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-- C45532C.ADA
-- 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 THE OPERATOR "*" PRODUCES CORRECT RESULTS
-- FOR FIXED POINT TYPES USING 3 SUBTESTS.
-- THIS TEST REQUIRES MIN_WORD_LENGTH = 12.
-- THIS TEST USES VALUES OF DELTA WHICH ARE GREATER THAN OR
-- EQUAL TO 0.5.
--
-- TEST CASES ARE:
-- A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
-- B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
-- C) THE OPERATOR *, USING NO MODEL NUMBERS.
--
-- REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
-- WITH RANGE <, =, AND > THAN 1.0 AND
-- WITH DELTA <, =, AND > THAN 1.0.
-- HISTORY:
-- NTW 09/08/86 CREATED ORIGINAL TEST.
-- RJW 11/05/86 REVISED COMMENTS.
-- DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
-- RDH 04/27/90 REVISED APPLICABILITY CRITERIA.
-- BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
-- LINE. CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
WITH REPORT;
PROCEDURE C45532C IS
USE REPORT;
MIN_WORD_LENGTH : CONSTANT := 12;
FULL_SCALE : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
FORTH : CONSTANT := FULL_SCALE / 4;
RNG1 : CONSTANT := FULL_SCALE * 0.5;
TYPE FX_0P5 IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5;
TYPE FX_1 IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0;
TYPE FX_RNG1 IS DELTA RNG1
RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1);
BEGIN TEST ("C45532C", "FIXED POINT OPERATOR ""*"" "
& "FOR DELTA <, =, AND > 1.0");
--------------------------------------------------
-- CASE A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
A: DECLARE
A : FX_0P5 := 0.0;
B : FX_1 := 0.0;
RESULT_VALUE : FX_RNG1 := 0.0;
LOWEST_ACCEPTABLE_VALUE
: FX_RNG1 := FX_RNG1 (RNG1 * RNG1 / 4);
HIGHEST_ACCEPTABLE_VALUE
: FX_RNG1 := FX_RNG1 (RNG1 * RNG1 / 4);
BEGIN
IF EQUAL (3, 3) THEN
A := FX_0P5 (RNG1 / 2); -- A MODEL NUMBER
B := FX_1 (RNG1 / 2); -- A MODEL NUMBER
END IF;
RESULT_VALUE := FX_RNG1 (A * B);
IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
& "WHEN A, B, AND A * B ARE ALL MODEL NUMBERS");
END IF;
END A;
--------------------------------------------------
-- CASE B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
B: DECLARE
A : FX_0P5 := 0.0;
B : FX_0P5 := 0.0;
RESULT_VALUE : FX_RNG1 := 0.0;
LOW_COUNT : CONSTANT := FULL_SCALE / 16;
HIGH_COUNT : CONSTANT := LOW_COUNT + 1;
LOWEST_ACCEPTABLE_VALUE : FX_RNG1
:= FX_RNG1 (RNG1 * LOW_COUNT);
HIGHEST_ACCEPTABLE_VALUE : FX_RNG1
:= FX_RNG1 (RNG1 * HIGH_COUNT);
BEGIN
IF EQUAL (3, 3) THEN
A := FX_0P5 (0.5 * (FORTH + 1) ); -- A MODEL NUMBER
B := FX_0P5 (0.5 * (FORTH * 2) ); -- A MODEL NUMBER
END IF;
RESULT_VALUE := FX_RNG1 (A * B);
IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
& "WHEN A, B MODEL NUMBERS A * B NOT");
END IF;
END B;
--------------------------------------------------
-- CASE C) THE OPERATOR *, USING NO MODEL NUMBERS
C: DECLARE
A : FX_1 := 0.0;
B : FX_1 := 0.0;
RESULT_VALUE : FX_RNG1 := 0.0;
LOW_COUNT : CONSTANT := FULL_SCALE / 32 - 1;
HIGH_COUNT : CONSTANT := FULL_SCALE / 32 + 1;
LOWEST_ACCEPTABLE_VALUE : FX_RNG1
:= FX_RNG1 (RNG1 * LOW_COUNT);
HIGHEST_ACCEPTABLE_VALUE : FX_RNG1
:= FX_RNG1 (RNG1 * HIGH_COUNT);
BEGIN
IF EQUAL (3, 3) THEN
A := FX_1 (0.5 * (FORTH + 1) ); -- NOT MODEL NUMBER
B := FX_1 (0.5 * (FORTH - 1) ); -- NOT MODEL NUMBER
END IF;
RESULT_VALUE := FX_RNG1 (A * B);
IF (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
& "WHEN USING NO MODEL NUMBERS");
END IF;
END C;
--------------------------------------------------
RESULT;
END C45532C;
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