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cleanup

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This commit is contained in:
Hannes Janetzek 2012-09-08 14:31:34 +02:00
parent 17ae9fe098
commit 232f4d577d
1 changed files with 0 additions and 116 deletions
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116
src/org/mapsforge/android/utils/FastMath.java
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@ -1,116 +0,0 @@
package org.mapsforge.android.utils;
/**
* Copyright (c) 2009-2010 jMonkeyEngine All rights reserved. FastMath.java
*/
public class FastMath {
private static final byte b0x7c = (byte) 0x7c;
private static final byte b0x00 = (byte) 0x00;
private static final byte b0x01 = (byte) 0x01;
private static final byte b0xfc = (byte) 0xfc;
private static final byte b0x80 = (byte) 0x80;
private static final byte b0x7b = (byte) 0x7b;
private static final byte b0xff = (byte) 0xff;
private static final byte b0xfb = (byte) 0xfb;
private static final float FLOAT_HALF_PREC = 5.96046E-8f;
private static final float FLOAT_HALF_MAX = 65504f;
/**
* @param flt
* ...
* @param data
* ...
* @param pos
* ..
*/
public static void convertFloatToHalf(float flt, byte[] data, int pos) {
if (flt == 0f) {
data[pos + 1] = b0x00;
data[pos + 0] = b0x00;
} else if (flt == -0f) {
data[pos + 1] = b0x80;
data[pos + 0] = b0x00;
} else if (flt > FLOAT_HALF_MAX) {
if (flt == Float.POSITIVE_INFINITY) {
data[pos + 1] = b0x7c;
data[pos + 0] = b0x00;
} else {
data[pos + 1] = b0x7b;
data[pos + 0] = b0xff;
}
} else if (flt < -FLOAT_HALF_MAX) {
if (flt == Float.NEGATIVE_INFINITY) {
data[pos + 1] = b0xfc;
data[pos + 0] = b0x00;
} else {
data[pos + 1] = b0xfb;
data[pos + 0] = b0xff;
}
} else if (flt > 0f && flt < FLOAT_HALF_PREC) {
data[pos + 1] = b0x00;
data[pos + 0] = b0x01;
} else if (flt < 0f && flt > -FLOAT_HALF_PREC) {
data[pos + 1] = b0x80;
data[pos + 0] = b0x01;
} else {
int f = Float.floatToIntBits(flt);
if (f == 0x7fc00000)
throw new UnsupportedOperationException(
"NaN to half conversion not supported!");
data[pos + 1] = (byte) (((f >> 24) & 0x80)
| ((((f & 0x7f800000) - 0x38000000) >> 21) & 0x7c)
| ((f >> 21) & 0x03));
data[pos + 0] = (byte) ((f >> 13) & 0xff);
}
}
/**
* @param flt
* ...
* @param data
* ...
* @param pos
* ..
*/
public static void convertFloatToHalf(float flt, short[] data, int pos) {
if (flt == 0f) {
data[pos] = (short) 0x0000;
} else if (flt == -0f) {
data[pos] = (short) 0x8000;
} else if (flt == 1f) {
data[pos] = (short) 0x3c00;
} else if (flt == -1f) {
data[pos] = (short) 0xbc00;
} else if (flt > FLOAT_HALF_MAX) {
if (flt == Float.POSITIVE_INFINITY) {
data[pos] = (short) 0x7c00;
} else {
data[pos] = (short) 0x7bff;
}
} else if (flt < -FLOAT_HALF_MAX) {
if (flt == Float.NEGATIVE_INFINITY) {
data[pos] = (short) 0xfc00;
} else {
data[pos] = (short) 0xfbff;
}
} else if (flt > 0f && flt < FLOAT_HALF_PREC) {
data[pos] = (short) 0x0001;
} else if (flt < 0f && flt > -FLOAT_HALF_PREC) {
data[pos] = (short) 0x8001;
} else {
int f = Float.floatToIntBits(flt);
if (f == 0x7fc00000)
throw new UnsupportedOperationException(
"NaN to half conversion not supported!");
data[pos] = (short) (((f >> 16) & 0x8000)
| ((((f & 0x7f800000) - 0x38000000) >> 13) & 0x7c00)
| ((f >> 13) & 0x03ff));
}
}
}