Man Scilab

function - opens a function definition

endfunction - closes a function definition

Description

function <lhs_arguments>=<function_name><rhs_arguments>
<statements>
endfunction
   
    

Where

<function_name> stands for the name of the function

<rhs_arguments> stands for the input argument list. It may be

- a comma separated sequence of variable names enclosed in parenthesis, like (x1,...,xm) . Last variable name can be the key word varargin (see varargin)

- the sequence () or nothing,if the function has no input argument.

<lhs_arguments> stands for the output argument list. It may be

- a comma separated sequence of variable names enclosed in brackets, like [y1,...,yn] . Last variable name can be the key word varargout (see varargout)

- the sequence [] ,if the function has no input argument. In this case the syntax may also be: function <function_name><rhs_arguments>

<statements> stands for a set of scilab instructions (statements) This syntax may be used to define function (see functions) inline or in a script file (see exec). For compatibility with old Scilab versions, functions defined in a script file containing only function definitions can be "loaded" into Scilab using the getf function.

The function <lhs_arguments>=<function_name><rhs_arguments> sequence cannot be split over several lines. This sequence can be followed by statements in the same line if a comma of semi column is added at its end.

function definitions can be nested

Examples

//inline definition (see function)
function [x,y]=myfct(a,b)
x=a+b
y=a-b
endfunction

[x,y]=myfct(3,2)

//a one line function definition
function y=sq(x),y=x^2,endfunction

sq(3)

//nested functions definition
function y=foo(x)
a=sin(x)
function y=sq(x), y=x^2,endfunction
y=sq(a)+1
endfunction

foo(%pi/3)


// definition in an script file (see exec)
exec SCI/macros/elem/asin.sci;


 
  

See Also

functions ,   exec ,   getf ,  

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