Reversebytes

Purpose

Flips order of bytes in a word.

Synopsis

res = reversebytes(y,totalbytes,base)

Description

Generalized reversal of bytes. Note that the default is to swap 2 hex bytes in a 16 bit number.

Inputs

• y = the input value(s) to operate on
• totalbytes = the total number of bytes to swap
• base = the number base to work in {default = 2\^8 = 256 = 1 hex byte}

Outputs

• res = result of byte reversal on input y

Examples

To swap 4 bytes in a 32 bit number:

reversebytes(y,4)

To swap 2 words in a 32 bit number:

reversebytes(y,2,2\^16)