Mega Code Archive
To Bit String
<![CDATA[
/*
* @(#)$Id: StringUtils.java 3619 2008-03-26 07:23:03Z yui $
*
* Copyright 2006-2008 Makoto YUI
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributors:
* Makoto YUI - initial implementation
*/
//package xbird.util.string;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
*/
public final class StringUtils {
public static String toBitString(final double d) {
final char[] bit = new char[64];
final long dd = Double.doubleToLongBits(d);
long mask = 1L;
for(int i = 0; i < 64; i++) {
final long bitval = dd & mask;
if(bitval == 0) {
bit[63 - i] = '0';
} else {
bit[63 - i] = '1';
}
mask <<= 1;
}
return String.valueOf(bit);
}
public static String toBitString(final float f) {
final char[] bit = new char[32];
final int ff = Float.floatToIntBits(f);
int mask = 1;
for(int i = 0; i < 32; i++) {
final int bitval = ff & mask;
if(bitval == 0) {
bit[31 - i] = '0';
} else {
bit[31 - i] = '1';
}
mask <<= 1;
}
return String.valueOf(bit);
}
public static String toBitString(final long n) {
final char[] bit = new char[64];
long mask = 1L;
for(int i = 0; i < 64; i++) {
final long bitval = n & mask;
if(bitval == 0) {
bit[63 - i] = '0';
} else {
bit[63 - i] = '1';
}
mask <<= 1;
}
return String.valueOf(bit);
}
public static String toBitString(final int n) {
final char[] bit = new char[32];
int mask = 1;
for(int i = 0; i < 32; i++) {
final int bitval = n & mask;
if(bitval == 0) {
bit[31 - i] = '0';
} else {
bit[31 - i] = '1';
}
mask <<= 1;
}
return String.valueOf(bit);
}
public static String toBitString(final byte[] b) {
final char[] bits = new char[8 * b.length];
for(int i = 0; i < b.length; i++) {
final byte byteval = b[i];
int bytei = i << 3;
int mask = 0x1;
for(int j = 7; j >= 0; j--) {
final int bitval = byteval & mask;
if(bitval == 0) {
bits[bytei + j] = '0';
} else {
bits[bytei + j] = '1';
}
mask <<= 1;
}
}
return String.valueOf(bits);
}
}
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