global

Define global variable

Calling Sequence

global('nam1',...,'namn')
global nam1 ... namn

Arguments

:nam1,..., namn valid variable names :

Description

Ordinarily, each Scilab function, has its own local variables and can “read” all variables created in the base workspace or by the calling functions. The global keyword allow to make variables read/write across functions. Any assignment to that variable, in any function, is available to all the other functions declaring it global.

If the global variable does not exist the first time you issue the global statement, it will be initialized to the empty matrix.

Examples

//first: calling environnment and a function share a variable
global a
a=1
`deff`_('y=f1(x)','global a,a=x^2,y=a^2')
f1(2)
a
//second: three functions share variables
`deff`_('initdata()','global A C ;A=10,C=30')
`deff`_('letsgo()','global A C ;disp(A) ;C=70')
`deff`_('letsgo1()','global C ;disp(C)')
initdata()
letsgo()
letsgo1()

See Also

• who listing of variables
• isglobal check if a variable is global
• clearglobal kills global variables
• gstacksize set/get scilab global stack size
• resume return or resume execution and copy some local variables