%-*-Mode:erlang;coding:utf-8;tab-width:4;c-basic-offset:4;indent-tabs-mode:()-*-
% ex: set ft=erlang fenc=utf-8 sts=4 ts=4 sw=4 et nomod:
%%%
%%%------------------------------------------------------------------------
%%%
%%% BSD LICENSE
%%% 
%%% Copyright (c) 2017, Michael Truog <mjtruog at gmail dot com>
%%% All rights reserved.
%%% 
%%% Redistribution and use in source and binary forms, with or without
%%% modification, are permitted provided that the following conditions are met:
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%%%       the documentation and/or other materials provided with the
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%%%       software must display the following acknowledgment:
%%%         This product includes software developed by Michael Truog
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%%%       products derived from this software without specific prior
%%%       written permission
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%%%------------------------------------------------------------------------

-define(APPLICATION, quickrand).

% 1 / (16#1fffffffffffff + 1) =:= math:pow(2, -53) to provide [0.0 .. 1.0]
-define(DBL_EPSILON_DIV2, 1.1102230246251565e-16).

-define(BYTES_RESOLUTION, 4). % bytes

bytes(I) when is_integer(I), I > 0 ->
    bytes(0, I).

bytes(Bytes, 0) ->
    Bytes;
bytes(Bytes, I) ->
    bytes(Bytes + ?BYTES_RESOLUTION, I bsr (?BYTES_RESOLUTION * 8)).