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Diffstat (limited to 'libjava/java/nio/DoubleBuffer.java')
-rw-r--r-- | libjava/java/nio/DoubleBuffer.java | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/libjava/java/nio/DoubleBuffer.java b/libjava/java/nio/DoubleBuffer.java new file mode 100644 index 0000000..7059b6e --- /dev/null +++ b/libjava/java/nio/DoubleBuffer.java @@ -0,0 +1,225 @@ +/* DoubleBuffer.java -- + Copyright (C) 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.nio; + +import gnu.java.nio.DoubleBufferImpl; + +public abstract class DoubleBuffer extends Buffer +{ + private ByteOrder endian = ByteOrder.BIG_ENDIAN; + protected double [] backing_buffer; + + public static DoubleBuffer allocateDirect(int capacity) + { + return new DoubleBufferImpl(capacity, 0, capacity); + } + + public static DoubleBuffer allocate(int capacity) + { + return new DoubleBufferImpl(capacity, 0, capacity); + } + + final public static DoubleBuffer wrap (double[] array, int offset, int length) + { + return new DoubleBufferImpl(array, offset, length); + } + + final public static DoubleBuffer wrap(String a) + { + int len = a.length(); + double[] buffer = new double[len]; + + for (int i=0;i<len;i++) + { + buffer[i] = (double) a.charAt(i); + } + + return wrap(buffer, 0, len); + } + + final public static DoubleBuffer wrap(double[] array) + { + return wrap(array, 0, array.length); + } + + final public DoubleBuffer get (double[] dst, int offset, int length) + { + for (int i = offset; i < offset + length; i++) + { + dst[i] = get(); + } + + return this; + } + + final public DoubleBuffer get(double[] dst) + { + return get(dst, 0, dst.length); + } + + final public DoubleBuffer put(DoubleBuffer src) + { + while (src.hasRemaining()) + put(src.get()); + + return this; + } + + final public DoubleBuffer put (double[] src, int offset, int length) + { + for (int i = offset; i < offset + length; i++) + put(src[i]); + + return this; + } + + public final DoubleBuffer put(double[] src) + { + return put(src, 0, src.length); + } + + public final boolean hasArray() + { + return (backing_buffer != null); + } + + public final double[] array() + { + return backing_buffer; + } + + public final int arrayOffset() + { + return 0; + } + + public int hashCode() + { + return super.hashCode(); + } + + public boolean equals(Object obj) + { + if (obj instanceof DoubleBuffer) + { + return compareTo(obj) == 0; + } + + return false; + } + + public int compareTo(Object ob) + { + DoubleBuffer a = (DoubleBuffer) ob; + + if (a.remaining() != remaining()) + return 1; + + if (! hasArray() || + ! a.hasArray()) + { + return 1; + } + + int r = remaining(); + int i1 = position (); + int i2 = a.position (); + + for (int i=0;i<r;i++) + { + int t = (int) (get(i1)- a.get(i2)); + if (t != 0) + { + return (int) t; + } + } + + return 0; + } + + public final ByteOrder order() + { + return endian; + } + + public final DoubleBuffer order(ByteOrder bo) + { + endian = bo; + return this; + } + + public abstract double get(); + public abstract DoubleBuffer put (double b); + public abstract double get(int index); + public abstract DoubleBuffer put(int index, double b); + public abstract DoubleBuffer compact(); + public abstract boolean isDirect(); + public abstract DoubleBuffer slice(); + public abstract DoubleBuffer duplicate(); + public abstract DoubleBuffer asReadOnlyBuffer(); + public abstract ShortBuffer asShortBuffer(); + public abstract CharBuffer asCharBuffer(); + public abstract IntBuffer asIntBuffer(); + public abstract LongBuffer asLongBuffer(); + public abstract FloatBuffer asFloatBuffer(); + public abstract DoubleBuffer asDoubleBuffer(); + public abstract char getChar(); + public abstract DoubleBuffer putChar(char value); + public abstract char getChar(int index); + public abstract DoubleBuffer putChar(int index, char value); + public abstract short getShort(); + public abstract DoubleBuffer putShort(short value); + public abstract short getShort(int index); + public abstract DoubleBuffer putShort(int index, short value); + public abstract int getInt(); + public abstract DoubleBuffer putInt(int value); + public abstract int getInt(int index); + public abstract DoubleBuffer putInt(int index, int value); + public abstract long getLong(); + public abstract DoubleBuffer putLong(long value); + public abstract long getLong(int index); + public abstract DoubleBuffer putLong(int index, long value); + public abstract float getFloat(); + public abstract DoubleBuffer putFloat(float value); + public abstract float getFloat(int index); + public abstract DoubleBuffer putFloat(int index, float value); + public abstract double getDouble(); + public abstract DoubleBuffer putDouble(double value); + public abstract double getDouble(int index); + public abstract DoubleBuffer putDouble(int index, double value); +} |