Java Utililty Methods Unsigned Number Create

List of utility methods to do Unsigned Number Create

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Description

The list of methods to do Unsigned Number Create are organized into topic(s).

Method

longunsigned(int num)
unsigned 
return 0xFFFFFFFFL & num;
longunsigned(int val)
Considers the bits of a signed 32-bit integer, and converts it into a long integer as if it were unsigned, i.e. 
return val >= 0 ? val : ((val & 0x7FFFFFFF) | (1L << 31));
intunsigned(short value)
Convert a short into its unsigned representation as int. 
return value & 0x0000ffff;
longunsigned16(short s)
unsigned 
return s & 0xFFFFL;
byte[]unsigned32ToBytes(long value)
unsigned To Bytes 
return toBytes(value, 4);
longunsigned32ToInt(byte[] bytes)
unsigned To Int 
return fromBytes(bytes, 4);
longunsigned4BytesToInt(byte[] buf, int pos)
unsigned Bytes To Int 
int firstByte = 0;
int secondByte = 0;
int thirdByte = 0;
int fourthByte = 0;
int index = pos;
firstByte = (0x000000FF & ((int) buf[index]));
secondByte = (0x000000FF & ((int) buf[index + 1]));
thirdByte = (0x000000FF & ((int) buf[index + 2]));
...
intunsigned8(byte b)
unsigned 
return b & 0xFF;
intunsigned_byte(byte b)
unsignebyte 
return b & 0xff;
booleanunsignedAddOverflow(int operand1, int operand2)
Returns true, if the addition of both operands as unsigned integers will cause an overflow. 
long value1 = (long) operand1 & 0xFFFFFFFFL;
long value2 = (long) operand2 & 0xFFFFFFFFL;
return ((value1 + value2) & 0x100000000L) != 0;