Bitwise right shift operator >>

The >> (bitwise right shift operator) performs a logical or an algebraic right shift for each element of a vector. Each element of the result vector is the result of right shifting the corresponding element of the left operand by the number of bits specified by the value of the corresponding element of the right operand, modulo the number of bits in the element. When the right operand is an unsigned vector type, the bits that are shifted out are replaced by zeroes. While if the left operand is a signed vector type, the bits that are shifted out are replaced by copies of the most significant bit of the element of the left operand.

The following table lists the vector data types accepted as the operands, and the corresponding returned vector data types:

Table 1. Accepted vector data types for bitwise right shift operator >>
Result types	Left operand types	Right operand types
vector unsigned char	vector unsigned char	vector unsigned char
vector unsigned short	vector unsigned short	vector unsigned short
vector unsigned int	vector unsigned int	vector unsigned int
vector unsigned long long	vector unsigned long long	vector unsigned long long
vector unsigned char	vector unsigned char	unsigned long
vector unsigned short	vector unsigned short	unsigned long
vector unsigned int	vector unsigned int	unsigned long
vector unsigned long long	vector unsigned long long	unsigned long
vector signed char	vector signed char	vector signed char
vector signed char	vector signed char	vector unsigned char
vector signed short	vector signed short	vector signed short
vector signed short	vector signed short	vector unsigned short
vector signed int	vector signed int	vector signed int
vector signed int	vector signed int	vector unsigned int
vector signed long long	vector signed long long	vector signed long long
vector signed long long	vector signed long long	vector unsigned long long
vector signed char	vector signed char	unsigned long
vector signed short	vector signed short	unsigned long
vector signed int	vector signed int	unsigned long
vector signed long long	vector signed long long	unsigned long