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[Frama-c-discuss] nondeterminism

On Mon, Sep 16, 2013 at 1:39 AM, Stephen Siegel <siegel at udel.edu> wrote:

>
> I guess you could obtain something like this using a function
> "chooseBool()" which returns a boolean and which is totally unconstrained,
> and use that as the condition in an "if" statement.  Or you could use a
> function "chooseInt()" with a switch statement.
>
>
You will find contracts for functions Frama_C_interval() and
Frama_C_nondet() in __fc_builtin.h:

extern int Frama_C_entropy_source;

/*@ assigns \result \from a, b, Frama_C_entropy_source;
    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
    ensures \result == a || \result == b ;
 */
int Frama_C_nondet(int a, int b);

/*@ assigns \result \from min, max, Frama_C_entropy_source;
    assigns Frama_C_entropy_source \from Frama_C_entropy_source;
    ensures min <= \result <= max ;
 */
int Frama_C_interval(int min, int max);
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