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1 12 jlechner
-- C45531O.DEP
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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 OPERATOR "*" PRODUCES CORRECT RESULTS
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--     FOR MIXED FIXED POINT AND INTEGER TYPES USING 4 SUBTESTS.
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--       THIS TEST REQUIRES MIN_WORD_LENGTH = 48.
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--       THIS TEST USES VALUES OF DELTA WHICH ARE GREATER THAN OR
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--       EQUAL TO 0.5.
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--
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--     TEST CASES ARE:
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--       A) INTEGER * FIXED WHEN ALL VALUES ARE MODEL NUMBERS.
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--       B) FIXED * INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
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--       C) INTEGER * FIXED FOR NON-MODEL NUMBERS.
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--       D) FIXED * INTEGER FOR NON-MODEL NUMBERS.
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--
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--     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
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--     WITH RANGE <, =, AND > THAN 1.0 AND
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--     WITH DELTA <, =, AND > THAN 1.0.
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-- APPLICABILITY CRITERIA:
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--     THIS TEST IS APPLICABLE FOR IMPLEMENTATIONS WHICH HAVE A
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--     'MAX_MANTISSA OF 47 OR GREATER.
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--     IF 'MAX_MANTISSA >= 47 IS NOT SUPPORTED THEN THE DECLARATION OF
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--     'TYPE FX_OP5' MUST BE REJECTED.
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-- HISTORY:
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--     NTW 09/08/86 CREATED ORIGINAL TEST.
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--     RJW 11/05/86 REVISED COMMENTS.
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--     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
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--     BCB 04/27/90 REVISED APPLICABILITY CRITERIA.
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WITH REPORT;
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PROCEDURE C45531O IS
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     USE REPORT;
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     MIN_WORD_LENGTH : CONSTANT := 48;
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     FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
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     FORTH           : CONSTANT := FULL_SCALE / 4;
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     RNG1            : CONSTANT := FULL_SCALE * 0.5;
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     TYPE FX_0P5  IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5;
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                                                        -- N/A => ERROR.
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     TYPE FX_1    IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0;
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     TYPE FX_RNG1 IS DELTA RNG1
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                    RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1);
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BEGIN TEST ("C45531O", "MIXED FIXED POINT AND INTEGER ""*"" "
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                    &  "FOR DELTA <, =, > 1.0");
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     --------------------------------------------------
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     -- CASE A) INTEGER * FIXED WHEN ALL VALUES ARE MODEL NUMBERS.
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A:   DECLARE
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          A              : INTEGER := 0;
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          B              : FX_0P5  := 0.0;
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          RESULT_VALUE   : FX_0P5  := 0.0;
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          LOWEST_ACCEPTABLE_VALUE  : FX_0P5 := FX_0P5 (7.5);
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          HIGHEST_ACCEPTABLE_VALUE : FX_0P5 := FX_0P5 (7.5);
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     BEGIN
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          IF EQUAL (3, 3) THEN
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               A := 3;
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               B := FX_0P5 (2.5);               -- A MODEL NUMBER
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          END IF;
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          RESULT_VALUE := A * B;
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          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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                    &  "FOR INTEGER * FIXED "
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                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
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          END IF;
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     END A;
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     --------------------------------------------------
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     -- CASE B) FIXED * INTEGER WHEN ALL VALUES ARE MODEL NUMBERS.
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B:   DECLARE
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          A              : FX_1    := 0.0;
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          B              : INTEGER := 0;
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          RESULT_VALUE   : FX_1    := 0.0;
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          LOWEST_ACCEPTABLE_VALUE  : FX_1 := FX_1 (3 * FORTH);
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          HIGHEST_ACCEPTABLE_VALUE : FX_1 := FX_1 (3 * FORTH);
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     BEGIN
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          IF EQUAL (3, 3) THEN
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               A := FX_1 (FULL_SCALE / 8);        -- A MODEL NUMBER
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               B := 6;
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          END IF;
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          RESULT_VALUE := A * B;
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          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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                    &  "FOR FIXED * INTEGER "
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                    &  "WHEN ALL VALUES ARE MODEL NUMBERS");
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          END IF;
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     END B;
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     --------------------------------------------------
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     -- CASE C) INTEGER * FIXED FOR NON-MODEL NUMBERS.
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C:   DECLARE
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          A              : INTEGER := 0;
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          B              : FX_RNG1 := 0.0;
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          RESULT_VALUE   : FX_RNG1 := 0.0;
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          LOW_COUNT     : CONSTANT := (3 * (FORTH + 0) );
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          HIGH_COUNT    : CONSTANT := (3 * (FORTH + 1) );
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          LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
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                                   := FX_RNG1 (RNG1 * LOW_COUNT );
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          HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
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                                   := FX_RNG1 (RNG1 * HIGH_COUNT);
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     BEGIN
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          IF EQUAL (3, 3) THEN        -- B NOT A MODEL NUMBER
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               A := 3;
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               B := FX_RNG1 (RNG1 * FORTH + 0.5);
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          END IF;
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          RESULT_VALUE := A * B;
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          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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                    &  "FOR INTEGER * FIXED FOR NON-MODEL NUMBERS");
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          END IF;
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     END C;
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     --------------------------------------------------
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     -- CASE D) FIXED * INTEGER FOR NON-MODEL NUMBERS.
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D:   DECLARE
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          A              : FX_RNG1 := 0.0;
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          B              : INTEGER := 0;
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          RESULT_VALUE   : FX_RNG1 := 0.0;
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          LOW_COUNT     : CONSTANT := (3 * (FORTH + 0) );
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          HIGH_COUNT    : CONSTANT := (3 * (FORTH + 1) );
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          LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
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                                   := FX_RNG1 (RNG1 * LOW_COUNT );
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          HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
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                                   := FX_RNG1 (RNG1 * HIGH_COUNT);
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     BEGIN
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          IF EQUAL (3, 3) THEN        -- A NOT A MODEL NUMBER
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               A := FX_RNG1 (RNG1 * FORTH + 0.5);
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               B := 3;
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          END IF;
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          RESULT_VALUE := A * B;
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          IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
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             OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
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               FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
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                    &  "FOR FIXED * INTEGER FOR NON-MODEL NUMBERS");
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          END IF;
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     END D;
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     --------------------------------------------------
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     RESULT;
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END C45531O;

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