gcc/testsuite/ada/acats/tests/c4/c45532g.ada

   1 -- C45532G.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 GREATER THAN OR
  30 --       EQUAL TO 0.5.
  31 --
  32 --     TEST CASES ARE:
  33 --       A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
  34 --       B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
  35 --       C) THE OPERATOR *, USING NO MODEL NUMBERS.
  36 --
  37 --     REPEAT FOR MINIMUM REQUIRED WORD LENGTHS OF 12, 16, 32 AND 48,
  38 --     WITH RANGE <, =, AND > THAN 1.0 AND
  39 --     WITH DELTA <, =, AND > THAN 1.0.
  40
  41 -- HISTORY:
  42 --     NTW 09/08/86 CREATED ORIGINAL TEST.
  43 --     RJW 11/05/86 REVISED COMMENTS.
  44 --     DHH 01/13/88 ADDED APPLICABILITY CRITERIA AND STANDARD HEADER.
  45 --     RDH 04/27/90 REVISED APPLICABILITY CRITERIA.
  46 --     BCB 10/03/90 REMOVED APPLICABILITY CRITERIA AND N/A => ERROR
  47 --                  LINE.  CHANGED EXTENSION FROM '.DEP' TO '.ADA'.
  48
  49 WITH REPORT;
  50 PROCEDURE C45532G IS
  51
  52      USE REPORT;
  53
  54      MIN_WORD_LENGTH : CONSTANT := 16;
  55      FULL_SCALE      : CONSTANT := 2 ** (MIN_WORD_LENGTH - 1);
  56      FORTH           : CONSTANT := FULL_SCALE / 4;
  57      RNG1            : CONSTANT := FULL_SCALE * 0.5;
  58      TYPE FX_0P5  IS DELTA 0.5 RANGE -RNG1 * 1 .. RNG1 * 1 - 0.5;
  59      TYPE FX_1    IS DELTA 1.0 RANGE -RNG1 * 2 .. RNG1 * 2 - 1.0;
  60      TYPE FX_RNG1 IS DELTA RNG1
  61                     RANGE -RNG1 * FULL_SCALE .. RNG1 * (FULL_SCALE - 1);
  62
  63 BEGIN TEST ("C45532G", "FIXED POINT OPERATOR ""*""" );
  64
  65      --------------------------------------------------
  66
  67      -- CASE A) THE OPERATOR *, A, B, AND A * B ALL MODEL NUMBERS.
  68
  69 A:   DECLARE
  70           A              : FX_0P5  := 0.0;
  71           B              : FX_1    := 0.0;
  72           RESULT_VALUE   : FX_RNG1 := 0.0;
  73           LOWEST_ACCEPTABLE_VALUE
  74                          : FX_RNG1 := FX_RNG1 (RNG1 * RNG1 / 4);
  75           HIGHEST_ACCEPTABLE_VALUE
  76                          : FX_RNG1 := FX_RNG1 (RNG1 * RNG1 / 4);
  77      BEGIN
  78           IF EQUAL (3, 3) THEN
  79                A := FX_0P5 (RNG1 / 2);            -- A MODEL NUMBER
  80                B := FX_1   (RNG1 / 2);            -- A MODEL NUMBER
  81           END IF;
  82
  83           RESULT_VALUE := FX_RNG1 (A * B);
  84
  85           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
  86              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
  87                FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
  88                     &  "WHEN A, B, AND A * B ARE ALL MODEL NUMBERS");
  89           END IF;
  90      END A;
  91
  92      --------------------------------------------------
  93
  94      -- CASE B) THE OPERATOR *, A, B MODEL NUMBERS A * B NOT.
  95
  96 B:   DECLARE
  97           A              : FX_0P5  := 0.0;
  98           B              : FX_0P5  := 0.0;
  99           RESULT_VALUE   : FX_RNG1 := 0.0;
 100           LOW_COUNT     : CONSTANT := FULL_SCALE / 16;
 101           HIGH_COUNT    : CONSTANT := LOW_COUNT + 1;
 102           LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
 103                                    := FX_RNG1 (RNG1 * LOW_COUNT);
 104           HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
 105                                    := FX_RNG1 (RNG1 * HIGH_COUNT);
 106      BEGIN
 107           IF EQUAL (3, 3) THEN
 108                A := FX_0P5 (0.5 * (FORTH + 1) );  -- A MODEL NUMBER
 109                B := FX_0P5 (0.5 * (FORTH * 2) );  -- A MODEL NUMBER
 110           END IF;
 111
 112           RESULT_VALUE := FX_RNG1 (A * B);
 113
 114           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
 115              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
 116                FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
 117                     &  "WHEN A, B MODEL NUMBERS A * B NOT");
 118           END IF;
 119      END B;
 120
 121      --------------------------------------------------
 122
 123      -- CASE C) THE OPERATOR *, USING NO MODEL NUMBERS
 124
 125 C:   DECLARE
 126           A              : FX_1    := 0.0;
 127           B              : FX_1    := 0.0;
 128           RESULT_VALUE   : FX_RNG1    := 0.0;
 129           LOW_COUNT     : CONSTANT := FULL_SCALE / 32 - 1;
 130           HIGH_COUNT    : CONSTANT := FULL_SCALE / 32 + 1;
 131           LOWEST_ACCEPTABLE_VALUE  :  FX_RNG1
 132                                    := FX_RNG1 (RNG1 * LOW_COUNT);
 133           HIGHEST_ACCEPTABLE_VALUE :  FX_RNG1
 134                                    := FX_RNG1 (RNG1 * HIGH_COUNT);
 135      BEGIN
 136           IF EQUAL (3, 3) THEN
 137                A := FX_1 (0.5 * (FORTH + 1) );    -- NOT MODEL NUMBER
 138                B := FX_1 (0.5 * (FORTH - 1) );    -- NOT MODEL NUMBER
 139           END IF;
 140
 141           RESULT_VALUE := FX_RNG1 (A * B);
 142
 143           IF    (RESULT_VALUE < LOWEST_ACCEPTABLE_VALUE)
 144              OR (RESULT_VALUE > HIGHEST_ACCEPTABLE_VALUE) THEN
 145                FAILED ("RESULT OF ""*"" OUTSIDE RESULT MODEL INTERVAL "
 146                     &  "WHEN USING NO MODEL NUMBERS");
 147           END IF;
 148      END C;
 149
 150      --------------------------------------------------
 151
 152
 153      RESULT;
 154
 155 END C45532G;