From octave-sources-request at bevo dot che dot wisc dot edu Mon Jan 27 14:06:58 2003
Subject: finance/nomir.m
From: Stefan Burger <s dot burger at debitel dot net>
To: octave-sources at bevo dot che dot wisc dot edu
Date: Mon, 27 Jan 2003 06:56:00 -0600


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Calculate the nominal interest rate, given an effective interest rate.=20
Best regards,=20

Stefan Burger
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## Copyright (C) 2003 Stefan Burger
##
## This file is part of Octave.
##
## Octave 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 2, or (at your option) any
## later version.
##
## Octave 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 Octave; see the file COPYING.  If not, write to the Free
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.

## -*- texinfo -*-
##  at deftypefn {Function File} {} nomir (@var{ieff}, @var{n})
## Return the nominal annual interest rate to a given annual effective interest rate
##  at var{ieff}, when compounding over @var{n} periods..
##  at end deftypefn
##  at seealso{effir}

## Author: Stefan Burger <Stefan dot Burger at stud dot tu-muenchen dot de>
## Description: Nominal rate of interest.

function inom = nomir (ieff, n)

  if (nargin != 2)
    usage("nomir (ieff, n)");
  endif

  if (! (isscalar (n)))
    error ("nomir: n must be a scalar");
  endif

  inom = n*((ieff+1).^(1/n)-1);

endfunction

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