# mfile2sci

Matlab M-file to Scilab conversion function

### Syntax

mfile2sci() // interactive GUI mfile2sci(M_file_path) mfile2sci(M_file_path, result_path ) mfile2sci(M_file_path, result_path, Recmode) mfile2sci(M_file_path, result_path, Recmode, only_double) mfile2sci(M_file_path, result_path, Recmode, only_double, verbose_mode) mfile2sci(M_file_path, result_path, Recmode, only_double, verbose_mode, prettyprintoutput)

### Arguments

To use the default value of some input arguments, just skip their value as in
`mfile2sci(M_file_path, result_path, , , 0)`

.

- M_file_path
a character string which gives the path of Matlab M-file to convert

- result_path
a character string which gives the directory where the result has to be written. Default value is current directory.

- Recmode
Boolean flag, used by

`translatepaths()`

function for recursive conversion. Must be %F to convert a single mfile. Default value: %F- only_double
Boolean: If %T, mfile2sci() considers that numerical functions and operators (like "+") are used only with numerical data. This excludes for instance instructions like

`"ab" + "cd"`

(that then will be kept as is instead of being converted into`asciimat("ab") + asciimat("cd")`

).Default value: %F: All possible conversions are done.

- verbose_mode
display information mode

0 : no information displayed 1 : information is written as comments in resulting SCI-file. 2 : information is written as comments in resulting SCI-file and in logfile. [3] : information is written as comments in resulting SCI-file, in logfile and displayed in Scilab window. (Default value) - prettyprintoutput
Boolean flag, if %T generated code is beautified. Default value: %F

### Description

M2SCI (and particularly mfile2sci) is Matlab M-file to Scilab function conversion tools. It tries whenever possible to replace call to Matlab functions by the equivalent Scilab primitives and functions.

To convert a Matlab M-file just enter the Scilab instruction:
`mfile2sci(file)`

where file is a character string giving the path name of the M-file.

`mfile2sci(..)`

will then generate three files in the same directory:

<function-name>.sci |
The result of the translation of the M-file in Scilab language. |

<function-name>.cat |
the Scilab help file associated to the function |

sci_<function-name>.sci |
The Scilab function required to convert the calls to this Matlab M-file in other Matlab M-files. This function may be improved "by hand". This function is only useful for conversion not for use of translated functions. |

Some functions like eye, ones, size, sum,... behave differently according to the
dimension of their arguments. When mfile2sci cannot infer dimensions it replaces
these function call by a call to an emulation function named mtlb_<function_name>.
For efficiency, these functions may be replaced by the proper scilab equivalent
instructions.
To get information about replacement, enter:
`help mtlb_<function_name>`

in Scilab command window

Some other functions like plot, has no straightforward equivalent in scilab.
They are also replaced by an emulation function named
`mtlb_<function_name>`

.

When translation may be incorrect or may be improved mfile2sci adds a comment which begins by "//!" (according to verbose_mode)

`mfile2sci()` without input argument launches a GUI allowing to
select a file/directory, and to configure and run the converter:
mfile2sci() |

### Examples

// Create a simple M-file rot90m = ["function B = rot90(A,k)" "" "%m2scideclare k|1 1|Double|Real" "" "if ~isa(A, ''double'')" " error(''rot90: Wrong type for input argument #1: Real or complex matrix expected.'');" " return" "end" "[m,n] = size(A);" "if nargin == 1" " k = 1;" "else" " if ~isa(k, ''double'')" " error(''rot90: Wrong type for input argument #2: A real expected.'');" " return" " end" " k = rem(k,4);" " if k < 0" " k = k + 4;" " end" "end" "if k == 1" " A = A.'';" " B = A(n:-1:1,:);" "elseif k == 2" " B = A(m:-1:1,n:-1:1);" "elseif k == 3" " B = A(m:-1:1,:);" " B = B.'';" "else" " B = A;" "end"]; mputl(rot90m, TMPDIR + "/rot90.m") // Convert it to scilab language mfile2sci(TMPDIR + "/rot90.m",TMPDIR) // Show the new code editor(TMPDIR + "/rot90.sci") // Compile it in scilab exec(TMPDIR+'/rot90.sci') // Call & use it m = rand(4,2); rot90(m,1)

### See also

- translatepaths — convert a set of Matlab M-files directories to Scilab

### History

バージョン | 記述 |

6.0.2 | The `only_double` option is now %F by default. |

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