Bit Operation and Representation Procedures: table

Name	Procedure Type	Description
Bit Operation
BIT_SIZE	Intrinsic Function	Returns the number of bits in integers of type the argument.
BTEST	Intrinsic Function	Tests a bit in a position of the argument; true if bit is 1.
IAND	Intrinsic Function	Performs a logical AND.
IBCHNG	Intrinsic Function	Reverses value of bit in a position of the argument.
IBCLR	Intrinsic Function	Clears the bit in a position of the argument to zero.
IBITS	Intrinsic Function	Extracts a sequence of bits of length from the argument starting in a position.
IBSET	Intrinsic Function	Sets the bit in a position of the argument to one.
IEOR	Intrinsic Function	Performs an exclusive OR.
IOR	Intrinsic Function	Performs an inclusive OR.
ISHA	Intrinsic Function	Shifts the argument arithmetically left or right by shift bits; left if shift positive, right if shift negative. Zeros shifted in from the right, ones shifted in from the left.
ISHC	Intrinsic Function	Performs a circular shift of the argument left or right by shift bits; left if shift positive, right if shift negative. No bits lost.
ISHFT	Intrinsic Function	Shifts the argument logically left or right by shift bits; left if shift positive, right if shift negative. Zeros shifted in from opposite end.
ISHFTC	Intrinsic Function	Performs a circular shift of the rightmost bits of (optional) size by shift bits. No bits lost.
ISHL	Intrinsic Function	Shifts the argument logically left or right by shift bits. Zeros shifted in from opposite end.
MVBITS	Intrinsic Subroutine	Copies a sequence of bits from one integer to another.
NOT	Intrinsic Function	Performs a logical complement.
Bit Representation
LEADZ	Intrinsic Function	Returns leading zero bits in an integer.
POPCNT	Intrinsic Function	Returns number of 1 bits in an integer.
POPPAR	Intrinsic Function	Returns the parity of an integer.
TRAILZ	Intrinsic Function	Returns trailing zero bits in an integer.