Add com.jogamp.common.util.PrimitiveStack (FloatStack and IntegerStack), a simple primitive stack implementation.

Currently only FILO put/get operations are implemented using either
primitive arrays as I/O itself or <Type>Buffer.

Unit tests are included..

Note: Only FloatStack is implemented in a manual, where others (IntegerStack)
      is derived (generated) from it. Same goes w/ unit tests.

5 files changed, 551 insertions, 5 deletions

diff --git a/make/build.xml b/make/build.xml
index d4ec1b7..76187a1 100644
--- a/make/build.xml
+++ b/make/build.xml
@@ -602,14 +602,62 @@
     </copy>
   </target>
 
+  <target name="generate-primitive-stacks">
+
+    <!-- IntegerStack -->
+    <antcall target="create-pstack" inheritrefs="true">
+        <param name="pstack.name" value="IntegerStack"/>
+        <param name="pstack.testname" value="TestIntegerStack01"/>
+        <param name="pstack.value" value="int"/>
+        <param name="pstack.value2" value="IntBuffer"/>
+    </antcall>
+
+  </target>
+
+  <target name="create-pstack">
+    <copy file="${src.java}/com/jogamp/common/util/FloatStack.java"
+        tofile="${src.generated.java}/com/jogamp/common/util/${pstack.name}.java" overwrite="true">
+        <filterchain>
+            <replaceregex pattern="FloatStack" replace="${pstack.name}"/>
+            <replaceregex pattern="@see ${pstack.name}" replace="@see FloatStack"/>
+            <replaceregex pattern="/\*value\*/float/\*value\*/" replace="${pstack.value}"/>
+            <replaceregex pattern="/\*value2\*/FloatBuffer/\*value2\*/" replace="${pstack.value2}"/>
+        </filterchain>
+    </copy>
+    <mkdir dir="${gluegen.root}/${rootrel.build}/test/build/gensrc/classes"/>
+    <copy file="${gluegen.root}/src/junit/com/jogamp/common/util/TestFloatStack01.java"
+        tofile="${gluegen.root}/${rootrel.build}/test/build/gensrc/classes/com/jogamp/common/util/${pstack.testname}.java" overwrite="true">
+        <filterchain>
+            <replaceregex pattern="FloatStack" replace="${pstack.name}"/>
+            <replaceregex pattern="TestFloatStack01" replace="${pstack.testname}"/>
+            <replaceregex pattern="@see ${pstack.name}" replace="@see FloatStack"/>
+            <replaceregex pattern="/\*value\*/float/\*value\*/" replace="${pstack.value}"/>
+            <replaceregex pattern="/\*value2\*/FloatBuffer/\*value2\*/" replace="${pstack.value2}"/>
+        </filterchain>
+    </copy>
+  </target>
+
   <target name="gluegen.build.check.java" depends="init">
-      <uptodate property="gluegen.build.skip.java">
+      <uptodate property="gluegen.build.skip.java1">
         <srcfiles dir= "."            includes="*.xml"/>
         <srcfiles dir= "${src.java}"  includes="**"/>
         <srcfiles dir= "${c.grammar}" includes="**/*.g"/>
         <srcfiles dir= "${j.grammar}" includes="**/*.g"/>
         <mapper type="merge" to="${build}/gluegen.jar"/>
       </uptodate>
+      <uptodate property="gluegen.build.skip.java2">
+        <srcfiles dir= "."            includes="*.xml"/>
+        <srcfiles dir= "${src.java}"  includes="**"/>
+        <srcfiles dir= "${c.grammar}" includes="**/*.g"/>
+        <srcfiles dir= "${j.grammar}" includes="**/*.g"/>
+        <mapper type="merge" to="${build}/gluegen-rt.jar"/>
+      </uptodate>
+      <condition property="gluegen.build.skip.java" value="true">
+        <or>
+          <isset property="gluegen.build.skip.java1"/>
+          <isset property="gluegen.build.skip.java2"/>
+        </or>
+      </condition>
   </target>
 
   <target name="gluegen.build.javase">
@@ -803,9 +851,10 @@
   </target>
   
   <target name="gluegen.build.java" depends="gluegen.cpptasks.detect.os,gluegen.build.check.java" unless="gluegen.build.skip.java">
-    <antcall target="generate-hash-maps"    inheritRefs="true"/>
-    <antcall target="gluegen.build.javase"  inheritRefs="true"/>
-    <antcall target="gluegen.build.android" inheritRefs="true"/>
+    <antcall target="generate-hash-maps"        inheritRefs="true"/>
+    <antcall target="generate-primitive-stacks" inheritRefs="true"/>
+    <antcall target="gluegen.build.javase"      inheritRefs="true"/>
+    <antcall target="gluegen.build.android"     inheritRefs="true"/>
   </target>
 
   <target name="gluegen.build.check.android-launcher" depends="init">
diff --git a/make/scripts/runtest.sh b/make/scripts/runtest.sh
index 8cdf352..e7051e4 100755
--- a/make/scripts/runtest.sh
+++ b/make/scripts/runtest.sh
@@ -70,13 +70,15 @@ function onetest() {
 #onetest com.jogamp.common.GlueGenVersion 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.TestSystemPropsAndEnvs 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.TestVersionInfo 2>&1 | tee -a $LOG
-onetest com.jogamp.common.util.TestVersionNumber 2>&1 | tee -a $LOG
+#onetest com.jogamp.common.util.TestVersionNumber 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.TestIteratorIndexCORE 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.locks.TestRecursiveLock01 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.locks.TestRecursiveThreadGroupLock01 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.locks.TestSingletonServerSocket00 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.locks.TestSingletonServerSocket01 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.locks.TestSingletonServerSocket02 2>&1 | tee -a $LOG
+onetest com.jogamp.common.util.TestFloatStack01 2>&1 | tee -a $LOG
+onetest com.jogamp.common.util.TestIntegerStack01 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.TestArrayHashSet01 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.IntIntHashMapTest 2>&1 | tee -a $LOG
 #onetest com.jogamp.common.util.IntObjectHashMapTest 2>&1 | tee -a $LOG
diff --git a/src/java/com/jogamp/common/util/FloatStack.java b/src/java/com/jogamp/common/util/FloatStack.java
new file mode 100644
index 0000000..e5790a9
--- /dev/null
+++ b/src/java/com/jogamp/common/util/FloatStack.java
@@ -0,0 +1,157 @@
+/**
+ * Copyright 2012 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.common.util;
+
+import java.nio.BufferOverflowException;
+import java.nio.BufferUnderflowException;
+import java.nio./*value2*/FloatBuffer/*value2*/;
+
+/**
+ * Simple primitive-type stack.
+ * <p>
+ * Implemented operations:
+ * <ul>
+ *  <li>FILO - First In, Last Out</li>
+ * </ul>
+ * </p>
+ */
+public class /*name*/FloatStack/*name*/ implements PrimitiveStack {
+    private int position;
+    private /*value*/float/*value*/[] buffer;
+    private int growSize;
+    
+    /**
+     * @param initialSize initial size, must be &gt; zero
+     * @param growSize grow size if {@link #position()} is reached, maybe <code>0</code>
+     *        in which case an {@link IndexOutOfBoundsException} is thrown. 
+     */
+    public /*name*/FloatStack/*name*/(int initialSize, int growSize) {
+        this.position = 0;
+        this.growSize = growSize;
+        this.buffer = new /*value*/float/*value*/[initialSize];
+    }
+    
+    @Override
+    public final int capacity() { return buffer.length; }
+    
+    @Override
+    public final int position() { return position; }
+    
+    @Override
+    public final int remaining() { return buffer.length - position; }
+    
+    @Override
+    public final int getGrowSize() { return growSize; }
+    
+    @Override
+    public final void setGrowSize(int newGrowSize) { growSize = newGrowSize; }
+    
+    public final String toString() {
+        return "FloatStack[0..(top "+position+").."+buffer.length+", remaining "+remaining()+"]";
+    }
+    
+    public final /*value*/float/*value*/[] buffer() { return buffer; }
+    
+    private final void growIfNecessary(int length) throws IndexOutOfBoundsException {
+        if( position + length > buffer.length ) {
+            if( 0 >= growSize ) {
+                throw new IndexOutOfBoundsException("Out of fixed stack size: "+this);
+            }
+            /*value*/float/*value*/[] newBuffer = 
+                    new /*value*/float/*value*/[buffer.length + growSize];
+            System.arraycopy(buffer, 0, newBuffer, 0, position);
+            buffer = newBuffer;
+        }        
+    }
+
+    /**
+     * FILO put operation
+     * 
+     * @param src source buffer
+     * @param srcOffset offset of src 
+     * @param length number of float elements to put from <code>src</code> on-top this stack 
+     * @return the src float[]
+     * @throws IndexOutOfBoundsException if stack cannot grow due to zero grow-size or offset+length exceeds src.
+     */
+    public final /*value*/float/*value*/[] 
+                    putOnTop(/*value*/float/*value*/[] src, int srcOffset, int length) throws IndexOutOfBoundsException {
+        growIfNecessary(length);
+        System.arraycopy(src, srcOffset, buffer, position, length);
+        position += length;
+        return src;
+    }
+
+    /**
+     * FILO put operation
+     * 
+     * @param src source buffer, it's position is incremented by <code>length</code>
+     * @param length number of float elements to put from <code>src</code> on-top this stack 
+     * @return the src FloatBuffer
+     * @throws IndexOutOfBoundsException if stack cannot grow due to zero grow-size
+     * @throws BufferUnderflowException if <code>src</code> FloatBuffer has less remaining elements than <code>length</code>.
+     */
+    public final /*value2*/FloatBuffer/*value2*/ 
+                        putOnTop(/*value2*/FloatBuffer/*value2*/ src, int length) throws IndexOutOfBoundsException, BufferUnderflowException  {
+        growIfNecessary(length);        
+        src.get(buffer, position, length);
+        position += length;
+        return src;
+    }
+    
+    /**
+     * FILO get operation
+     * 
+     * @param dest destination buffer
+     * @param destOffset offset of dest 
+     * @param length number of float elements to get from-top this stack to <code>dest</code>. 
+     * @return the dest float[]
+     * @throws IndexOutOfBoundsException if stack or <code>dest</code> has less elements than <code>length</code>.
+     */
+    public final /*value*/float/*value*/[] 
+                        getFromTop(/*value*/float/*value*/[] dest, int destOffset, int length) throws IndexOutOfBoundsException {
+        System.arraycopy(buffer, position-length, dest, destOffset, length);
+        position -= length;
+        return dest;
+    }
+    
+    /**
+     * FILO get operation
+     * 
+     * @param dest destination buffer, it's position is incremented by <code>length</code>.
+     * @param length number of float elements to get from-top this stack to <code>dest</code>.
+     * @return the dest FloatBuffer
+     * @throws IndexOutOfBoundsException if stack has less elements than length
+     * @throws BufferOverflowException if <code>src</code> FloatBuffer has less remaining elements than <code>length</code>.
+     */
+    public final /*value2*/FloatBuffer/*value2*/ 
+                        getFromTop(/*value2*/FloatBuffer/*value2*/ dest, int length) throws IndexOutOfBoundsException, BufferOverflowException  {
+        dest.put(buffer, position-length, length);
+        position -= length;
+        return dest;
+    }
+}
diff --git a/src/java/com/jogamp/common/util/PrimitiveStack.java b/src/java/com/jogamp/common/util/PrimitiveStack.java
new file mode 100644
index 0000000..23447e3
--- /dev/null
+++ b/src/java/com/jogamp/common/util/PrimitiveStack.java
@@ -0,0 +1,72 @@
+/**
+ * Copyright 2012 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.common.util;
+
+/**
+ * Simple primitive-type stack.
+ */
+public interface PrimitiveStack {
+    
+    /** 
+     * Returns this stack's current capacity.
+     * <p>
+     * The capacity may grow with a put operation w/ insufficient {@link #remaining()} elements left, if {@link #getGrowSize()} &gt; 0.
+     * </p> 
+     */
+    int capacity();
+    
+    /** 
+     * Returns the current position where the next put operation will store the next element.
+     * <p>
+     * The position equals to the number of elements already stored.
+     * </p>
+     * <p> 
+     * 0 denotes an empty stack.
+     * </p>
+     **/
+    int position();
+    
+    /** 
+     * Returns the remaining elements left before stack will grow about {@link #getGrowSize()}.
+     * <pre>
+     *   remaining := capacity() - position();
+     * </pre>
+     * <p> 
+     * 0 denotes a full stack.
+     * </p> 
+     * @see #capacity()
+     * @see #position()
+     **/
+    int remaining();
+    
+    /** Returns the grow size. A stack grows by this size in case a put operation exceeds it's {@link #capacity()}. */
+    int getGrowSize();
+
+    /** Set new {@link #growSize(). */
+    void setGrowSize(int newGrowSize);
+}
diff --git a/src/junit/com/jogamp/common/util/TestFloatStack01.java b/src/junit/com/jogamp/common/util/TestFloatStack01.java
new file mode 100644
index 0000000..0a2b077
--- /dev/null
+++ b/src/junit/com/jogamp/common/util/TestFloatStack01.java
@@ -0,0 +1,266 @@
+/**
+ * Copyright 2010 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+ 
+package com.jogamp.common.util;
+
+import java.io.IOException;
+import java.nio./*value2*/FloatBuffer/*value2*/;
+import java.util.Arrays;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.jogamp.junit.util.JunitTracer;
+
+public class /*testname*/TestFloatStack01/*testname*/ extends JunitTracer {
+
+    static final boolean equals(/*value*/float/*value*/[] b, int bOffset, 
+                                /*value*/float/*value*/[] stack, int stackOffset, int length) {
+        for(int i=0; i<length; i++) {
+            if( b[bOffset+i] != stack[stackOffset+i]) {
+                return false;
+            }
+        }
+        return true;
+    }
+    
+    
+    @Test
+    public void test01PrimitiveArray() {
+        final int compNum  = 3; 
+        /*value*/float/*value*/[] e0 = 
+                new /*value*/float/*value*/[] { 0, 1, 2 };
+        /*value*/float/*value*/[] e1 = 
+                new /*value*/float/*value*/[] { 3, 4, 5 };
+        
+        final int initialSizeElem = 32;
+        final int growSizeElem = 2;
+        final int totalSizeElem = initialSizeElem+2*growSizeElem;
+        
+        final int initialSizeComp = initialSizeElem*compNum;
+        final int growSizeComp = growSizeElem*compNum;
+        final int totalSizeComp = totalSizeElem*compNum;
+        
+        final /*name*/FloatStack/*name*/ fs0 = 
+                new /*name*/FloatStack/*name*/(initialSizeComp, growSizeComp);
+        
+        //
+        // PUT
+        //
+        
+        for(int i=0; i<totalSizeElem; i++) {
+            if(i < initialSizeElem) {
+                Assert.assertTrue("Error "+fs0, fs0.remaining() == (initialSizeElem-i)*compNum);
+            } else {
+                int j = ( i - initialSizeElem ) % growSizeElem ;
+                Assert.assertTrue("Error "+fs0, fs0.remaining() == j*compNum);
+            }            
+            Assert.assertTrue("Error "+fs0, fs0.position() == i*compNum);
+            
+            // String s;
+            if( 0 == i % 2) {
+                // s = Arrays.toString(e0);
+                fs0.putOnTop(e0, 0, compNum);
+            } else {
+                // s = Arrays.toString(e1);
+                fs0.putOnTop(e1, 0, compNum);
+            }
+            // System.err.println("#"+i+"/"+totalSizeElem+": "+fs0+" <- "+s);
+        }
+        // System.err.println("X: "+fs0);
+        Assert.assertTrue("Error "+fs0, fs0.remaining() == 0);
+        Assert.assertTrue("Error "+fs0, fs0.position() == totalSizeComp);
+        
+        fs0.setGrowSize(0);
+        {
+            Exception expectedException = null;
+            try {
+                fs0.putOnTop(e1, 0, compNum);
+            } catch (Exception e) {
+                expectedException = e;
+            }
+            if(null == expectedException || !(expectedException instanceof IndexOutOfBoundsException) ) {
+                Assert.assertTrue("Error "+fs0+", exception "+expectedException, false);
+            }
+        }
+        
+        //
+        // GET
+        //
+        
+        for(int i=0; i<totalSizeElem; i++) {
+            Assert.assertTrue("Error "+fs0, fs0.remaining() == i*compNum);
+            Assert.assertTrue("Error "+fs0, fs0.position() == (totalSizeElem-i)*compNum);
+            
+            final /*value*/float/*value*/[] buf = 
+                        new /*value*/float/*value*/[compNum];
+            fs0.getFromTop(buf, 0, compNum);
+            if( 0 == i % 2) {
+                Assert.assertTrue("Error "+fs0+", #"+i+": "+Arrays.toString(e1)+" != "+Arrays.toString(buf), Arrays.equals(e1, buf));                
+            } else {
+                Assert.assertTrue("Error "+fs0+", #"+i+": "+Arrays.toString(e0)+" != "+Arrays.toString(buf), Arrays.equals(e0, buf));
+            }
+        }
+        Assert.assertTrue("Error "+fs0, fs0.remaining() == totalSizeComp);
+        Assert.assertTrue("Error "+fs0, fs0.position() == 0);        
+        
+        {
+            final /*value*/float/*value*/[] buf = 
+                                new /*value*/float/*value*/[compNum];
+            Exception expectedException = null;
+            try {
+                fs0.getFromTop(buf, 0, compNum);
+            } catch (Exception e) {
+                expectedException = e;
+            }
+            if(null == expectedException || !(expectedException instanceof IndexOutOfBoundsException) ) {
+                Assert.assertTrue("Error "+fs0+", exception "+expectedException, false);
+            }
+        }
+    }
+
+    @Test
+    public void test02FloatBuffer() {
+        final int compNum  = 3; 
+        /*value2*/FloatBuffer/*value2*/ fb0 = 
+                /*value2*/FloatBuffer/*value2*/.allocate(3*compNum);
+        
+        /*value*/float/*value*/[] e0 = 
+                new /*value*/float/*value*/[] { 0, 1, 2 };
+        /*value*/float/*value*/[] e1 = 
+                new /*value*/float/*value*/[] { 3, 4, 5 };        
+        /*value*/float/*value*/[] e2 = 
+                new /*value*/float/*value*/[] { 6, 7, 8 }; // not put on stack!        
+        fb0.put(e0);
+        fb0.put(e1);
+        fb0.put(e2);
+        fb0.position(0);
+        
+        final int initialSizeElem = 32;
+        final int growSizeElem = 2;
+        final int totalSizeElem = initialSizeElem+2*growSizeElem;
+        
+        final int initialSizeComp = initialSizeElem*compNum;
+        final int growSizeComp = growSizeElem*compNum;
+        final int totalSizeComp = totalSizeElem*compNum;
+        
+        final /*name*/FloatStack/*name*/ fs0 = 
+                new /*name*/FloatStack/*name*/(initialSizeComp, growSizeComp);
+
+        //
+        // PUT
+        //
+        
+        for(int i=0; i<totalSizeElem; i++) {
+            if( 0 == i ) {
+                Assert.assertTrue("Error "+fs0+", "+fb0, fb0.position() == 0);
+            } else if( 0 == i % 2) {
+                Assert.assertTrue("Error "+fs0+", "+fb0, fb0.position() == 2*compNum);
+                fb0.position(0);
+            } else {
+                Assert.assertTrue("Error "+fs0+", "+fb0, fb0.position() == compNum);
+            }
+            if(i < initialSizeElem) {
+                Assert.assertTrue("Error "+fs0, fs0.remaining() == (initialSizeElem-i)*compNum);
+            } else {
+                int j = ( i - initialSizeElem ) % growSizeElem ;
+                Assert.assertTrue("Error "+fs0, fs0.remaining() == j*compNum);
+            }            
+            Assert.assertTrue("Error "+fs0, fs0.position() == i*compNum);
+            
+            final int fb0Pos0 = fb0.position();
+            fs0.putOnTop(fb0, compNum);
+            Assert.assertTrue("Error "+fs0+", "+fb0, fb0.position() == fb0Pos0 + compNum);
+        }        
+        Assert.assertTrue("Error "+fs0, fs0.remaining() == 0);
+        Assert.assertTrue("Error "+fs0, fs0.position() == totalSizeComp);
+
+        fs0.setGrowSize(0);
+        {
+            fb0.position(0);
+            Exception expectedException = null;
+            try {
+                fs0.putOnTop(fb0, compNum);
+            } catch (Exception e) {
+                expectedException = e;
+            }
+            if(null == expectedException || !(expectedException instanceof IndexOutOfBoundsException) ) {
+                Assert.assertTrue("Error "+fs0+", exception "+expectedException, false);
+            }        
+            fb0.position(0);
+        }
+        
+        //
+        // GET
+        //
+        
+        for(int i=0; i<totalSizeElem; i++) {
+            Assert.assertTrue("Error "+fs0, fs0.remaining() == i*compNum);
+            Assert.assertTrue("Error "+fs0, fs0.position() == (totalSizeElem-i)*compNum);
+            
+            final /*value*/float/*value*/[] backing = 
+                    new /*value*/float/*value*/[compNum];
+            /*value2*/FloatBuffer/*value2*/ buf = 
+                    /*value2*/FloatBuffer/*value2*/.wrap(backing);
+            
+            fs0.getFromTop(buf, compNum);
+            if( 0 == i % 2) {
+                Assert.assertTrue("Error "+fs0+", #"+i+": "+Arrays.toString(e1)+" != "+Arrays.toString(backing), Arrays.equals(e1, backing));                
+            } else {
+                Assert.assertTrue("Error "+fs0+", #"+i+": "+Arrays.toString(e0)+" != "+Arrays.toString(backing), Arrays.equals(e0, backing));
+            }
+            Assert.assertTrue("Error "+fs0+", "+buf, buf.position() == compNum);
+            buf.position(0);
+        }
+        Assert.assertTrue("Error "+fs0, fs0.remaining() == totalSizeComp);
+        Assert.assertTrue("Error "+fs0, fs0.position() == 0);        
+        
+        {
+            final /*value*/float/*value*/[] backing = 
+                    new /*value*/float/*value*/[compNum];
+            /*value2*/FloatBuffer/*value2*/ buf 
+                    = /*value2*/FloatBuffer/*value2*/.wrap(backing);
+            Exception expectedException = null;
+            try {
+                fs0.getFromTop(buf, compNum);
+            } catch (Exception e) {
+                expectedException = e;
+            }
+            if(null == expectedException || !(expectedException instanceof IndexOutOfBoundsException) ) {
+                Assert.assertTrue("Error "+fs0+", exception "+expectedException, false);
+            }
+        }
+        
+    }
+    
+    public static void main(String args[]) throws IOException {
+        String tstname = /*testname*/TestFloatStack01/*testname*/.class.getName();
+        org.junit.runner.JUnitCore.main(tstname);
+    }
+
+}