Vector Shift Right Logical and Left Logical

Hardware: G4


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Vector Shift Right Logical and Left Logical

`vec_srl(arg1, arg2) vec_sll(arg1, arg2)`

The result is obtained by shifting the entire 128 bits of arg1 right or left by the number of bits specified in the least significant three bits of arg2. Bits shifted out are replaced by zeroes for both signed and unsigned types.

CAUTION: The three bits used for the shift value must be replicated in each byte of arg2 or the results of the shift are unpredictable. This may be done using vec_splat / vec_vspltb:

arg2 = vec_vspltb( arg2, 15 );

Result	arg1	arg2	vec_srl	vec_sll
Result	arg1	arg2	Maps To
vector unsigned char	vector unsigned char	vector unsigned char	vsr	vsl
vector unsigned char	vector unsigned char	vector unsigned short	vsr	vsl
vector unsigned char	vector unsigned char	vector unsigned long	vsr	vsl
vector signed char	vector signed char	vector unsigned char	vsr	vsl
vector signed char	vector signed char	vector unsigned short	vsr	vsl
vector signed char	vector signed char	vector unsigned long	vsr	vsl
vector bool char	vector bool char	vector unsigned char	vsr	vsl
vector bool char	vector bool char	vector unsigned short	vsr	vsl
vector bool char	vector bool char	vector unsigned long	vsr	vsl
vector unsigned short	vector unsigned short	vector unsigned char	vsr	vsl
vector unsigned short	vector unsigned short	vector unsigned short	vsr	vsl
vector unsigned short	vector unsigned short	vector unsigned long	vsr	vsl
vector signed short	vector signed short	vector unsigned char	vsr	vsl
vector signed short	vector signed short	vector unsigned short	vsr	vsl
vector signed short	vector signed short	vector unsigned long	vsr	vsl
vector bool short	vector bool short	vector unsigned char	vsr	vsl
vector bool short	vector bool short	vector unsigned short	vsr	vsl
vector bool short	vector bool short	vector unsigned long	vsr	vsl
vector pixel	vector pixel	vector unsigned char	vsr	vsl
vector pixel	vector pixel	vector unsigned short	vsr	vsl
vector pixel	vector pixel	vector unsigned long	vsr	vsl
vector unsigned long	vector unsigned long	vector unsigned char	vsr	vsl
vector unsigned long	vector unsigned long	vector unsigned short	vsr	vsl
vector unsigned long	vector unsigned long	vector unsigned long	vsr	vsl
vector signed long	vector signed long	vector unsigned char	vsr	vsl
vector signed long	vector signed long	vector unsigned short	vsr	vsl
vector signed long	vector signed long	vector unsigned long	vsr	vsl
vector bool long	vector bool long	vector unsigned char	vsr	vsl
vector bool long	vector bool long	vector unsigned short	vsr	vsl
vector bool long	vector bool long	vector unsigned long	vsr	vsl