java.nio.Buffer
java.nio.DoubleBuffer
java.nio.HeapDoubleBuffer
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
java.lang.Object
A read/write HeapDoubleBuffer.
| Field Summary |
| Fields inherited from class java.nio.DoubleBuffer |
hb, isReadOnly, offset |
| Fields inherited from class java.nio.Buffer |
address |
| Constructor Summary | |
(package private) |
HeapDoubleBuffer(double[] buf,
int off,
int len)
|
protected |
HeapDoubleBuffer(double[] buf,
int mark,
int pos,
int lim,
int cap,
int off)
|
(package private) |
HeapDoubleBuffer(int cap,
int lim)
|
| Method Summary | |
DoubleBuffer |
asReadOnlyBuffer()
Creates a new, read-only double buffer that shares this buffer's content. |
DoubleBuffer |
compact()
Compacts this buffer (optional operation). |
DoubleBuffer |
duplicate()
Creates a new double buffer that shares this buffer's content. |
double |
get()
Relative get method. |
DoubleBuffer |
get(double[] dst,
int offset,
int length)
Relative bulk get method. |
double |
get(int i)
Absolute get method. |
boolean |
isDirect()
Tells whether or not this double buffer is direct. |
boolean |
isReadOnly()
Tells whether or not this buffer is read-only. |
protected int |
ix(int i)
|
ByteOrder |
order()
Retrieves this buffer's byte order. |
DoubleBuffer |
put(double x)
Relative put method (optional operation). |
DoubleBuffer |
put(double[] src,
int offset,
int length)
Relative bulk put method (optional operation). |
DoubleBuffer |
put(DoubleBuffer src)
Relative bulk put method (optional operation). |
DoubleBuffer |
put(int i,
double x)
Absolute put method (optional operation). |
DoubleBuffer |
slice()
Creates a new double buffer whose content is a shared subsequence of this buffer's content. |
| Methods inherited from class java.nio.DoubleBuffer |
allocate, array, arrayOffset, compareTo, equals, get, hasArray, hashCode, put, toString, wrap, wrap |
| Methods inherited from class java.nio.Buffer |
capacity, checkBounds, checkIndex, checkIndex, clear, flip, hasRemaining, limit, limit, mark, markValue, nextGetIndex, nextGetIndex, nextPutIndex, nextPutIndex, position, position, remaining, reset, rewind |
| Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
HeapDoubleBuffer(int cap,
int lim)
HeapDoubleBuffer(double[] buf,
int off,
int len)
protected HeapDoubleBuffer(double[] buf,
int mark,
int pos,
int lim,
int cap,
int off)
| Method Detail |
public DoubleBuffer slice()
DoubleBufferThe content of the new buffer will start at this buffer's current position. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent.
The new buffer's position will be zero, its capacity and its limit will be the number of doubles remaining in this buffer, and its mark will be undefined. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.
slice in class DoubleBufferpublic DoubleBuffer duplicate()
DoubleBufferThe content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent.
The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.
duplicate in class DoubleBufferpublic DoubleBuffer asReadOnlyBuffer()
DoubleBufferThe content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer; the new buffer itself, however, will be read-only and will not allow the shared content to be modified. The two buffers' position, limit, and mark values will be independent.
The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer.
If this buffer is itself read-only then this method behaves in
exactly the same way as the duplicate method.
asReadOnlyBuffer in class DoubleBufferprotected int ix(int i)
public double get()
DoubleBuffer
get in class DoubleBufferpublic double get(int i)
DoubleBuffer
get in class DoubleBufferi - The index from which the double will be read
public DoubleBuffer get(double[] dst,
int offset,
int length)
DoubleBuffer This method transfers doubles from this buffer into the given
destination array. If there are fewer doubles remaining in the
buffer than are required to satisfy the request, that is, if
length > remaining(), then no
doubles are transferred and a BufferUnderflowException is
thrown.
Otherwise, this method copies length doubles from this buffer into the given array, starting at the current position of this buffer and at the given offset in the array. The position of this buffer is then incremented by length.
In other words, an invocation of this method of the form src.get(dst, off, len) has exactly the same effect as the loop
for (int i = off; i < off + len; i++)
dst[i] = src.get();
except that it first checks that there are sufficient doubles in
this buffer and it is potentially much more efficient.
get in class DoubleBufferdst - The array into which doubles are to be writtenoffset - The offset within the array of the first double to be
written; must be non-negative and no larger than
dst.lengthlength - The maximum number of doubles to be written to the given
array; must be non-negative and no larger than
dst.length - offset
public boolean isDirect()
DoubleBuffer
isDirect in class DoubleBufferpublic boolean isReadOnly()
Buffer
isReadOnly in class Bufferpublic DoubleBuffer put(double x)
DoubleBufferWrites the given double into this buffer at the current position, and then increments the position.
put in class DoubleBufferx - The double to be written
public DoubleBuffer put(int i,
double x)
DoubleBufferWrites the given double into this buffer at the given index.
put in class DoubleBufferi - The index at which the double will be writtenx - The double value to be written
public DoubleBuffer put(double[] src,
int offset,
int length)
DoubleBuffer This method transfers doubles into this buffer from the given
source array. If there are more doubles to be copied from the array
than remain in this buffer, that is, if
length > remaining(), then no
doubles are transferred and a BufferOverflowException is
thrown.
Otherwise, this method copies length doubles from the given array into this buffer, starting at the given offset in the array and at the current position of this buffer. The position of this buffer is then incremented by length.
In other words, an invocation of this method of the form dst.put(src, off, len) has exactly the same effect as the loop
for (int i = off; i < off + len; i++)
dst.put(a[i]);
except that it first checks that there is sufficient space in this
buffer and it is potentially much more efficient.
put in class DoubleBuffersrc - The array from which doubles are to be readoffset - The offset within the array of the first double to be read;
must be non-negative and no larger than array.lengthlength - The number of doubles to be read from the given array;
must be non-negative and no larger than
array.length - offset
public DoubleBuffer put(DoubleBuffer src)
DoubleBuffer This method transfers the doubles remaining in the given source
buffer into this buffer. If there are more doubles remaining in the
source buffer than in this buffer, that is, if
src.remaining() > remaining(),
then no doubles are transferred and a BufferOverflowException is thrown.
Otherwise, this method copies n = src.remaining() doubles from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.
In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop
while (src.hasRemaining())
dst.put(src.get());
except that it first checks that there is sufficient space in this
buffer and it is potentially much more efficient.
put in class DoubleBuffersrc - The source buffer from which doubles are to be read;
must not be this buffer
public DoubleBuffer compact()
DoubleBufferThe doubles between the buffer's current position and its limit, if any, are copied to the beginning of the buffer. That is, the double at index p = position() is copied to index zero, the double at index p + 1 is copied to index one, and so forth until the double at index limit() - 1 is copied to index n = limit() - 1 - p. The buffer's position is then set to n+1 and its limit is set to its capacity. The mark, if defined, is discarded.
The buffer's position is set to the number of doubles copied, rather than to zero, so that an invocation of this method can be followed immediately by an invocation of another relative put method.
compact in class DoubleBufferpublic ByteOrder order()
DoubleBuffer The byte order of a double buffer created by allocation or by
wrapping an existing double array is the native order of the underlying
hardware. The byte order of a double buffer created as a view of a byte buffer is that of the
byte buffer at the moment that the view is created.
order in class DoubleBuffer
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||