/* Copyright (C) 2004-2007 Sami Koivu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package net.sf.rej.java.constantpool;
import net.sf.rej.util.ByteSerializer;
public class FloatInfo extends ConstantPoolInfo {
private int bytes;
public FloatInfo(int bytes, ConstantPool pool) {
super(FLOAT, pool);
this.bytes = bytes;
}
public FloatInfo(float value, ConstantPool pool) {
super(FLOAT, pool);
setFloatValue(value);
}
@Override
public String toString() {
return "(float) " + String.valueOf(this.getFloatValue());
}
@Override
public byte[] getData() {
ByteSerializer ser = new ByteSerializer(true);
ser.addByte(getType());
ser.addInt(this.bytes);
return ser.getBytes();
}
@Override
public int hashCode() {
return this.bytes;
}
@Override
public boolean equals(Object other) {
if (other == null) return false;
try {
return this.bytes == ((FloatInfo) other).bytes;
} catch (ClassCastException cce) {
return false;
}
}
@Override
public String getTypeString() {
return "Float constant";
}
public float getFloatValue() {
return Float.intBitsToFloat(this.bytes);
/* old, 'manual' implementation - has some slight problems
int s = ((bytes >> 31) == 0) ? 1 : -1;
int e = ((bytes >> 23) & 0xff);
int m = (e == 0) ? (bytes & 0x7fffff) << 1 : (bytes & 0x7fffff) | 0x800000;
// value = s x m x 2pow(e-150)
float value = (s * m) * (float) Math.pow(2f, e - 150f);
return value;
*/
}
public void setFloatValue(float value) {
this.bytes = Float.floatToRawIntBits(value);
}
public int getBytes() {
return this.bytes;
}
}