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/**
* 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.nio;
import java.io.IOException;
import org.junit.Assert;
import org.junit.Test;
import com.jogamp.junit.util.TestTracer;
public class TestBuffersFloatDoubleConversion extends TestTracer {
public static boolean cmpFloatArray(float[] d1, int d1_offset, float[] d2, int d2_offset, int len) {
if( d1.length - d1_offset < len) {
throw new RuntimeException("d1 too small len "+len+" > "+d1.length+" - "+d1_offset);
}
if( d2.length - d2_offset < len) {
throw new RuntimeException("d2 too small len "+len+" > "+d2.length+" - "+d2_offset);
}
boolean ok = true;
for(int i=0; ok && i<len; i++) {
ok = d1[d1_offset+i] == d2[d2_offset+i] ;
}
return ok;
}
public static boolean cmpDoubleArray(double[] d1, int d1_offset, double[] d2, int d2_offset, int len) {
if( d1.length - d1_offset < len) {
throw new RuntimeException("d1 too small len "+len+" > "+d1.length+" - "+d1_offset);
}
if( d2.length - d2_offset < len) {
throw new RuntimeException("d2 too small len "+len+" > "+d2.length+" - "+d2_offset);
}
boolean ok = true;
for(int i=0; ok && i<len; i++) {
ok = d1[d1_offset+i] == d2[d2_offset+i] ;
}
return ok;
}
public static void incrFloatArray(float[] data, int offset, int len) {
if( data.length - offset < len) {
throw new RuntimeException("data too small len "+len+" > "+data.length+" - "+offset);
}
for(int i=0; i<len; i++) {
data[offset+i] += 1;
}
}
public static void incrDoubleArray(double[] data, int offset, int len) {
if( data.length - offset < len) {
throw new RuntimeException("data too small len "+len+" > "+data.length+" - "+offset);
}
for(int i=0; i<len; i++) {
data[offset+i] += 1;
}
}
public static void setFloatArray(float[] data, int offset, int len) {
if( data.length - offset < len) {
throw new RuntimeException("data too small len "+len+" > "+data.length+" - "+offset);
}
for(int i=0; i<len; i++) {
data[offset+i] = i;
}
}
public static void setDoubleArray(double[] data, int offset, int len) {
if( data.length - offset < len) {
throw new RuntimeException("data too small len "+len+" > "+data.length+" - "+offset);
}
for(int i=0; i<len; i++) {
data[offset+i] = i;
}
}
public static void doItDoubleArray01(double[] data, int offset, int len) {
float[] f_data = Buffers.getFloatArray(data, offset, null, 0, len);
incrFloatArray(f_data, 0, len);
Buffers.getDoubleArray(f_data, 0, data, offset, len);
}
@Test
public void testDoubleArray2FloatArrayAndBack01() {
final int offset = 50;
final int len = 20;
// reference 1
float[] fa_ref = new float[100];
setFloatArray(fa_ref, offset, len);
incrFloatArray(fa_ref, offset, len);
// reference 2
double[] da_ref = new double[100];
setDoubleArray(da_ref, offset, len);
incrDoubleArray(da_ref, offset, len);
// test 1: forth and back .. double -> float -> double
{
double[] da1 = new double[100];
setDoubleArray(da1, offset, len);
incrDoubleArray(da1, offset, len);
// conv_forth: double[offset..len] -> float[0..len]
float[] f_da1 = Buffers.getFloatArray(da1, offset, null, 0, len);
Assert.assertTrue(cmpFloatArray(fa_ref, offset, f_da1, 0, len));
// conv_back: float[0..len] -> double[offset..len]
Buffers.getDoubleArray(f_da1, 0, da1, offset, len);
Assert.assertTrue(cmpDoubleArray(da_ref, offset, da1, offset, len));
}
// test 2: forth, incr, back .. double -> float -> incr -> double
{
double[] da1 = new double[100];
setDoubleArray(da1, offset, len);
doItDoubleArray01(da1, offset, len);
Assert.assertTrue(cmpDoubleArray(da_ref, offset, da1, offset, len));
}
}
public static void main(String args[]) throws IOException {
String tstname = TestBuffersFloatDoubleConversion.class.getName();
org.junit.runner.JUnitCore.main(tstname);
}
}
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