/**
* Copyright 2013 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.opengl.test.junit.jogl.math;
import org.junit.Assert;
import org.junit.FixMethodOrder;
import org.junit.Test;
import org.junit.runners.MethodSorters;
import com.jogamp.opengl.math.Binary16;
import com.jogamp.opengl.test.junit.util.MiscUtils;
import com.jogamp.opengl.test.junit.util.UITestCase;
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public final class TestBinary16NOUI extends UITestCase /* due to hardship on machine, we want to run this test exclusively! */
{
static int stepping = 1;
static boolean verbose = false;
/**
* Exponents in the range [-15, 16] are encoded and decoded correctly.
*/
@SuppressWarnings("static-method") @Test public void testExponentIdentity()
{
System.out.println("-- Exponent identities");
for (int e = -15; e <= 16; ++e) {
final char p = Binary16.packSetExponentUnbiasedUnchecked(e);
final int u = Binary16.unpackGetExponentUnbiased(p);
if( verbose ) {
System.out.println("e: " + e +", p: "+Integer.toHexString(p)+", u: "+u);
}
Assert.assertEquals(e, u);
}
}
/**
* Infinities are infinite.
*/
@SuppressWarnings("static-method") @Test public void testInfinite()
{
Assert.assertTrue(Binary16.isInfinite(Binary16.POSITIVE_INFINITY));
Assert.assertTrue(Binary16.isInfinite(Binary16.NEGATIVE_INFINITY));
Assert.assertFalse(Binary16.isInfinite(Binary16.exampleNaN()));
for (int i = 0; i <= 65535; i+=stepping) {
Assert.assertFalse(Binary16.isInfinite(Binary16.packDouble(i)));
}
}
/**
* The unencoded exponent of infinity is 16.
*/
@SuppressWarnings("static-method") @Test public void testInfinityExponent()
{
Assert.assertEquals(
16,
Binary16.unpackGetExponentUnbiased(Binary16.POSITIVE_INFINITY));
}
/**
* The unencoded exponent of infinity is 16.
*/
@SuppressWarnings("static-method") @Test public
void
testInfinityNegativeExponent()
{
Assert.assertEquals(
16,
Binary16.unpackGetExponentUnbiased(Binary16.NEGATIVE_INFINITY));
}
/**
* The sign of negative infinity is 1.
*/
@SuppressWarnings("static-method") @Test public
void
testInfinityNegativeSign()
{
Assert
.assertEquals(1, Binary16.unpackGetSign(Binary16.NEGATIVE_INFINITY));
}
/**
* The significand of infinity is 0.
*/
@SuppressWarnings("static-method") @Test public
void
testInfinityNegativeSignificand()
{
Assert.assertEquals(
0,
Binary16.unpackGetSignificand(Binary16.NEGATIVE_INFINITY));
}
/**
* The sign of positive infinity is 0.
*/
@SuppressWarnings("static-method") @Test public void testInfinitySign()
{
Assert
.assertEquals(0, Binary16.unpackGetSign(Binary16.POSITIVE_INFINITY));
}
/**
* The significand of infinity is 0.
*/
@SuppressWarnings("static-method") @Test public
void
testInfinitySignificand()
{
Assert.assertEquals(
0,
Binary16.unpackGetSignificand(Binary16.POSITIVE_INFINITY));
}
/**
* NaN is NaN.
*/
@SuppressWarnings("static-method") @Test public void testNaN()
{
final int n =
Binary16.packSetExponentUnbiasedUnchecked(16)
| Binary16.packSetSignificandUnchecked(1);
final char c = (char) n;
Assert.assertEquals(16, Binary16.unpackGetExponentUnbiased(c));
Assert.assertEquals(1, Binary16.unpackGetSignificand(c));
Assert.assertEquals(
16,
Binary16.unpackGetExponentUnbiased(Binary16.exampleNaN()));
Assert.assertEquals(
1,
Binary16.unpackGetSignificand(Binary16.exampleNaN()));
Assert.assertTrue(Binary16.isNaN(c));
Assert.assertTrue(Binary16.isNaN(Binary16.exampleNaN()));
}
/**
* Packing NaN results in NaN.
*/
@SuppressWarnings("static-method") @Test public void testPackDoubleNaN()
{
final double k = Double.NaN;
final char r = Binary16.packDouble(k);
Assert.assertTrue(Binary16.isNaN(r));
}
/**
* Packing negative infinity results in negative infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testPackDoubleNegativeInfinity()
{
Assert.assertTrue(Binary16.NEGATIVE_INFINITY == Binary16
.packDouble(Double.NEGATIVE_INFINITY));
}
/**
* Packing negative zero results in negative zero.
*/
@SuppressWarnings("static-method") @Test public
void
testPackDoubleNegativeZero()
{
Assert.assertTrue(Binary16.NEGATIVE_ZERO == Binary16.packDouble(-0.0));
}
/**
* Packing positive infinity results in positive infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testPackDoublePositiveInfinity()
{
Assert.assertTrue(Binary16.POSITIVE_INFINITY == Binary16
.packDouble(Double.POSITIVE_INFINITY));
}
/**
* Packing positive zero results in positive zero.
*/
@SuppressWarnings("static-method") @Test public
void
testPackDoublePositiveZero()
{
Assert.assertTrue(Binary16.POSITIVE_ZERO == Binary16.packDouble(0.0));
}
/**
* Integers in the range [0, 65520] should be representable.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testPackDoubleUnpackFloat()
{
for (int i = 0; i <= 65536; i+=stepping) {
final double in = i;
final char packed = Binary16.packDouble(in);
final float r = Binary16.unpackFloat(packed);
if( verbose ) {
System.out.println(String.format(
"packed: 0x%04x 0b%s in: %f unpacked: %f",
(int) packed,
Binary16.toRawBinaryString(packed),
in,
r));
}
if (i <= 2048) {
Assert.assertEquals(in, r, 0.0);
}
if ((i > 2048) && (i <= 4096)) {
Assert.assertTrue((r % 2) == 0);
}
if ((i > 4096) && (i <= 8192)) {
Assert.assertTrue((r % 4) == 0);
}
if ((i > 8192) && (i <= 16384)) {
Assert.assertTrue((r % 8) == 0);
}
if ((i > 16384) && (i <= 32768)) {
Assert.assertTrue((r % 16) == 0);
}
if ((i > 32768) && (i < 65536)) {
Assert.assertTrue((r % 32) == 0);
}
if (i == 65536) {
Assert.assertTrue(Double.isInfinite(r));
}
}
}
/**
* Integers in the range [0, 65520] should be representable.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testPackFloatDoubleEquivalent()
{
for (int i = 0; i <= 65536; i+=stepping) {
final float f_in = i;
final double d_in = i;
final char pf = Binary16.packFloat(f_in);
final char pd = Binary16.packDouble(d_in);
if( verbose ) {
System.out.println("i: " + i);
System.out.println(String.format(
"pack_f: 0x%04x 0b%s",
(int) pf,
Binary16.toRawBinaryString(pf)));
System.out.println(String.format(
"pack_d: 0x%04x 0b%s",
(int) pd,
Binary16.toRawBinaryString(pd)));
}
Assert.assertEquals(pf, pd);
}
}
/**
* Packing NaN results in NaN.
*/
@SuppressWarnings("static-method") @Test public void testPackFloatNaN()
{
final float k = Float.NaN;
final char r = Binary16.packFloat(k);
Assert.assertTrue(Binary16.isNaN(r));
}
/**
* Packing negative infinity results in negative infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testPackFloatNegativeInfinity()
{
Assert.assertTrue(Binary16.NEGATIVE_INFINITY == Binary16
.packFloat(Float.NEGATIVE_INFINITY));
}
/**
* Packing negative zero results in negative zero.
*/
@SuppressWarnings("static-method") @Test public
void
testPackFloatNegativeZero()
{
Assert.assertTrue(Binary16.NEGATIVE_ZERO == Binary16.packFloat(-0.0f));
}
/**
* Packing positive infinity results in positive infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testPackFloatPositiveInfinity()
{
Assert.assertTrue(Binary16.POSITIVE_INFINITY == Binary16
.packFloat(Float.POSITIVE_INFINITY));
}
/**
* Packing positive zero results in positive zero.
*/
@SuppressWarnings("static-method") @Test public
void
testPackFloatPositiveZero()
{
Assert.assertTrue(Binary16.POSITIVE_ZERO == Binary16.packFloat(0.0f));
}
/**
* Integers in the range [0, 65520] should be representable.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testPackFloatUnpackDouble()
{
for (int i = 0; i <= 65536; i+=stepping) {
final float in = i;
final char packed = Binary16.packFloat(in);
final double r = Binary16.unpackDouble(packed);
if( verbose ) {
System.out.println(String.format(
"packed: 0x%04x 0b%s in: %f unpacked: %f",
(int) packed,
Binary16.toRawBinaryString(packed),
in,
r));
}
if (i <= 2048) {
Assert.assertEquals(in, r, 0.0);
}
if ((i > 2048) && (i <= 4096)) {
Assert.assertTrue((r % 2) == 0);
}
if ((i > 4096) && (i <= 8192)) {
Assert.assertTrue((r % 4) == 0);
}
if ((i > 8192) && (i <= 16384)) {
Assert.assertTrue((r % 8) == 0);
}
if ((i > 16384) && (i <= 32768)) {
Assert.assertTrue((r % 16) == 0);
}
if ((i > 32768) && (i < 65536)) {
Assert.assertTrue((r % 32) == 0);
}
if (i == 65536) {
Assert.assertTrue(Double.isInfinite(r));
}
}
}
/**
* Integers in the range [0, 65520] should be representable.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testPackUnpackDouble()
{
for (int i = 0; i <= 65536; i+=stepping) {
final double in = i;
final char packed = Binary16.packDouble(in);
final double r = Binary16.unpackDouble(packed);
if( verbose ) {
System.out.println(String.format(
"packed: 0x%04x 0b%s in: %f unpacked: %f",
(int) packed,
Binary16.toRawBinaryString(packed),
in,
r));
}
if (i <= 2048) {
Assert.assertEquals(in, r, 0.0);
}
if ((i > 2048) && (i <= 4096)) {
Assert.assertTrue((r % 2) == 0);
}
if ((i > 4096) && (i <= 8192)) {
Assert.assertTrue((r % 4) == 0);
}
if ((i > 8192) && (i <= 16384)) {
Assert.assertTrue((r % 8) == 0);
}
if ((i > 16384) && (i <= 32768)) {
Assert.assertTrue((r % 16) == 0);
}
if ((i > 32768) && (i < 65536)) {
Assert.assertTrue((r % 32) == 0);
}
if (i == 65536) {
Assert.assertTrue(Double.isInfinite(r));
}
}
}
/**
* Integers in the range [0, 65520] should be representable.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testPackUnpackFloat()
{
for (int i = 0; i <= 65536; i+=stepping) {
final float in = i;
final char packed = Binary16.packFloat(in);
final float r = Binary16.unpackFloat(packed);
if( verbose ) {
System.out.println(String.format(
"packed: 0x%04x 0b%s in: %f unpacked: %f",
(int) packed,
Binary16.toRawBinaryString(packed),
in,
r));
}
if (i <= 2048) {
Assert.assertEquals(in, r, 0.0);
}
if ((i > 2048) && (i <= 4096)) {
Assert.assertTrue((r % 2) == 0);
}
if ((i > 4096) && (i <= 8192)) {
Assert.assertTrue((r % 4) == 0);
}
if ((i > 8192) && (i <= 16384)) {
Assert.assertTrue((r % 8) == 0);
}
if ((i > 16384) && (i <= 32768)) {
Assert.assertTrue((r % 16) == 0);
}
if ((i > 32768) && (i < 65536)) {
Assert.assertTrue((r % 32) == 0);
}
if (i == 65536) {
Assert.assertTrue(Float.isInfinite(r));
}
}
}
/**
* Signs in the range [0, 1] are encoded and decoded correctly.
*/
@SuppressWarnings("static-method") @Test public void testSignIdentity()
{
System.out.println("-- Sign identities");
for (int e = 0; e <= 1; ++e) {
final char p = Binary16.packSetSignUnchecked(e);
final int u = Binary16.unpackGetSign(p);
if( verbose ) {
System.out.println("e: " + e +", p: "+Integer.toHexString(p)+", u: "+u);
}
Assert.assertEquals(e, u);
}
}
/**
* Significands in the range [0, 1023] are encoded and decoded correctly.
*/
@SuppressWarnings("static-method") @Test public
void
testSignificandIdentity()
{
System.out.println("-- Significand identities");
for (int e = 0; e <= 1023; ++e) {
final char p = Binary16.packSetSignificandUnchecked(e);
final int u = Binary16.unpackGetSignificand(p);
if( verbose ) {
System.out.println("e: " + e +", p: "+Integer.toHexString(p)+", u: "+u);
}
Assert.assertEquals(e, u);
}
}
/**
* Unpacking NaN results in NaN.
*/
@SuppressWarnings("static-method") @Test public void testUnpackDoubleNaN()
{
final double k = Binary16.unpackDouble(Binary16.exampleNaN());
Assert.assertTrue(Double.isNaN(k));
}
/**
* Unpacking negative infinity results in negative infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testUnpackDoubleNegativeInfinity()
{
Assert.assertTrue(Double.NEGATIVE_INFINITY == Binary16
.unpackDouble(Binary16.NEGATIVE_INFINITY));
}
/**
* Unpacking negative zero results in negative zero.
*/
@SuppressWarnings("static-method") @Test public
void
testUnpackDoubleNegativeZero()
{
Assert.assertTrue(-0.0 == Binary16.unpackDouble(Binary16.NEGATIVE_ZERO));
}
/**
* Unpacking 1.0 results in 1.0.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testUnpackDoubleOne()
{
final char one = 0x3C00;
final double r = Binary16.unpackDouble(one);
System.out.println(String.format("0x%04x -> %f", (int) one, r));
Assert.assertEquals(r, 1.0, 0.0);
}
/**
* Unpacking -1.0 results in -1.0.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testUnpackDoubleOneNegative()
{
final char one = 0xBC00;
final double r = Binary16.unpackDouble(one);
System.out.println(String.format("0x%04x -> %f", (int) one, r));
Assert.assertEquals(r, -1.0, 0.0);
}
/**
* Unpacking positive infinity results in positive infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testUnpackDoublePositiveInfinity()
{
Assert.assertTrue(Double.POSITIVE_INFINITY == Binary16
.unpackDouble(Binary16.POSITIVE_INFINITY));
}
/**
* Unpacking positive zero results in positive zero.
*/
@SuppressWarnings("static-method") @Test public
void
testUnpackDoublePositiveZero()
{
Assert.assertTrue(0.0 == Binary16.unpackDouble(Binary16.POSITIVE_ZERO));
}
/**
* Unpacking 2.0 results in 2.0.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testUnpackDoubleTwo()
{
final char one = 0x4000;
final double r = Binary16.unpackDouble(one);
System.out.println(String.format("%04x -> %f", (int) one, r));
Assert.assertEquals(r, 2.0, 0.0);
}
/**
* Unpacking -2.0 results in -2.0.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testUnpackDoubleTwoNegative()
{
final char one = 0xC000;
final double r = Binary16.unpackDouble(one);
System.out.println(String.format("%04x -> %f", (int) one, r));
Assert.assertEquals(r, -2.0, 0.0);
}
/**
* Unpacking NaN results in NaN.
*/
@SuppressWarnings("static-method") @Test public void testUnpackFloatNaN()
{
final float k = Binary16.unpackFloat(Binary16.exampleNaN());
Assert.assertTrue(Float.isNaN(k));
}
/**
* Unpacking negative infinity results in negative infinity.
*/
@SuppressWarnings("static-method") @Test public
void
testUnpackFloatNegativeInfinity()
{
Assert.assertTrue(Float.NEGATIVE_INFINITY == Binary16
.unpackFloat(Binary16.NEGATIVE_INFINITY));
}
/**
* Unpacking negative zero results in negative zero.
*/
@SuppressWarnings("static-method") @Test public
void
testUnpackFloatNegativeZero()
{
Assert.assertTrue(-0.0 == Binary16.unpackFloat(Binary16.NEGATIVE_ZERO));
}
/**
* Unpacking 1.0 results in 1.0.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testUnpackFloatOne()
{
final char one = 0x3C00;
final float r = Binary16.unpackFloat(one);
System.out.println(String.format("0x%04x -> %f", (int) one, r));
Assert.assertEquals(r, 1.0, 0.0);
}
/**
* Unpacking -1.0 results in -1.0.
*/
@SuppressWarnings({ "static-method", "boxing" }) @Test public
void
testUnpackFloatOneNegative()
{
final char one = 0xBC00;
final float r = Binary16.unpackFloat(one);
System.out.println(String.format("0x%04x -> %f", (int) one, r));
Assert.assertEquals(r, -1.0, 0.0);
}
public static void main(final String args[]) {
for(int i=0; i<args.length; i++) {
if(args[i].equals("-stepping")) {
stepping = MiscUtils.atoi(args[++i], stepping);
} else if(args[i].equals("-verbose")) {
verbose = true;
}
}
org.junit.runner.JUnitCore.main(TestBinary16NOUI.class.getName());
}
}