logit.m

% logit(x) returns the logit of the elements of X. It is the inverse of
% sigmoid(x).
function y = logit (x)

  % Part of the varbvs package, https://github.com/pcarbo/varbvs
  %
  % Copyright (C) 2012-2017, Peter Carbonetto
  %
  % This program is free software: you can redistribute it under the
  % terms of the GNU General Public License; 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 WARRANY; without even the implied warranty of
  % MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  % General Public License for more details.
  %
  y = log((x + eps)./((1 - x) + eps));