Bitwise left shift operator <<

The << (bitwise left shift operator) performs a left shift for each element of a vector. Each element of the result vector is the result of left shifting the corresponding element of the left operand by the number of bits specified by the value specified on the right operand, or the value of the corresponding element of the right operand, modulo the number of bits in the element. The bits that are shifted out are replaced by zeros.

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 left shift operator <<
Result types	Left operand types	Right operand types
vector unsigned char	vector unsigned char	vector unsigned char
vector signed char	vector signed char	vector unsigned char
vector unsigned short	vector unsigned short	vector unsigned short
vector signed short	vector signed short	vector unsigned short
vector unsigned int	vector unsigned int	vector unsigned int
vector signed int	vector signed int	vector unsigned int
vector unsigned long long	vector unsigned long long	vector unsigned long long
vector signed long long	vector signed long long	vector unsigned long long
vector unsigned char	vector unsigned char	unsigned long
vector signed char	vector signed char	unsigned long
vector unsigned short	vector unsigned short	unsigned long
vector signed short	vector signed short	unsigned long
vector unsigned int	vector unsigned int	unsigned long
vector signed int	vector signed int	unsigned long
vector unsigned long long	vector unsigned long long	unsigned long
vector signed long long	vector signed long long	unsigned long