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Differences From Artifact [079f989c24]:

To Artifact [f99aedd664]:


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with Interfaces; use Interfaces;

package body Natools.Static_Maps.S_Expressions.Templates.Integers.MC is

   P : constant array (0 .. 3) of Natural :=
     (1, 2, 5, 9);

   T1 : constant array (0 .. 3) of Unsigned_8 :=
     (31, 27, 5, 36);

   T2 : constant array (0 .. 3) of Unsigned_8 :=
     (3, 33, 25, 27);

   G : constant array (0 .. 40) of Unsigned_8 :=
     (0, 0, 17, 16, 0, 17, 0, 0, 0, 0, 0, 12, 1, 12, 0, 7, 2, 9, 11, 4, 6,
      0, 17, 0, 0, 0, 0, 16, 5, 0, 1, 0, 0, 15, 0, 0, 0, 0, 13, 0, 7);


   function Hash (S : String) return Natural is
      F : constant Natural := S'First - 1;
      L : constant Natural := S'Length;
      F1, F2 : Natural := 0;
      J : Natural;
   begin
      for K in P'Range loop
         exit when L < P (K);
         J  := Character'Pos (S (P (K) + F));
         F1 := (F1 + Natural (T1 (K)) * J) mod 41;
         F2 := (F2 + Natural (T2 (K)) * J) mod 41;
      end loop;
      return (Natural (G (F1)) + Natural (G (F2))) mod 20;
   end Hash;

end Natools.Static_Maps.S_Expressions.Templates.Integers.MC;




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with Interfaces; use Interfaces;

package body Natools.Static_Maps.S_Expressions.Templates.Integers.MC is

   P : constant array (0 .. 4) of Natural :=
     (1, 2, 5, 6, 9);

   T1 : constant array (0 .. 4) of Unsigned_8 :=
     (15, 31, 41, 38, 11);

   T2 : constant array (0 .. 4) of Unsigned_8 :=
     (10, 33, 15, 23, 26);

   G : constant array (0 .. 44) of Unsigned_8 :=
     (0, 0, 0, 0, 5, 17, 14, 0, 5, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 13, 21,
      0, 0, 0, 11, 18, 7, 0, 16, 4, 2, 9, 0, 0, 15, 0, 0, 0, 2, 3, 7, 13, 0,
      1);

   function Hash (S : String) return Natural is
      F : constant Natural := S'First - 1;
      L : constant Natural := S'Length;
      F1, F2 : Natural := 0;
      J : Natural;
   begin
      for K in P'Range loop
         exit when L < P (K);
         J  := Character'Pos (S (P (K) + F));
         F1 := (F1 + Natural (T1 (K)) * J) mod 45;
         F2 := (F2 + Natural (T2 (K)) * J) mod 45;
      end loop;
      return (Natural (G (F1)) + Natural (G (F2))) mod 22;
   end Hash;

end Natools.Static_Maps.S_Expressions.Templates.Integers.MC;