/usr/share/octave/packages/financial-0.4.0/pvl.m is in octave-financial 0.4.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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) 1995-1998, 2000, 2002, 2005-2007 Kurt Hornik <Kurt.Hornik@wu-wien.ac.at>
##
## 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; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {@var{v} =} pvl (@var{r}, @var{n}, @var{p})
## Return the present value @var{v} of an investment that will pay off @var{p}
## in one lump sum at the end of @var{n} periods, given the interest
## rate @var{r}.
##
## Note that the rate @var{r} is specified as a fraction (i.e., 0.05,
## not 5 percent).
## @end deftypefn
function v = pvl (r, n, p)
if (nargin != 3)
print_usage ();
endif
if (! (isscalar (r) && (r > -1)))
error ("pvl: r has to be a scalar > -1");
elseif (! (isscalar (n) && n > 0))
error ("pvl: n has to be a positive scalar");
elseif (! isscalar (p))
error ("pvl: p has to be a scalar");
endif
v = p / (1 + r)^n;
endfunction
|