mirrors/bitcoinj
1
0
Fork 0
mirror of https://github.com/bitcoinj/bitcoinj.git synced 2025-02-24 22:58:32 +01:00
Code Issues Projects Releases Packages Wiki Activity

Utils: Remove reverseDwordBytes(), it wasn't used.

Browse source
This commit is contained in:
Andreas Schildbach 2018-02-22 10:47:07 +01:00
parent 4300b2ee40
commit 8295afc03b
2 changed files with 0 additions and 29 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
core/src/main/java/org/bitcoinj/core/Utils.java
View file

@ -174,27 +174,6 @@ public class Utils {
return buf;
}
/**
* Returns a copy of the given byte array with the bytes of each double-word (4 bytes) reversed.
*
* @param bytes length must be divisible by 4.
* @param trimLength trim output to this length. If positive, must be divisible by 4.
*/
public static byte[] reverseDwordBytes(byte[] bytes, int trimLength) {
checkArgument(bytes.length % 4 == 0);
checkArgument(trimLength < 0 || trimLength % 4 == 0);
byte[] rev = new byte[trimLength >= 0 && bytes.length > trimLength ? trimLength : bytes.length];
for (int i = 0; i < rev.length; i += 4) {
System.arraycopy(bytes, i, rev, i , 4);
for (int j = 0; j < 4; j++) {
rev[i + j] = bytes[i + 3 - j];
}
}
return rev;
}
/** Parse 4 bytes from the byte array (starting at the offset) as unsigned 32-bit integer in little endian format. */
public static long readUint32(byte[] bytes, int offset) {
return (bytes[offset] & 0xffl) |

8
core/src/test/java/org/bitcoinj/core/UtilsTest.java
View file

@ -33,14 +33,6 @@ public class UtilsTest {
assertArrayEquals(new byte[]{1, 2, 3, 4, 5}, Utils.reverseBytes(new byte[]{5, 4, 3, 2, 1}));
}
@Test
public void testReverseDwordBytes() {
assertArrayEquals(new byte[]{1, 2, 3, 4, 5, 6, 7, 8}, Utils.reverseDwordBytes(new byte[]{4, 3, 2, 1, 8, 7, 6, 5}, -1));
assertArrayEquals(new byte[]{1, 2, 3, 4}, Utils.reverseDwordBytes(new byte[]{4, 3, 2, 1, 8, 7, 6, 5}, 4));
assertArrayEquals(new byte[0], Utils.reverseDwordBytes(new byte[]{4, 3, 2, 1, 8, 7, 6, 5}, 0));
assertArrayEquals(new byte[0], Utils.reverseDwordBytes(new byte[0], 0));
}
@Test
public void testMaxOfMostFreq() throws Exception {
assertEquals(0, Utils.maxOfMostFreq());