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1 149 jeremybenn
-- C45323A.ADA
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--                             Grant of Unlimited Rights
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--
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--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained 
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--     unlimited rights in the software and documentation contained herein.
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--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making 
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--     this public release, the Government intends to confer upon all 
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--     recipients unlimited rights  equal to those held by the Government.  
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--     These rights include rights to use, duplicate, release or disclose the 
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--     released technical data and computer software in whole or in part, in 
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--     any manner and for any purpose whatsoever, and to have or permit others 
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--     to do so.
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--
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--                                    DISCLAIMER
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--
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--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED 
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--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE 
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--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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--     PARTICULAR PURPOSE OF SAID MATERIAL.
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--*
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-- OBJECTIVE:
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--     CHECK THAT THE NONASSOCIATIVITY OF REAL ARITHMETIC IS PRESERVED
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--     FOR FLOATING POINT PRECISION 5, EVEN WHEN OPTIMIZATION WOULD
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--     BENEFIT IF FLOATING POINT ADDITION WERE ASSOCIATIVE.
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-- HISTORY:
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--     JET 08/10/88  CREATED ORIGINAL TEST.
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WITH REPORT; USE REPORT;
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PROCEDURE C45323A IS
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     TYPE FLOAT5 IS DIGITS 5;
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     A, B, C, D, E : FLOAT5;
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     FUNCTION IDENT(F : FLOAT5) RETURN FLOAT5 IS
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     BEGIN
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          RETURN F * FLOAT5(IDENT_INT(1));
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     END IDENT;
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BEGIN
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     TEST ("C45323A", "CHECK THAT THE NONASSOCIATIVITY OF REAL " &
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                      "ARITHMETIC IS PRESERVED FOR FLOATING POINT " &
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                      "PRECISION 5, EVEN WHEN OPTIMIZATION WOULD " &
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                      "BENEFIT IF FLOATING POINT ADDITION WERE " &
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                      "ASSOCIATIVE");
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     B := 2#0.1010_1010_1010_1010_10#E3;
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     A := -B;
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     C := 2#0.1000_0000_0000_0000_00#E-18;
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     D := B + C;
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     E := A + B + C;
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     IF IDENT(A) + IDENT(B) /= 0.0 THEN
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          FAILED("INCORRECT VALUE OF A + B");
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     END IF;
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     IF IDENT(E) /= IDENT(C) THEN
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          FAILED("C DOES NOT EQUAL E");
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     END IF;
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     RESULT;
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END C45323A;

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