M2SCI function

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` ,

### Authors

  V.C.