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## Copyright (C) 1996-2021 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## This file is part of Octave.
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########################################################################

## -*- texinfo -*-
## @deftypefn {} {} dec2hex (@var{d}, @var{len})
## Return the hexadecimal string corresponding to the non-negative integer
## @var{d}.
##
## For example:
##
## @example
## @group
## dec2hex (2748)
##      @result{} "ABC"
## @end group
## @end example
##
## If @var{d} is a matrix or cell array, return a string matrix with one row
## per element in @var{d}, padded with leading zeros to the width of the
## largest value.
##
## The optional second argument, @var{len}, specifies the minimum number of
## digits in the result.
## @seealso{hex2dec, dec2base, dec2bin}
## @end deftypefn

function h = dec2hex (d, len)

  if (nargin == 1)
    h = dec2base (d, 16);
  elseif (nargin == 2)
    h = dec2base (d, 16, len);
  else
    print_usage ();
  endif

endfunction


%!assert (dec2hex (2748), "ABC")
%!assert (dec2hex (2748, 5), "00ABC")
%!assert (dec2hex ({2748, 2746}), ["ABC"; "ABA"])

## Test input validation
%!error dec2hex ()
%!error dec2hex (1, 2, 3)