublePointer
- See Also:
-
-
Method Details
-
allocateArray
private void allocateArray(long size) -
position
Description copied from class:Pointer
Sets the position and returns this. That makes thearray.position(i)
statement sort of equivalent to thearray[i]
statement in C++. -
limit
Description copied from class:Pointer
Sets the limit and returns this. Used to limit the size of an operation on this object. -
capacity
Description copied from class:Pointer
Sets the capacity and returns this. Should not be called more than once after allocation. -
sizeof
public int sizeof()Description copied from class:Pointer
Returns 1 for Pointer or BytePointer elseLoader.sizeof(getClass())
or -1 on error. -
getPointer
Description copied from class:Pointer
ReturnsgetPointer(getClass(), i)
.- Overrides:
getPointer
in classPointer
-
get
public double get()- Returns:
get(0)
-
get
public double get(long i) - Returns:
- the i-th
double
value of a native array
-
put
- Returns:
put(0, d)
-
put
Copies thedouble
value to the i-th element of a native array.- Parameters:
i
- the index into the arrayd
- thedouble
value to copy- Returns:
- this
-
get
- Returns:
get(array, 0, array.length)
-
put
- Returns:
put(array, 0, array.length)
-
get
Reads a portion of the native array into a Java array.- Parameters:
array
- the array to write tooffset
- the offset into the array where to start writinglength
- the length of data to read and write- Returns:
- this
-
put
Writes a portion of a Java array into the native array.- Parameters:
array
- the array to read fromoffset
- the offset into the array where to start readinglength
- the length of data to read and write- Returns:
- this
-
asBuffer
Description copied from class:Pointer
Same asPointer.asByteBuffer()
, but can be overridden to return subclasses of Buffer.
-