-- C45532O.DEP -- 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 = 48. -- 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. -- APPLICABILITY CRITERIA: -- THIS TEST IS APPLICABLE FOR IMPLEMENTATIONS WHICH HAVE A -- 'MAX_MANTISSA OF 47 OR GREATER. -- IF 'MAX_MANTISSA >= 47 IS NOT SUPPORTED THEN THE DECLARATION OF -- 'TYPE FX_OP5' MUST BE REJECTED. -- 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. WITH REPORT; PROCEDURE C45532O IS USE REPORT; MIN_WORD_LENGTH : CONSTANT := 48; 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; -- N/A => ERROR. 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 ("C45532O", "FIXED POINT OPERATOR ""*""" ); -------------------------------------------------- -- 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 C45532O;