-- C450001.A -- -- Grant of Unlimited Rights -- -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687, -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained -- unlimited rights in the software and documentation contained herein. -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making -- this public release, the Government intends to confer upon all -- recipients unlimited rights equal to those held by the Government. -- These rights include rights to use, duplicate, release or disclose the -- released technical data and computer software in whole or in part, in -- any manner and for any purpose whatsoever, and to have or permit others -- to do so. -- -- DISCLAIMER -- -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A -- PARTICULAR PURPOSE OF SAID MATERIAL. --* -- -- OBJECTIVE: -- Check that operations on modular types perform correctly. -- -- Check that loops over the range of a modular type do not over or -- under run the loop. -- -- TEST DESCRIPTION: -- Check logical and arithmetic operations. -- (Attributes are tested elsewhere) -- Checks to make sure that: -- for X in Mod_Type loop -- doesn't do something silly like infinite loop. -- -- -- CHANGE HISTORY: -- 20 SEP 95 SAIC Initial version -- 20 FEB 96 SAIC Added underrun cases for 2.1 -- --! ----------------------------------------------------------------- C450001_0 package C450001_0 is type Unsigned_8_Bit is mod 2**8; Shy_By_One : constant := 2**8-1; Heavy_By_Two : constant := 2**8+2; type Unsigned_Edge_8 is mod Shy_By_One; type Unsigned_Over_8 is mod Heavy_By_Two; procedure Loop_Check; -- embed some calls to Report.Ident_Int: function ID( U8B: Unsigned_8_Bit ) return Unsigned_8_Bit; function ID( UEB: Unsigned_Edge_8 ) return Unsigned_Edge_8; function ID( UOB: Unsigned_Over_8 ) return Unsigned_Over_8; end C450001_0; -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- with Report; package body C450001_0 is procedure Loop_Check is Counter_Check : Natural := 0; begin for Ever in Unsigned_8_Bit loop Counter_Check := Report.Ident_Int(Counter_Check) + 1; if Counter_Check > 2**8 then Report.Failed("Unsigned_8_Bit loop overrun"); exit; end if; end loop; if Counter_Check < 2**8 then Report.Failed("Unsigned_8_Bit loop underrun"); end if; Counter_Check := 0; for Never in Unsigned_Edge_8 loop Counter_Check := Report.Ident_Int(Counter_Check) + 1; if Counter_Check > Shy_By_One then Report.Failed("Unsigned_Edge_8 loop overrun"); exit; end if; end loop; if Counter_Check < Shy_By_One then Report.Failed("Unsigned_Edge_8 loop underrun"); end if; Counter_Check := 0; for Getful in reverse Unsigned_Over_8 loop Counter_Check := Report.Ident_Int(Counter_Check) + 1; if Counter_Check > Heavy_By_Two then Report.Failed("Unsigned_Over_8 loop overrun"); exit; end if; end loop; if Counter_Check < Heavy_By_Two then Report.Failed("Unsigned_Over_8 loop underrun"); end if; end Loop_Check; function ID( U8B: Unsigned_8_Bit ) return Unsigned_8_Bit is begin return Unsigned_8_Bit(Report.Ident_Int(Integer(U8B))); end ID; function ID( UEB: Unsigned_Edge_8 ) return Unsigned_Edge_8 is begin return Unsigned_Edge_8(Report.Ident_Int(Integer(UEB))); end ID; function ID( UOB: Unsigned_Over_8 ) return Unsigned_Over_8 is begin return Unsigned_Over_8(Report.Ident_Int(Integer(UOB))); end ID; end C450001_0; ------------------------------------------------------------------- C450001 with Report; with C450001_0; with TCTouch; procedure C450001 is use C450001_0; BR : constant String := " produced the wrong result"; procedure Is_T(B:Boolean;S:String) renames TCTouch.Assert; procedure Is_F(B:Boolean;S:String) renames TCTouch.Assert_Not; Whole_8_A, Whole_8_B, Whole_8_C : C450001_0.Unsigned_8_Bit; Short_8_A, Short_8_B, Short_8_C : C450001_0.Unsigned_Edge_8; Over_8_A, Over_8_B, Over_8_C : C450001_0.Unsigned_Over_8; begin -- Main test procedure. C450001 Report.Test ("C450001", "Check that operations on modular types " & "perform correctly." ); -- the cases for the whole 8 bit type are pretty simple Whole_8_A := 2#00000000#; Whole_8_B := 2#11111111#; Is_T((ID(Whole_8_A) and ID(Whole_8_B)) = 2#00000000#,"8 bit and" & BR); Is_T((ID(Whole_8_A) or ID(Whole_8_B)) = 2#11111111#,"8 bit or" & BR); Is_T((ID(Whole_8_A) xor ID(Whole_8_B)) = 2#11111111#,"8 bit xor" & BR); Whole_8_A := 2#00001111#; Whole_8_B := 2#11111111#; Is_T((ID(Whole_8_A) and ID(Whole_8_B)) = 2#00001111#,"8 bit and" & BR); Is_T((ID(Whole_8_A) or ID(Whole_8_B)) = 2#11111111#,"8 bit or" & BR); Is_T((ID(Whole_8_A) xor ID(Whole_8_B)) = 2#11110000#,"8 bit xor" & BR); Whole_8_A := 2#10101010#; Whole_8_B := 2#11110000#; Is_T((ID(Whole_8_A) and ID(Whole_8_B)) = 2#10100000#,"8 bit and" & BR); Is_T((ID(Whole_8_A) or ID(Whole_8_B)) = 2#11111010#,"8 bit or" & BR); Is_T((ID(Whole_8_A) xor ID(Whole_8_B)) = 2#01011010#,"8 bit xor" & BR); -- the cases for the partial 8 bit type involve subtracting the modulus -- from results that exceed the modulus. -- hence, any of the following operations that exceed 2#11111110# must -- have 2#11111111# subtracted from the result; i.e. where you would -- expect to see 2#11111111# as in the above operations, the correct -- result will be 2#00000000#. Note that 2#11111111# is not a legal -- value of type C450001_0.Unsigned_Edge_8. Short_8_A := 2#11100101#; Short_8_B := 2#00011111#; Is_T((ID(Short_8_A) and ID(Short_8_B)) = 2#00000101#,"8 short and 1" & BR); Is_T((ID(Short_8_A) or ID(Short_8_B)) = 2#00000000#,"8 short or 1" & BR); Is_T((ID(Short_8_A) xor ID(Short_8_B)) = 2#11111010#,"8 short xor 1" & BR); Short_8_A := 2#11110000#; Short_8_B := 2#11111110#; Is_T((ID(Short_8_A) and ID(Short_8_B)) = 2#11110000#,"8 short and 2" & BR); Is_T((ID(Short_8_A) or ID(Short_8_B)) = 2#11111110#,"8 short or 2" & BR); Is_T((ID(Short_8_A) xor ID(Short_8_B)) = 2#00001110#,"8 short xor 2" & BR); Short_8_A := 2#10101010#; Short_8_B := 2#01010101#; Is_T((ID(Short_8_A) and ID(Short_8_B)) = 2#00000000#,"8 short and 3" & BR); Is_T((ID(Short_8_A) or ID(Short_8_B)) = 2#00000000#,"8 short or 3" & BR); Is_T((ID(Short_8_A) xor ID(Short_8_B)) = 2#00000000#,"8 short xor 3" & BR); Short_8_A := 2#10101010#; Short_8_B := 2#11111110#; Is_T((ID(Short_8_A) and ID(Short_8_B)) = 2#10101010#,"8 short and 4" & BR); Is_T((ID(Short_8_A) or ID(Short_8_B)) = 2#11111110#,"8 short or 4" & BR); Is_T((ID(Short_8_A) xor ID(Short_8_B)) = 2#01010100#,"8 short xor 4" & BR); -- the cases for the over 8 bit type have similar issues to the short type -- however the bit patterns are a little different. The rule is to subtract -- the modulus (258) from any resulting value equal or greater than the -- modulus -- note that 258 = 2#100000010# Over_8_A := 2#100000000#; Over_8_B := 2#011111111#; Is_T((ID(Over_8_A) and ID(Over_8_B)) = 2#000000000#,"8 over and" & BR); Is_T((ID(Over_8_A) or ID(Over_8_B)) = 2#011111101#,"8 over or" & BR); Is_T((ID(Over_8_A) xor ID(Over_8_B)) = 2#011111101#,"8 over xor" & BR); Over_8_A := 2#100000001#; Over_8_B := 2#011111111#; Is_T((ID(Over_8_A) and ID(Over_8_B)) = 2#000000001#,"8 over and" & BR); Is_T((ID(Over_8_A) or ID(Over_8_B)) = 2#011111101#,"8 over or" & BR); Is_T((ID(Over_8_A) xor ID(Over_8_B)) = 2#011111100#,"8 over xor" & BR); Whole_8_A := 128; Whole_8_B := 255; Is_T(ID(Whole_8_A) /= ID(Whole_8_B), "8 /=" & BR); Is_F(ID(Whole_8_A) = ID(Whole_8_B), "8 =" & BR); Is_T(ID(Whole_8_A) <= ID(Whole_8_B), "8 <=" & BR); Is_T(ID(Whole_8_A) < ID(Whole_8_B), "8 < " & BR); Is_F(ID(Whole_8_A) >= ID(Whole_8_B), "8 >=" & BR); Is_T(ID(Whole_8_A) > ID(Whole_8_B + 7), "8 > " & BR); Is_T(ID(Whole_8_A) in ID(100)..ID(200), "8 in" & BR); Is_F(ID(Whole_8_A) not in ID(100)..ID(200), "8 not in" & BR); Is_F(ID(Whole_8_A) in ID(200)..ID(250), "8 in" & BR); Is_T(ID(Whole_8_A) not in ID(200)..ID(250), "8 not in" & BR); Short_8_A := 127; Short_8_B := 254; Is_T(ID(Short_8_A) /= ID(Short_8_B), "short 8 /=" & BR); Is_F(ID(Short_8_A) = ID(Short_8_B), "short 8 =" & BR); Is_T(ID(Short_8_A) <= ID(Short_8_B), "short 8 <=" & BR); Is_T(ID(Short_8_A) < ID(Short_8_B), "short 8 < " & BR); Is_F(ID(Short_8_A) >= ID(Short_8_B), "short 8 >=" & BR); Is_F(ID(Short_8_A) > ID(Short_8_B), "short 8 > " & BR); Is_T(ID(Short_8_A) in ID(100)..ID(200), "8 in" & BR); Is_F(ID(Short_8_A) not in ID(100)..ID(200), "8 not in" & BR); Is_F(ID(Short_8_A) in ID(200)..ID(250), "8 in" & BR); Is_T(ID(Short_8_A) not in ID(200)..ID(250), "8 not in" & BR); Whole_8_A := 1; Whole_8_B := 254; Short_8_A := 1; Short_8_B := 2; Whole_8_C := ID(Whole_8_A) + ID(Whole_8_B); Is_T(Whole_8_C = C450001_0.Unsigned_8_Bit'Last, "8 binary + 1" & BR); Whole_8_C := Whole_8_C + ID(Whole_8_A); Is_T(Whole_8_C = C450001_0.Unsigned_8_Bit'First, "8 binary + 2" & BR); Whole_8_C := ID(Whole_8_A) - ID(Whole_8_A); Is_T(Whole_8_C = 0, "8 binary -" & BR); Whole_8_C := Whole_8_C - ID(Whole_8_A); Is_T(Whole_8_C = C450001_0.Unsigned_8_Bit'Last, "8 binary + 3" & BR); Short_8_C := ID(Short_8_A) + ID(C450001_0.Unsigned_Edge_8'Last); Is_T(Short_8_C = C450001_0.Unsigned_Edge_8'First, "Short binary + 1" & BR); Short_8_C := Short_8_A + ID(Short_8_A); Is_T(Short_8_C = ID(Short_8_B), "Short binary + 2" & BR); Short_8_C := ID(Short_8_A) - ID(Short_8_A); Is_T(Short_8_C = 0, "Short 8 binary -" & BR); Short_8_C := Short_8_C - ID(Short_8_A); Is_T(Short_8_C = C450001_0.Unsigned_Edge_8'Last, "Short binary + 3" & BR); Whole_8_C := ( + ID(Whole_8_B) ); Is_T(Whole_8_C = 254, "8 unary +" & BR); Whole_8_C := ( - ID(Whole_8_A) ); Is_T(Whole_8_C = C450001_0.Unsigned_8_Bit'Last, "8 unary -" & BR); Whole_8_C := ( - ID(0) ); Is_T(Whole_8_C = 0, "8 unary -0" & BR); Short_8_C := ( + ID(C450001_0.Unsigned_Edge_8'Last) ); Is_T(Short_8_C = 254, "Short 8 unary +" & BR); Short_8_C := ( - ID(Short_8_A) ); Is_T(Short_8_C = C450001_0.Unsigned_Edge_8'Last, "Short 8 unary -" & BR); Whole_8_A := 20; Whole_8_B := 255; Whole_8_C := ID(Whole_8_A) * ID(Whole_8_B); -- 5100 = 19*256 + 236 (256-20) Is_T(Whole_8_C = 236, "8 *" & BR); Short_8_A := 9; Short_8_B := 254; Short_8_C := ID(Short_8_A) * ID(Short_8_B); -- 2286 = 8*255 + 246 (255-9) Is_T(Short_8_C = 246, "short 8 *" & BR); Over_8_A := 12; Over_8_B := 86; Over_8_C := ID(Over_8_A) * ID(Over_8_B); -- 1032 = 4*258 + 0 Is_T(Over_8_C = 0, "over 8 *" & BR); Whole_8_A := 255; Whole_8_B := 4; Whole_8_C := ID(Whole_8_A) / ID(Whole_8_B); Is_T(Whole_8_C = 63, "8 /" & BR); Short_8_A := 253; Short_8_B := 127; Short_8_C := ID(Short_8_A) / ID(Short_8_B); Is_T(Short_8_C = 1, "short 8 / 1" & BR); Short_8_C := ID(Short_8_A) / ID(126); Is_T(Short_8_C = 2, "short 8 / 2" & BR); Whole_8_A := 255; Whole_8_B := 254; Whole_8_C := ID(Whole_8_A) rem ID(Whole_8_B); Is_T(Whole_8_C = 1, "8 rem" & BR); Short_8_A := 222; Short_8_B := 111; Short_8_C := ID(Short_8_A) rem ID(Short_8_B); Is_T(Short_8_C = 0, "short 8 rem" & BR); Whole_8_A := 99; Whole_8_B := 9; Whole_8_C := ID(Whole_8_A) mod ID(Whole_8_B); Is_T(Whole_8_C = 0, "8 mod" & BR); Short_8_A := 254; Short_8_B := 250; Short_8_C := ID(Short_8_A) mod ID(Short_8_B); Is_T(Short_8_C = 4, "short 8 mod" & BR); Whole_8_A := 99; Whole_8_C := abs Whole_8_A; Is_T(Whole_8_C = ID(99), "8 abs" & BR); Short_8_A := 254; Short_8_C := ID( abs Short_8_A ); Is_T(Short_8_C = 254, "short 8 abs" & BR); Whole_8_B := 2#00001111#; Whole_8_C := not Whole_8_B; Is_T(Whole_8_C = ID(2#11110000#), "8 not" & BR); Short_8_B := 2#00001111#; -- 15 Short_8_C := ID( not Short_8_B ); -- 254 - 15 Is_T(Short_8_C = 2#11101111#, "short 8 not" & BR); -- 239 Whole_8_A := 2; Whole_8_C := Whole_8_A ** 7; Is_T(Whole_8_C = ID(128), "2 ** 7, whole 8" & BR); Whole_8_C := Whole_8_A ** 9; Is_T(Whole_8_C = ID(0), "2 ** 9, whole 8" & BR); Short_8_A := 4; Short_8_C := ID( Short_8_A ) ** 4; Is_T(Short_8_C = 1, "4 ** 4, short" & BR); Over_8_A := 4; Over_8_C := ID( Over_8_A ) ** 4; Is_T(Over_8_C = 256, "4 ** 4, over" & BR); Over_8_C := ID( Over_8_A ) ** 5; -- 1024 = 3*258 + 250 Is_T(Over_8_C = 250, "4 ** 5, over" & BR); C450001_0.Loop_Check; Report.Result; end C450001;