src/HOL/SPARK/Manual/document/loop_invariant.ads
author wenzelm
Mon, 24 Oct 2022 20:37:32 +0200
changeset 76371 1ac2416e8432
parent 45044 2fae15f8984d
permissions -rw-r--r--
tuned signature (again, amending f32ac01aef5e), e.g. relevant for Isabelle/DOF;

package Loop_Invariant
is

   type Word32 is mod 2 ** 32;

   procedure Proc1 (A : in Natural; B : in Word32; C : out Word32);
   --# derives C from A, B;
   --# post Word32 (A) * B = C;

   procedure Proc2 (A : in Natural; B : in Word32; C : out Word32);
   --# derives C from A, B;
   --# post Word32 (A) * B = C;

end Loop_Invariant;