blob: 0f52d7901c748bb78729040fd9ebf6b63fb446aa (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
## Copyright (C) 2014-2022 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} {} sm2nm (@var{sm})
## Convert U.S. survey miles (statute miles) into nautical miles.
##
## @seealso{km2nm, km2sm, nm2km, nm2sm, sm2km}
## @end deftypefn
## Author: Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
function nm = sm2nm (sm)
if (nargin != 1)
print_usage ();
endif
persistent ratio = unitsratio ("nautical mile", "U.S. survey mile (statute mile)");
nm = sm * ratio;
endfunction
%!test
%! nm = [50.292 100.584 25.146 10058.4];
%! sm = [57.875 115.75 28.9375 11575];
%! assert (sm2nm (sm), nm)
%! sm = reshape (sm, [2 2 1]);
%! nm = reshape (nm, [2 2 1]);
%! assert (sm2nm (sm), nm)
%!assert (sm2nm (28.9375), 25.146)
|
