You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: bitcmp.m
    path of file: ./repos/SuiteSparse/GraphBLAS/GraphBLAS/@GrB
    
    the code of the file until where you have to start completion: function C = bitcmp (A, assumedtype)
%BITCMP bitwise complement.
% C = bitcmp (A) is the bitwise complement of A.  C is a full matrix.  To
% complement all the bits in the entries of a sparse matrix, but not the
% implicit entries not in the pattern of C, use
% C = GrB.apply ('bitcmp', A) instead.
%
% With a second parameter, C = bitcmp (A,assumedtype) provides a data type
% to convert A to if it is a floating-point type.  If A already has an
% integer type, then it is not modified.  Otherwise, A is converted to
% assumedtype, which can be 'int8', 'int16', 'int32', 'int64', 'uint8',
% 'uint16', 'uint32' or 'uint64'.  The default is 'uint64'.
%
% Example:
%
%   A = GrB (magic (4), 'uint8')
%   C = bitcmp (A)
%   fprintf ('\nA: ') ; fprintf ('%3x ', A) ; fprintf ('\n') ;
%   fprintf ('\nC: ') ; fprintf ('%3x ', C) ; fprintf ('\n') ;
%   C2 = bitcmp (uint8 (A))

    
function C = bitcmp (A, assumedtype)
%BITCMP bitwise complement.
% C = bitcmp (A) is the bitwise complement of A.  C is a full matrix.  To
% complement all the bits in the entries of a sparse matrix, but not the
% implicit entries not in the pattern of C, use
% C = GrB.apply ('bitcmp', A) instead.
%
% With a second parameter, C = bitcmp (A,assumedtype) provides a data type
% to convert A to if it is a floating-point type.  If A already has an
% integer type, then it is not modified.  Otherwise, A is converted to
% assumedtype, which can be 'int8', 'int16', 'int32', 'int64', 'uint8',
% 'uint16', 'uint32' or 'uint64'.  The default is 'uint64'.
%
% Example:
%
%   A = GrB (magic (4), 'uint8')
%   C = bitcmp (A)
%   fprintf ('\nA: ') ; fprintf ('%3x ', A) ; fprintf ('\n') ;
%   fprintf ('\nC: ') ; fprintf ('%3x ', C) ; fprintf ('\n') ;
%   C2 = bitcmp (uint8 (A))
%   isequal (C2, C)
%
% See also GrB/bitor, GrB/bitand, GrB/bitxor, GrB/bitshift, GrB/bitget,
% GrB/bitset, GrB/bitclr.

% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2023, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0

if (nargin < 2)
    assumedtype = 'uint64' ;
end