/usr/lib/erlang/lib/stdlib-1.19.4/include/erl_bits.hrl is in erlang-base 1:16.b.3-dfsg-1ubuntu2.2.
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%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1999-2009. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
%% This is an -*- erlang -*- file.
%% Generic compiler options, passed from the erl_compile module.
-type bt_endian():: 'big' | 'little' | 'native'.
-type bt_sign() :: 'signed' | 'unsigned'.
-type bt_type() :: 'integer' | 'float' | 'binary' | 'utf8' | 'utf16' | 'utf32'.
-type bt_unit() :: 1..256.
-record(bittype, {
type :: bt_type(),
unit :: bt_unit(), %% element unit
sign :: bt_sign(),
endian :: bt_endian()
}).
-record(bitdefault, {
integer, %% default type for integer
float, %% default type for float
binary %% default type for binary
}).
%%% (From config.hrl in the bitsyntax branch.)
-define(SYS_ENDIAN, big).
-define(SIZEOF_CHAR, 1).
-define(SIZEOF_DOUBLE, 8).
-define(SIZEOF_FLOAT, 4).
-define(SIZEOF_INT, 4).
-define(SIZEOF_LONG, 4).
-define(SIZEOF_LONG_LONG, 8).
-define(SIZEOF_SHORT, 2).
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