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DEC Decimal Arbitrary Precision

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dec include money.hrl

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include/money.hrl

-ifndef(MONEY_HRL).
-define(MONEY_HRL, true).

-type fraction_length() :: integer().
-type digits() :: integer().
-type money() :: {fraction_length(),digits()}.

-spec mul(money(),money()) -> money().
-spec 'div'(money(),money()) -> money().
-spec add(money(),money()) -> money().
-spec sub(money(),money()) -> money().

-endif.

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