gcc/testsuite/gnat.dg/conv_decimal.adb

   1 -- PR middle-end/36575
   2 -- reporter: Laurent Guerby <laurent@guerby.net>
   3 -- { dg-do run }
   4
   5 procedure Conv_Decimal is
   6
   7   type Unsigned_Over_8 is mod 2**8+2;
   8   type Signed_Over_8 is range -200 .. 200;
   9
  10   procedure Assert(Truth: Boolean) is
  11   begin
  12     if not Truth then
  13       raise Program_Error;
  14     end if;
  15   end;
  16
  17   type Decim is delta 0.1 digits 5;
  18
  19   Halfway  : Decim := 2.5;
  20   Neg_Half : Decim := -2.5;
  21
  22   Big      : Unsigned_Over_8;
  23   Also_Big : Signed_Over_8;
  24
  25 begin
  26   Big := Unsigned_Over_8 (Halfway); -- Rounds up by 4.6(33).
  27   Assert(Big = 3);
  28
  29   Also_Big := Signed_Over_8 (Halfway); -- Rounds up by 4.6(33).
  30   Assert(Also_Big = 3);
  31
  32   Also_Big := Signed_Over_8 (Neg_Half); -- Rounds down by 4.6(33).
  33   Assert(Also_Big = -3);
  34 end;