🚀 go-pugleaf

X-Original-Date: 2 Jan 1996 07:22:26 GMT

I'm no expert but here is what I know.  The specifier volatile is 
a directive to the compiler that the variable declared volatile 
can change at any moment.  The compiler will then make no 
assumptions about the contents of this variable, and will always 
re-check its value when used.  An example of something that might 
use volatile variables is:  a hardware interface to your PC which 
reads analog data and converts it to digital.  Your program may 
read the data from the PC bus.  However this data is always 
changing and your program should make know assumptions that the 
data is the same - it should always recheck the value.

I'm sure there are other less complicated applications which may 
benefit from volatile variables.  I'm sure one of the many other 
experts on the net can elaborate.

-dnult@axiom.net


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