vec_perm

Purpose

Returns a vector that contains some elements of two vectors, in the order specified by a third vector.

Syntax

d=vec_perm(a, b, c)

Result and argument types

The following table describes the types of the returned value and the function arguments.

Table 1. Result and argument types
d	a	b	c
The same type as argument `a`	vector bool char	The same type as argument `a`	vector unsigned char
	vector signed char
	vector unsigned char
	vector bool short
	vector signed short
	vector unsigned short
	vector pixel
	vector bool int
	vector signed int
	vector unsigned int
	vector bool long long
	vector signed long long
	vector unsigned long long
	vector float
	vector double

Result value

Each byte of the result is selected by using the least significant five bits of the corresponding byte of c as an index into the concatenated bytes of a and b.