significance of using 2kb long byte_rev_table in lib/bitrev.c

[Soumyadip Das Mahapatra]

Hi,
	i cant understand the significance of using 2kb size of
bit_rev_table array in lib/bitrev.c
I guess it has something to do with bit reversal of a 32 bit word.
Well it can be done smoothly without using such a long sized array.
I am sending patches regarding this in the following mails.
Please review them.
Thanks :-)

Soumyadip

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