mtlb_exist
==========

Matlab exist emulation function



Description
~~~~~~~~~~~

There is no Scilab equivalent for Matlab `exist` except when input is
a variable. Scilab `mtlb_exist` is a partial emulation of of this
function.

The function `r = mtlb_exist(nam[,tp])` is used by `mfile2sci` to
replace `exist(nam[,tp])` when it was not possible to know what were
the inputs while porting Matlab code to Scilab. This function will
determine the correct semantic at run time. If you want to have a more
efficient code it is possible to replace `mtlb_exist` calls:


+ When called with one input and if `nam` is a variable name,
  `mtlb_exist(nam)` may be replaced by `exists(nam)`


Caution: `mtlb_exist` has not to be used for hand coded functions.



See Also
~~~~~~~~


+ `exists`_ checks variable existence


.. _exists: exists.html