Mercurial > hg > octave-lyh
annotate scripts/specfun/lcm.m @ 12635:83fa84ef63ca
maint: Move lcm.m from elfun to specfun directory.
* elfun/module.mk: Remove lcm.m from list
* specfun/module.mk: Add lcm.m to list
| author | Rik <octave@nomad.inbox5.com> |
|---|---|
| date | Mon, 25 Apr 2011 12:32:22 -0700 |
| parents | scripts/elfun/lcm.m@3c6e8aaa9555 |
| children | cefd568ea073 |
| rev | line source |
|---|---|
| 11523 | 1 ## Copyright (C) 1994-2011 John W. Eaton |
| 2313 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 2313 | 9 ## |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 1026 | 18 |
| 3321 | 19 ## -*- texinfo -*- |
| 11028 | 20 ## @deftypefn {Mapping Function} {} lcm (@var{x}, @var{y}) |
| 21 ## @deftypefnx {Mapping Function} {} lcm (@var{x}, @var{y}, @dots{}) | |
| 22 ## Compute the least common multiple of @var{x} and @var{y}, | |
|
11563
3c6e8aaa9555
Grammarcheck m-files before 3.4 release.
Rik <octave@nomad.inbox5.com>
parents:
11523
diff
changeset
|
23 ## or of the list of all arguments. All elements must be the same size or |
|
3c6e8aaa9555
Grammarcheck m-files before 3.4 release.
Rik <octave@nomad.inbox5.com>
parents:
11523
diff
changeset
|
24 ## scalar. |
|
9141
c1fff751b5a8
Update section 17.1 (Utility Functions) of arith.txi
Rik <rdrider0-list@yahoo.com>
parents:
9051
diff
changeset
|
25 ## @seealso{factor, gcd} |
| 3321 | 26 ## @end deftypefn |
| 2311 | 27 |
| 5428 | 28 ## Author: KH <Kurt.Hornik@wu-wien.ac.at> |
| 2312 | 29 ## Created: 16 September 1994 |
| 30 ## Adapted-By: jwe | |
| 31 | |
| 4870 | 32 function l = lcm (varargin) |
| 904 | 33 |
| 11028 | 34 if (nargin > 1) |
| 35 if (common_size (varargin{:}) != 0) | |
| 36 error ("lcm: all args must be of the same size or scalar"); | |
| 37 elseif (! all (cellfun (@isnumeric, varargin))) | |
| 38 error ("lcm: all arguments must be numeric"); | |
| 4870 | 39 endif |
| 2325 | 40 |
| 4870 | 41 l = varargin{1}; |
| 8507 | 42 for i = 2:nargin |
| 11028 | 43 x = varargin{i}; |
| 44 msk = l == 0 & x == 0; | |
| 45 l .*= x ./ gcd (l, x); | |
| 46 l(msk) = 0; | |
| 715 | 47 endfor |
| 11028 | 48 else |
| 49 print_usage (); | |
| 715 | 50 endif |
| 2325 | 51 |
| 715 | 52 endfunction |
| 7385 | 53 |
| 11028 | 54 %!assert(lcm (3, 5, 7, 15) == 105); |
| 7385 | 55 |
| 56 %!error lcm (); | |
| 57 | |
| 58 %!test | |
| 59 %! s.a = 1; | |
| 60 %! fail("lcm (s)"); | |
| 61 |