mfile2sci

Arguments

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 flag, if %T mfile2sci considers that numerical function have been used only with numerical data (no Scilab overloading function is needed). Default value: %T

verbose-mode

display information mode

0

no information displayed

1

information written as comment is resulting SCI-file

2

information written as comment is resulting SCI-file and in logfile

3

information written as comment is resulting SCI-file, in logfile and displayed in Scilab window

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 generate three files in the same directory

<function-name>.sci

the Scilab equivalent of the M-file

<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 �quivalent 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)

When called without rhs, mfile2sci() launches a GUI to help to select a file/directory and options.

Examples

// Create a simple M-file
rot90m = ["function B = rot90(A,k)"
    "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
mfile2sci(TMPDIR + "/rot90.m",TMPDIR)

// Show the new code
mgetl(TMPDIR + "/rot90.sci")

// Load it into scilab
exec(TMPDIR+'/rot90.sci')

// Execute it
m=rand(4,2);
rot90(m,1)

See Also

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

Authors

• V. Couvert
• S. Steer