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mrinalwadhwa/pad_binary.erl

Last active February 12, 2016 11:00
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Pad a binary with zeros
Raw
pad_binary.erl
-module(pad_binary).
% http://erlang.org/pipermail/erlang-questions/2008-December/040709.html
-spec pad_binary_to(WidthInBytes :: pos_integer(), Raw :: binary()) ->
Padded :: binary().
pad_binary_to(WidthInBytes, Raw) ->
case (WidthInBytes - size(Raw) rem WidthInBytes) rem WidthInBytes of
0 -> Raw;
N -> <<Raw/binary, 0:(N*8)>>
end.
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