12.115 VSRA (by immediate)

Vector Shift Right by immediate value and Accumulate.

Syntax

VSRA{cond}.datatype {Qd}, Qm, #imm

VSRA{cond}.datatype {Dd}, Dm, #imm

where:

cond

is an optional condition code.

datatype

must be one of S8, S16, S32, S64, U8, U16, U32, or U64.

Qd, Qm

are the destination vector and the operand vector, for a quadword operation.

Dd, Dm

are the destination vector and the operand vector, for a doubleword operation.

imm

is the immediate value specifying the size of the shift. The ranges are shown in the following table:

Table 12-24 Available immediate ranges in VSRA (by immediate)

datatype imm range
S8 or U8 1 to 8
S16 or U16 1 to 16
S32 or U32 1 to 32
S64 or U64 1 to 64

Operation

VSRA takes each element in a vector, right shifts them by an immediate value, and accumulates the results into the destination vector. The results are truncated.

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