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## Copyright (C) 2014 Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
##
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or (at
## your option) any later version.
##
## This program is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} km2nm (@var{km})
## Convert kilometers into nautical miles.
##
## @seealso{km2sm, nm2km, nm2sm, sm2km, sm2nm}
## @end deftypefn
## Author: Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
function nm = km2nm (km)
if (nargin != 1)
print_usage ();
endif
persistent ratio = unitsratio ("nautical mile", "kilometer");
nm = km * ratio;
endfunction
%!test
%! km = [1.8520 3.7040 5.5560 7.4080 12.9640 14.8160];
%! nm = [1 2 3 4 7 8];
%! assert (km2nm (km), nm)
%! km = reshape (km, [1 3 2]);
%! nm = reshape (nm, [1 3 2]);
%! assert (km2nm (km), nm)
%!assert (km2nm (1.852), 1)
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