embedded-5_0-branch/gcc/testsuite/ada/acats/tests/c4/c45523a.ada

   1 -- C45523A.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 --     FOR FLOATING POINT TYPES, IF MACHINE_OVERFLOWS IS TRUE AND
  27 --     EITHER THE RESULT OF MULTIPLICATION LIES OUTSIDE THE RANGE OF THE
  28 --     BASE TYPE, OR AN ATTEMPT IS MADE TO DIVIDE BY ZERO, THEN
  29 --     CONSTRAINT_ERROR IS RAISED.  THIS TESTS
  30 --     DIGITS 5.
  31
  32
  33 -- *** NOTE: This test has been modified since ACVC version 1.11 to    -- 9X
  34 -- ***       remove incompatibilities associated with the transition   -- 9X
  35 -- ***       to Ada 9X.                                                -- 9X
  36 -- ***                                                                 -- 9X
  37
  38 -- HISTORY:
  39 --     BCB 02/09/88  CREATED ORIGINAL TEST.
  40 --     MRM 03/30/93  REMOVED NUMERIC_ERROR FOR 9X COMPATIBILITY
  41 --     KAS 11/14/95  DELETED USAGE OF 'SAFE_LARGE
  42 --     KAS 11/30/95  GOT IT RIGHT THIS TIME
  43
  44 WITH REPORT; USE REPORT;
  45
  46 PROCEDURE C45523A IS
  47
  48      TYPE FLT IS DIGITS 5;
  49
  50      F : FLT;
  51
  52      FUNCTION IDENT_FLT(X : FLT) RETURN FLT IS
  53      BEGIN
  54           IF EQUAL(3,3) THEN
  55                RETURN X;
  56           ELSE
  57                RETURN 0.0;
  58           END IF;
  59      END IDENT_FLT;
  60
  61      FUNCTION EQUAL_FLT(ONE, TWO : FLT) RETURN BOOLEAN IS
  62      BEGIN
  63           RETURN ONE = TWO * FLT (IDENT_INT(1));
  64      END EQUAL_FLT;
  65
  66 BEGIN
  67      TEST ("C45523A", "FOR FLOATING POINT TYPES, IF MACHINE_" &
  68                       "OVERFLOWS IS TRUE AND EITHER THE RESULT OF " &
  69                       "MULTIPLICATION LIES OUTSIDE THE RANGE OF THE " &
  70                       "BASE TYPE, OR AN ATTEMPT IS MADE TO DIVIDE BY " &
  71                       "ZERO, THEN CONSTRAINT_ERROR IS RAISED." &
  72                       "THIS TESTS DIGITS 5");
  73
  74
  75      IF FLT'MACHINE_OVERFLOWS THEN
  76           BEGIN
  77                F := (FLT'BASE'LAST) * IDENT_FLT (2.0);
  78                FAILED ("CONSTRAINT_ERROR WAS NOT RAISED FOR MULTIPLICATION");
  79                IF EQUAL_FLT(F,F**IDENT_INT(1)) THEN
  80                     COMMENT ("DON'T OPTIMIZE F");
  81                END IF;
  82           EXCEPTION
  83                WHEN CONSTRAINT_ERROR =>
  84                     COMMENT ("CONSTRAINT_ERROR WAS RAISED FOR " &
  85                              "MULTIPLICATION");
  86                WHEN OTHERS =>
  87                     FAILED ("AN EXCEPTION OTHER THAN " &
  88                             "CONSTRAINT_ERROR WAS RAISED FOR " &
  89                             "MULTIPLICATION");
  90           END;
  91           BEGIN
  92                F := (FLT'LAST) / IDENT_FLT (0.0);
  93                FAILED ("CONSTRAINT_ERROR WAS NOT RAISED FOR DIVISION BY ZERO");
  94                IF EQUAL_FLT(F,F**IDENT_INT(1)) THEN
  95                     COMMENT ("DON'T OPTIMIZE F");
  96                END IF;
  97           EXCEPTION
  98                WHEN CONSTRAINT_ERROR =>
  99                     COMMENT ("CONSTRAINT_ERROR WAS RAISED FOR " &
 100                              "DIVISION BY ZERO");
 101                WHEN OTHERS =>
 102                     FAILED ("AN EXCEPTION OTHER THAN CONSTRAINT_ERROR " &
 103                             "WAS RAISED FOR DIVISION BY ZERO");
 104           END;
 105      ELSE
 106           NOT_APPLICABLE ("THIS TEST IS NOT APPLICABLE DUE TO " &
 107                           "MACHINE_OVERFLOWS BEING FALSE");
 108      END IF;
 109
 110      RESULT;
 111 END C45523A;