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[Frama-c-discuss] EVA postcondition propagation

  • Subject: [Frama-c-discuss] EVA postcondition propagation
  • From: Arthur.CLAVIERE at student.isae-supaero.fr (CLAVIERE Arthur)
  • Date: Thu, 22 Jun 2017 15:52:20 +0200
When using a specification instead of a function, it seems that EVA propagates postconditions for double variables but not for float variables. With the following example, we obtain :
x in [-1.79769313486e+308 .. 1.79769313486e+308]
y in {1.}

/*@
  @ assigns \nothing;
  @ ensures \result == 1.0f;
  @*/
float foo();

/*@
  @ assigns \nothing;
  @ ensures \result == 1.0;
  @*/
double foo_d();

int main(int argc, char *argv[])
{
    float  x = foo();
    double y = foo_d();

    return 0;
}



Regards,

Arthur

--
  
Arthur CLAVIÈRE
Elève ingénieur SUPAERO - 2A
ISAE SUPAERO - Institut Supérieur de l'Aéronautique et de l'Espace
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