Android Utililty Methods Byte Array to Long Convert

List of utility methods to do Byte Array to Long Convert

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Description

The list of methods to do Byte Array to Long Convert are organized into topic(s).

Method

longgetLong(byte[] buf, int pos, boolean bigEndian)
Convert byte sequence into java long. 
if (bigEndian) {
    return (((long) buf[pos + 7]) & 0xFF)
            | ((((long) buf[pos + 6]) & 0xFF) << 8)
            | ((((long) buf[pos + 5]) & 0xFF) << 16)
            | ((((long) buf[pos + 4]) & 0xFF) << 24)
            | ((((long) buf[pos + 3]) & 0xFF) << 32)
            | ((((long) buf[pos + 2]) & 0xFF) << 40)
            | ((((long) buf[pos + 1]) & 0xFF) << 48)
...
longgetLong(byte[] bytes)
get Long 
return (0xffL & (long) bytes[0])
        | (0xff00L & ((long) bytes[1] << 8))
        | (0xff0000L & ((long) bytes[2] << 16))
        | (0xff000000L & ((long) bytes[3] << 24))
        | (0xff00000000L & ((long) bytes[4] << 32))
        | (0xff0000000000L & ((long) bytes[5] << 40))
        | (0xff000000000000L & ((long) bytes[6] << 48))
        | (0xff00000000000000L & ((long) bytes[7] << 56));
...
longgetLong4(byte[] b, int offset)
get Long 
long ret = (b[offset] & 0xffL) << 24;
ret += ((b[offset + 1] & 0xffL) << 16);
ret += ((b[offset + 2] & 0xffL) << 8);
ret += (b[offset + 3] & 0xffL);
return ret;
longgetLong5(byte[] b, int offset)
get Long 
long ret = (b[offset] & 0xffL) << 32;
ret += ((b[offset + 1] & 0xffL)) << 24;
ret += ((b[offset + 2] & 0xffL) << 16);
ret += ((b[offset + 3] & 0xffL) << 8);
ret += (b[offset + 4] & 0xffL);
return ret;
longgetLongFromByteArray(final byte[] bytes)
Converts a byte array to a long. 
return ByteBuffer.wrap(bytes).getLong();
longtoLong(byte[] b, int pos)
to Long 
return toLong(b, pos, 8);
longtoLong(byte[] b, int pos, int width)
to Long 
long ret = 0;
for (int i = 0; i < width; i++) {
    ret |= (b[i + pos] & 0xFFl) << (8 * i);
return ret;
longtoLong(byte[] src)
to Long 
return toLong(src, 0);
longtoLong(byte[] src, int srcPos)
to Long 
long qword = 0;
for (int i = 0; i < 8; i++) {
    qword = (qword << 8) + (src[i + srcPos] & 0xFF);
return qword;
longmakeLong(byte b7, byte b6, byte b5, byte b4, byte b3, byte b2, byte b1, byte b0)
make Long 
return ((((long) b7 & 0xff) << 56) | (((long) b6 & 0xff) << 48)
        | (((long) b5 & 0xff) << 40) | (((long) b4 & 0xff) << 32)
        | (((long) b3 & 0xff) << 24) | (((long) b2 & 0xff) << 16)
        | (((long) b1 & 0xff) << 8) | (((long) b0 & 0xff) << 0));