Convert HEX string to bin

From: GIR (no_at_spam.com)
Date: 11/30/03 

Date: Sun, 30 Nov 2003 12:11:20 +0100

Hi,

I've been trying to tackle the following problem but haven't been
succesfull so far.

I have string

char buffer[64];

which is filled with hexadecimal values, like this.

buffer[0] = A;
buffer[1] = 1;

buffer[0..1] combined make one value, 0xA1, which should be converted
into 10100001.

I know I could use sscanf to get the values out but sscanf is not an
option because it's too big.

Does anybody know a efficient way of converting these values?

TIA,
GIR

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