Get function handle to matlab's quadprog, while shadowed by mosek

Alec Jacobson

March 05, 2012

weblog/

Here's a small function I use to retrieve a function handle to MATLAB's quadprog which is shadowed when I have installed the mosek toolbox:

function [quadprog_matlab,matlab_path] = get_quadprog_matlab()
  % GET_QUADPROG_MATLAB returns function handle to matlab's builtin quadprog
  % (useful if, say, mosek has shadowed it)
  %
  % [quadprog_matlab,matlab_path] = get_quadprog_matlab();
  %
  % Outputs:
  %  quadprog_matlab  function handle to matlab's quadprog
  %  matlab_path  path to matlab's quadprog
  %
  % [quadprog_matlab,matlab_path] = get_quadprog_matlab();
  % help(matlab_path);
  % X = quadprog_matlab(H,f,A,b);

  % get list of all quadprogs
  paths = which('quadprog.m','-ALL');
  % remember current directory
  old_dir = pwd;
  matlab_path = paths(~cellfun(@isempty,regexp(paths,'MATLAB')));
  matlab_path = matlab_path{1};
  % move to that directory
  cd(regexprep(matlab_path,'quadprog.m',''));
  quadprog_matlab = @quadprog;
  cd(old_dir);
end