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Diffstat (limited to 'gcc/testsuite/ada/acats/tests/c4/c490002.a')
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diff --git a/gcc/testsuite/ada/acats/tests/c4/c490002.a b/gcc/testsuite/ada/acats/tests/c4/c490002.a deleted file mode 100644 index 71169b833e4..00000000000 --- a/gcc/testsuite/ada/acats/tests/c4/c490002.a +++ /dev/null @@ -1,239 +0,0 @@ --- C490002.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, for a real static expression that is not part of a larger --- static expression, and whose expected type T is an ordinary fixed --- point type that is not a descendant of a formal scalar type, the value --- is rounded to the nearest integral multiple of the small of T if --- T'Machine_Rounds is true, and is truncated otherwise. Check that if --- rounding is performed, and the value is exactly halfway between two --- multiples of the small, one of the two multiples of small is used. --- --- TEST DESCRIPTION: --- The test obtains an integral multiple M1 of the small of an ordinary --- fixed point subtype S by dividing a real literal by S'Small, and then --- truncating the result using 'Truncation. It then obtains an adjacent --- multiple M2 of the small by using S'Succ (or S'Pred). It then --- constructs values which lie between these multiples: one (A) which is --- closer to M1, one (B) which is exactly halfway between M1 and M2, and --- one (C) which is closer to M2. This is done for both positive and --- negative multiples of the small. --- --- Let M1 be closer to zero than M2. Then if S'Machine_Rounds is true, --- C must be rounded to M2, A must be rounded to M1, and B must be rounded --- to either M1 or M2. If S'Machine_Rounds is false, all the values must --- be truncated to M1. --- --- A, B, and C are constructed using the following static expressions: --- --- A: constant S := M1 + (M2 - M1)/Z; -- Z slightly more than 2.0. --- B: constant S := M1 + (M2 - M1)/Z; -- Z equals 2.0. --- C: constant S := M1 + (M2 - M1)/Z; -- Z slightly less than 2.0. --- --- Since these are static expressions, they must be evaluated exactly, --- and no rounding may occur until the final result is calculated. --- --- The checks for equality between the members of (A, B, C) and (M1, M2) --- are performed at run-time within the body of a subprogram. --- --- The test performs additional checks that the rounding performed on --- real literals is consistent for ordinary fixed point subtypes. A --- named number (initialized with a literal) is assigned to a constant of --- a fixed point subtype S. The same literal is then passed to a --- subprogram, along with the constant, and an equality check is --- performed within the body of the subprogram. --- --- --- CHANGE HISTORY: --- 26 Sep 95 SAIC Initial prerelease version. --- ---! - -package C490002_0 is - - type My_Fix is delta 0.0625 range -1000.0 .. 1000.0; - - Small : constant := My_Fix'Small; -- Named number. - - procedure Fixed_Subtest (A, B: in My_Fix; Msg: in String); - - procedure Fixed_Subtest (A, B, C: in My_Fix; Msg: in String); - - --- --- Positive cases: --- - - -- |----|-------------|-----------------|-------------------|-----------| - -- | | | | | | - -- 0 P_M1 Less_Pos_Than_Half Pos_Exactly_Half More_Pos_Than_Half P_M2 - - - Positive_Real : constant := 0.11433; -- Named number. - Pos_Multiplier : constant := Float'Truncation(Positive_Real/Small); - - -- Pos_Multiplier is the number of integral multiples of small contained - -- in Positive_Real. P_M1 is thus the largest integral multiple of - -- small less than or equal to Positive_Real. Note that since Positive_Real - -- is a named number and not a fixed point object, P_M1 is generated - -- without assuming that rounding is performed correctly for fixed point - -- subtypes. - - Positive_Fixed : constant My_Fix := Positive_Real; - - P_M1 : constant My_Fix := Pos_Multiplier * Small; - P_M2 : constant My_Fix := My_Fix'Succ(P_M1); - - -- P_M1 and P_M2 are adjacent multiples of the small of My_Fix. Note that - -- 0.11433 either equals P_M1 (if it is an integral multiple of the small) - -- or lies between P_M1 and P_M2 (since truncation was forced in - -- generating Pos_Multiplier). It is not certain, however, exactly where - -- it lies between them (halfway, less than halfway, more than halfway). - -- This fact is irrelevant to the test. - - - -- The following entities are used to verify that rounding is performed - -- according to the value of 'Machine_Rounds. If language rules are - -- obeyed, the intermediate expressions in the following static - -- initialization expressions will not be rounded; all calculations will - -- be performed exactly. The final result, however, will be rounded to - -- an integral multiple of the small (either P_M1 or P_M2, depending on the - -- value of My_Fix'Machine_Rounds). Thus, the value of each constant below - -- will equal that of P_M1 or P_M2. - - Less_Pos_Than_Half : constant My_Fix := P_M1 + ((P_M2 - P_M1)/2.050); - Pos_Exactly_Half : constant My_Fix := P_M1 + ((P_M2 - P_M1)/2.000); - More_Pos_Than_Half : constant My_Fix := P_M1 + ((P_M2 - P_M1)/1.975); - - --- --- Negative cases: --- - - -- -|-------------|-----------------|-------------------|-----------|----| - -- | | | | | | - -- N_M2 More_Neg_Than_Half Neg_Exactly_Half Less_Neg_Than_Half N_M1 0 - - - -- The descriptions for the positive cases above apply to the negative - -- cases below as well. Note that, for N_M2, 'Pred is used rather than - -- 'Succ. Thus, N_M2 is further from 0.0 (i.e. more negative) than N_M1. - - Negative_Real : constant := -467.13988; -- Named number. - Neg_Multiplier : constant := Float'Truncation(Negative_Real/Small); - - Negative_Fixed : constant My_Fix := Negative_Real; - - N_M1 : constant My_Fix := Neg_Multiplier * Small; - N_M2 : constant My_Fix := My_Fix'Pred(N_M1); - - More_Neg_Than_Half : constant My_Fix := N_M1 + ((N_M2 - N_M1)/1.980); - Neg_Exactly_Half : constant My_Fix := N_M1 + ((N_M2 - N_M1)/2.000); - Less_Neg_Than_Half : constant My_Fix := N_M1 + ((N_M2 - N_M1)/2.033); - -end C490002_0; - - - --==================================================================-- - - -with TCTouch; -package body C490002_0 is - - procedure Fixed_Subtest (A, B: in My_Fix; Msg: in String) is - begin - TCTouch.Assert (A = B, Msg); - end Fixed_Subtest; - - procedure Fixed_Subtest (A, B, C: in My_Fix; Msg: in String) is - begin - TCTouch.Assert (A = B or A = C, Msg); - end Fixed_Subtest; - -end C490002_0; - - - --==================================================================-- - - -with C490002_0; -- Fixed point support. -use C490002_0; - -with Report; -procedure C490002 is -begin - Report.Test ("C490002", "Rounding of real static expressions: " & - "ordinary fixed point subtypes"); - - - -- Literal cases: If the named numbers used to initialize Positive_Fixed - -- and Negative_Fixed are rounded to an integral multiple of the small - -- prior to assignment (as expected), then Positive_Fixed and - -- Negative_Fixed are already integral multiples of the small, and - -- equal either P_M1 or P_M2 (resp., N_M1 or N_M2). An equality check - -- can determine in which direction rounding occurred. For example: - -- - -- if (Positive_Fixed = P_M1) then -- Rounding was toward 0.0. - -- - -- Check here that the rounding direction is consistent for literals: - - if (Positive_Fixed = P_M1) then - Fixed_Subtest (0.11433, P_M1, "Positive Fixed: literal"); - else - Fixed_Subtest (0.11433, P_M2, "Positive Fixed: literal"); - end if; - - if (Negative_Fixed = N_M1) then - Fixed_Subtest (-467.13988, N_M1, "Negative Fixed: literal"); - else - Fixed_Subtest (-467.13988, N_M2, "Negative Fixed: literal"); - end if; - - - -- Now check that rounding is performed correctly for values between - -- multiples of the small, according to the value of 'Machine_Rounds: - - if My_Fix'Machine_Rounds then - Fixed_Subtest (Pos_Exactly_Half, P_M1, P_M2, "Positive Fixed: = half"); - Fixed_Subtest (More_Pos_Than_Half, P_M2, "Positive Fixed: > half"); - Fixed_Subtest (Less_Pos_Than_Half, P_M1, "Positive Fixed: < half"); - - Fixed_Subtest (Neg_Exactly_Half, N_M1, N_M2, "Negative Fixed: = half"); - Fixed_Subtest (More_Neg_Than_Half, N_M2, "Negative Fixed: > half"); - Fixed_Subtest (Less_Neg_Than_Half, N_M1, "Negative Fixed: < half"); - else - Fixed_Subtest (Pos_Exactly_Half, P_M1, "Positive Fixed: = half"); - Fixed_Subtest (More_Pos_Than_Half, P_M1, "Positive Fixed: > half"); - Fixed_Subtest (Less_Pos_Than_Half, P_M1, "Positive Fixed: < half"); - - Fixed_Subtest (Neg_Exactly_Half, N_M1, "Negative Fixed: = half"); - Fixed_Subtest (More_Neg_Than_Half, N_M1, "Negative Fixed: > half"); - Fixed_Subtest (Less_Neg_Than_Half, N_M1, "Negative Fixed: < half"); - end if; - - - Report.Result; -end C490002; |