old-autovect-branch/gcc/testsuite/ada/acats/tests/c4/c45532e.ada

   1 -- C45532E.ADA
   2
   3 --                             Grant of Unlimited Rights
   4 --
   5 --     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
   6 --     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
   7 --     unlimited rights in the software and documentation contained herein.
   8 --     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making
   9 --     this public release, the Government intends to confer upon all
  10 --     recipients unlimited rights  equal to those held by the Government.
  11 --     These rights include rights to use, duplicate, release or disclose the
  12 --     released technical data and computer software in whole or in part, in
  13 --     any manner and for any purpose whatsoever, and to have or permit others
  14 --     to do so.
  15 --
  16 --                                    DISCLAIMER
  17 --
  18 --     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
  19 --     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
  20 --     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
  21 --     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
  22 --     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
  23 --     PARTICULAR PURPOSE OF SAID MATERIAL.
  24 --*
  25 -- OBJECTIVE:
  26 --     CHECK THAT THE OPERATOR "*" PRODUCES CORRECT RESULTS
  27 --     FOR FIXED POINT TYPES USING 3 SUBTESTS.
  28 --       THIS TEST REQUIRES MIN_WORD_LENGTH = 16.
  29 --       THIS TEST USES VALUES OF DELTA WHICH ARE LESS THAN 0.5.
  30 --
  31 --     TEST CASES ARE:
  32 --       A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
  33 --       B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
  34 --       C) THE OPERATOR *, USING NO MODEL NUMBERS.
  35 --
  36 --     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
  37 --     WITH RANGE <, =, AND > THAN 1.0 AND
  38 --     WITH DELTA <, =, AND > THAN 1.0.
  39
  40 -- HISTORY:
  41 --     NTW 09/08/86 CREATED ORIGINAL TEST.
  42 --     RJW 11/05/86 REVISED COMMENTS.
  43 --     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
  44 --     RDH 04/27/90 REVISED APPLICABILITY CRITERIA.
  45 --     BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
  46 --                  LINE.  CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
  47
  48 WITH REPORT;
  49 PROCEDURE C45532E IS
  50
  51      USE REPORT;
  52
  53      MIN_WORD_LENGTH : CONSTANT := 16;
  54      FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
  55      FORTH           : CONSTANT := FULL_SCALE / 4;
  56      DEL1            : CONSTANT := 0.5 / FULL_SCALE;
  57      TYPE FX_0P5 IS DELTA DEL1 * 1 RANGE -0.5 .. 0.5 - DEL1 * 1;
  58      TYPE FX_1   IS DELTA DEL1 * 2 RANGE -1.0 .. 1.0 - DEL1 * 2;
  59      TYPE FX_2   IS DELTA DEL1 * 4 RANGE -2.0 .. 2.0 - DEL1 * 4;
  60
  61 BEGIN TEST ("C45532E", "FIXED POINT OPERATOR ""*""" );
  62
  63      --------------------------------------------------
  64
  65      -- CASE A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
  66
  67 A:   DECLARE
  68           A              : FX_0P5  := 0.0;
  69           B              : FX_2    := 0.0;
  70           RESULT_VALUE   : FX_1    := 0.0;
  71           LOWEST_ACCEPTABLE_VALUE  : FX_1 := FX_1 (0.125);
  72           HIGHEST_ACCEPTABLE_VALUE : FX_1 := FX_1 (0.125);
  73      BEGIN
  74           IF EQUAL (3, 3) THEN
  75                A := FX_0P5 (0.25);                -- A MODEL NUMBER
  76                B := FX_2   (0.50);                -- A MODEL NUMBER
  77           END IF;
  78
  79           RESULT_VALUE := FX_1 (A * B);
  80
  81           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
  82              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
  83                FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
  84                     &  "WHEN A, B, AND A * B ARE ALL MODEL NUMBERS");
  85           END IF;
  86      END A;
  87
  88      --------------------------------------------------
  89
  90      -- CASE B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
  91
  92 B:   DECLARE
  93           A              : FX_0P5  := 0.0;
  94           B              : FX_1    := 0.0;
  95           RESULT_VALUE   : FX_2    := 0.0;
  96           LOW_COUNT     : CONSTANT := FULL_SCALE / 64;
  97           HIGH_COUNT    : CONSTANT := LOW_COUNT + 1;
  98           LOWEST_ACCEPTABLE_VALUE  :  FX_2
  99                                    := FX_2 (4 * DEL1 * LOW_COUNT );
 100           HIGHEST_ACCEPTABLE_VALUE :  FX_2
 101                                    := FX_2 (4 * DEL1 * HIGH_COUNT);
 102      BEGIN
 103           IF EQUAL (3, 3) THEN
 104                A := FX_0P5 (DEL1 * (FORTH + 1) ); -- A MODEL NUMBER
 105                B := FX_1   (DEL1 * (FORTH * 2) ); -- A MODEL NUMBER
 106           END IF;
 107
 108           RESULT_VALUE := FX_2 (A * B);
 109
 110           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
 111              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
 112                FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
 113                     &  "WHEN A, B MODEL NUMBERS A * B NOT");
 114           END IF;
 115      END B;
 116
 117      --------------------------------------------------
 118
 119      -- CASE C) THE OPERATOR *, USING NO MODEL NUMBERS
 120
 121 C:   DECLARE
 122           A              : FX_1    := 0.0;
 123           B              : FX_1    := 0.0;
 124           RESULT_VALUE   : FX_2    := 0.0;
 125           LOW_COUNT     : CONSTANT := FULL_SCALE / 128 - 1;
 126           HIGH_COUNT    : CONSTANT := FULL_SCALE / 128 + 1;
 127           LOWEST_ACCEPTABLE_VALUE  :  FX_2
 128                                    := FX_2 (4 * DEL1 * LOW_COUNT );
 129           HIGHEST_ACCEPTABLE_VALUE :  FX_2
 130                                    := FX_2 (4 * DEL1 * HIGH_COUNT);
 131      BEGIN
 132           IF EQUAL (3, 3) THEN
 133                A := FX_1 (DEL1 * (FORTH + 1) );   -- NOT MODEL NUMBER
 134                B := FX_1 (DEL1 * (FORTH - 1) );   -- NOT MODEL NUMBER
 135           END IF;
 136
 137           RESULT_VALUE := FX_2 (A * B);
 138
 139           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
 140              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
 141                FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
 142                     &  "WHEN USING NO MODEL NUMBERS");
 143           END IF;
 144      END C;
 145
 146      --------------------------------------------------
 147
 148
 149      RESULT;
 150
 151 END C45532E;