1 ## Copyright (C) 1995-2012 Kurt Hornik
3 ## This file is part of Octave.
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
7 ## the Free Software Foundation; either version 3 of the License, or (at
8 ## your option) any later version.
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.
15 ## You should have received a copy of the GNU General Public License
16 ## along with Octave; see the file COPYING. If not, see
17 ## <http://www.gnu.org/licenses/>.
20 ## @deftypefn {Function File} {} probit (@var{p})
21 ## For each component of @var{p}, return the probit (the quantile of the
22 ## standard normal distribution) of @var{p}.
25 ## Written by KH <Kurt.Hornik@wu-wien.ac.at> on 1995/02/04
26 ## Description: Probit transformation
28 function y = probit (p)
35 y = stdnormal_inv (p);
39 %!assert(probit([-1, 0, 0.5, 1, 2]), [NaN, -Inf, 0, Inf, NaN]);
41 %% Test input validation