| Methods Summary |
|---|
| java.lang.Object | _array()
if (hasArray()) {
return array();
}
return null;
|
| int | _arrayOffset()
if (hasArray()) {
return arrayOffset();
}
return 0;
|
| public static java.nio.DoubleBuffer | allocate(int capacity)Creates a double buffer based on a newly allocated double array.
if (capacity < 0) {
throw new IllegalArgumentException();
}
return BufferFactory.newDoubleBuffer(capacity);
|
| public final double[] | array()Returns the double array which this buffer is based on, if there is one.
return protectedArray();
|
| public final int | arrayOffset()Returns the offset of the double array which this buffer is based on, if
there is one.
The offset is the index of the array corresponding to the zero position
of the buffer.
return protectedArrayOffset();
|
| public abstract java.nio.DoubleBuffer | asReadOnlyBuffer()Returns a read-only buffer that shares its content with this buffer.
The returned buffer is guaranteed to be a new instance, even if this
buffer is read-only itself. The new buffer's position, limit, capacity
and mark are the same as this buffer's.
The new buffer shares its content with this buffer, which means that this
buffer's change of content will be visible to the new buffer. The two
buffer's position, limit and mark are independent.
|
| public abstract java.nio.DoubleBuffer | compact()Compacts this double buffer.
The remaining doubles will be moved to the head of the buffer, staring
from position zero. Then the position is set to {@code remaining()}; the
limit is set to capacity; the mark is cleared.
|
| public int | compareTo(java.nio.DoubleBuffer otherBuffer)Compare the remaining doubles of this buffer to another double buffer's
remaining doubles.
int compareRemaining = (remaining() < otherBuffer.remaining()) ? remaining()
: otherBuffer.remaining();
int thisPos = position;
int otherPos = otherBuffer.position;
// BEGIN android-changed
double thisDouble, otherDouble;
while (compareRemaining > 0) {
thisDouble = get(thisPos);
otherDouble = otherBuffer.get(otherPos);
// checks for double and NaN inequality
if ((thisDouble != otherDouble)
&& ((thisDouble == thisDouble) || (otherDouble == otherDouble))) {
return thisDouble < otherDouble ? -1 : 1;
}
thisPos++;
otherPos++;
compareRemaining--;
}
// END android-changed
return remaining() - otherBuffer.remaining();
|
| public abstract java.nio.DoubleBuffer | duplicate()Returns a duplicated buffer that shares its content with this buffer.
The duplicated buffer's position, limit, capacity and mark are the same
as this buffer's. The duplicated buffer's read-only property and byte
order are the same as this buffer's, too.
The new buffer shares its content with this buffer, which means either
buffer's change of content will be visible to the other. The two buffer's
position, limit and mark are independent.
|
| public boolean | equals(java.lang.Object other)Checks whether this double buffer is equal to another object.
If {@code other} is not a double buffer then {@code false} is returned.
Two double buffers are equal if and only if their remaining doubles are
exactly the same. Position, limit, capacity and mark are not considered.
if (!(other instanceof DoubleBuffer)) {
return false;
}
DoubleBuffer otherBuffer = (DoubleBuffer) other;
if (remaining() != otherBuffer.remaining()) {
return false;
}
int myPosition = position;
int otherPosition = otherBuffer.position;
boolean equalSoFar = true;
while (equalSoFar && (myPosition < limit)) {
equalSoFar = get(myPosition++) == otherBuffer.get(otherPosition++);
}
return equalSoFar;
|
| public abstract double | get()Returns the double at the current position and increases the position by
1.
|
| public java.nio.DoubleBuffer | get(double[] dest)Reads doubles from the current position into the specified double array
and increases the position by the number of doubles read.
Calling this method has the same effect as
{@code get(dest, 0, dest.length)}.
return get(dest, 0, dest.length);
|
| public java.nio.DoubleBuffer | get(double[] dest, int off, int len)Reads doubles from the current position into the specified double array,
starting from the specified offset, and increases the position by the
number of doubles read.
int length = dest.length;
if (off < 0 || len < 0 || (long)off + (long)len > length) {
throw new IndexOutOfBoundsException();
}
if (len > remaining()) {
throw new BufferUnderflowException();
}
for (int i = off; i < off + len; i++) {
dest[i] = get();
}
return this;
|
| public abstract double | get(int index)Returns a double at the specified index; the position is not changed.
|
| public final boolean | hasArray()Indicates whether this buffer is based on a double array and is
read/write.
return protectedHasArray();
|
| public int | hashCode()Calculates this buffer's hash code from the remaining chars. The
position, limit, capacity and mark don't affect the hash code.
int myPosition = position;
int hash = 0;
long l;
while (myPosition < limit) {
l = Double.doubleToLongBits(get(myPosition++));
hash = hash + ((int) l) ^ ((int) (l >> 32));
}
return hash;
|
| public abstract boolean | isDirect()Indicates whether this buffer is direct. A direct buffer will try its
best to take advantage of native memory APIs and it may not stay in the
Java heap, so it is not affected by garbage collection.
A double buffer is direct if it is based on a byte buffer and the byte
buffer is direct.
|
| public abstract java.nio.ByteOrder | order()Returns the byte order used by this buffer when converting doubles
from/to bytes.
If this buffer is not based on a byte buffer, then this always returns
the platform's native byte order.
|
| abstract double[] | protectedArray()Child class implements this method to realize {@code array()}.
|
| abstract int | protectedArrayOffset()Child class implements this method to realize {@code arrayOffset()}.
|
| abstract boolean | protectedHasArray()Child class implements this method to realize {@code hasArray()}.
|
| public abstract java.nio.DoubleBuffer | put(double d)Writes the given double to the current position and increases the
position by 1.
|
| public final java.nio.DoubleBuffer | put(double[] src)Writes doubles from the given double array to the current position and
increases the position by the number of doubles written.
Calling this method has the same effect as
{@code put(src, 0, src.length)}.
return put(src, 0, src.length);
|
| public java.nio.DoubleBuffer | put(double[] src, int off, int len)Writes doubles from the given double array, starting from the specified
offset, to the current position and increases the position by the number
of doubles written.
int length = src.length;
if (off < 0 || len < 0 || (long)off + (long)len > length) {
throw new IndexOutOfBoundsException();
}
if (len > remaining()) {
throw new BufferOverflowException();
}
for (int i = off; i < off + len; i++) {
put(src[i]);
}
return this;
|
| public java.nio.DoubleBuffer | put(java.nio.DoubleBuffer src)Writes all the remaining doubles of the {@code src} double buffer to this
buffer's current position, and increases both buffers' position by the
number of doubles copied.
if (src == this) {
throw new IllegalArgumentException();
}
if (src.remaining() > remaining()) {
throw new BufferOverflowException();
}
double[] doubles = new double[src.remaining()];
src.get(doubles);
put(doubles);
return this;
|
| public abstract java.nio.DoubleBuffer | put(int index, double d)Write a double to the specified index of this buffer and the position is
not changed.
|
| public abstract java.nio.DoubleBuffer | slice()Returns a sliced buffer that shares its content with this buffer.
The sliced buffer's capacity will be this buffer's {@code remaining()},
and its zero position will correspond to this buffer's current position.
The new buffer's position will be 0, limit will be its capacity, and its
mark is cleared. The new buffer's read-only property and byte order are
the same as this buffer's.
The new buffer shares its content with this buffer, which means either
buffer's change of content will be visible to the other. The two buffer's
position, limit and mark are independent.
|
| public java.lang.String | toString()Returns a string representing the state of this double buffer.
StringBuffer buf = new StringBuffer();
buf.append(getClass().getName());
buf.append(", status: capacity="); //$NON-NLS-1$
buf.append(capacity());
buf.append(" position="); //$NON-NLS-1$
buf.append(position());
buf.append(" limit="); //$NON-NLS-1$
buf.append(limit());
return buf.toString();
|
| public static java.nio.DoubleBuffer | wrap(double[] array)Creates a new double buffer by wrapping the given double array.
Calling this method has the same effect as
{@code wrap(array, 0, array.length)}.
return wrap(array, 0, array.length);
|
| public static java.nio.DoubleBuffer | wrap(double[] array, int start, int len)Creates a new double buffer by wrapping the given double array.
The new buffer's position will be {@code start}, limit will be
{@code start + len}, capacity will be the length of the array.
int length = array.length;
if (start < 0 || len < 0 || (long)start + (long)len > length) {
throw new IndexOutOfBoundsException();
}
DoubleBuffer buf = BufferFactory.newDoubleBuffer(array);
buf.position = start;
buf.limit = start + len;
return buf;
|
