Frama-C-discuss mailing list archives

This page gathers the archives of the old Frama-C-discuss archives, that was hosted by Inria's gforge before its demise at the end of 2020. To search for mails newer than September 2020, please visit the page of the new mailing list on Renater.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Frama-c-discuss] YASE \lambda

  • Subject: [Frama-c-discuss] YASE \lambda
  • From: Christoph.Weber at first.fraunhofer.de (Christoph Weber)
  • Date: Fri Oct 17 11:51:23 2008
Salut,

I'm thinking about some stuff I found in the acsl1_3 manual. I encountered \lambda, it seems comfortable so I wonder will following example work in the next release?

/*@
 requires last > first;
 requires \valid_range(first, 0, last-first -1);
 ensures  \result == \sum(0, last-first -1,(\lambda integer k ; first[k] == value ? 1 : 0)); 

*/
int count_int_array ( int* first, int* last, int value )
{
  int ret=0;
  //@ ghost int* a = first;
    /*@
     loop invariant a <= first <= last;
     loop invariant ret == \sum(0, first-a-1,(\lambda integer k ; first[k] == value ? 1 : 0));
    */
  while (first != last) if (*first++ == value) ++ret;
  return ret;
}

Merci d'avance

Christoph
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.gforge.inria.fr/pipermail/frama-c-discuss/attachments/20081017/17ef22f4/attachment.html