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-- C4A012B.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 CONSTRAINT_ERROR IS RAISED FOR
-- A UNIVERSAL_REAL EXPRESSION IF DIVISION BY ZERO IS ATTEMPTED.
-- CHECK THAT CONSTRAINT_ERROR IS RAISED FOR
-- 0.0 ** (-1) (OR ANY OTHER NEGATIVE EXPONENT VALUE).
-- HISTORY:
-- RJW 09/04/86 CREATED ORIGINAL TEST.
-- CJJ 09/04/87 ADDED PASS MESSAGE FOR RAISING NUMERIC_ERROR;
-- MODIFIED CODE TO PREVENT COMPILER OPTIMIZING
-- OUT THE TEST.
-- JET 12/31/87 ADDED MORE CODE TO PREVENT OPTIMIZATION.
-- MRM 03/30/93 REMOVED NUMERIC_ERROR FOR 9X COMPATIBILITY
-- JRL 02/29/96 Added code to check for value of Machine_Overflows; if
-- False, test is inapplicable.
WITH REPORT; USE REPORT;
PROCEDURE C4A012B IS
F : FLOAT;
I3 : INTEGER := -3;
SUBTYPE SINT IS INTEGER RANGE -10 .. 10;
SI5 : CONSTANT SINT := -5;
FUNCTION IDENT (X:FLOAT) RETURN FLOAT IS
BEGIN
IF EQUAL (3,3) THEN
RETURN X;
ELSE
RETURN 1.0;
END IF;
END IDENT;
BEGIN
TEST ( "C4A012B", "CHECK THAT CONSTRAINT_ERROR " &
"IS RAISED FOR " &
"0.0 ** (-1) (OR ANY OTHER NEGATIVE EXPONENT " &
"VALUE)" );
IF FLOAT'MACHINE_OVERFLOWS = FALSE THEN
REPORT.NOT_APPLICABLE ("Float'Machine_Overflows = False");
ELSE
BEGIN
F := IDENT (0.0) ** (-1);
FAILED ( "THE EXPRESSION '0.0 ** (-1)' DID NOT RAISE " &
"AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 1");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** (-1)' RAISED THE " &
"WRONG EXCEPTION" );
END;
BEGIN
F := 0.0 ** (IDENT_INT (-1));
FAILED ( "THE EXPRESSION '0.0 ** (IDENT_INT (-1))' DID " &
"NOT RAISE AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 2");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** (IDENT_INT (-1))' " &
"RAISED THE WRONG EXCEPTION" );
END;
BEGIN
F := 0.0 ** (INTEGER'POS (IDENT_INT (-1)));
FAILED ( "THE EXPRESSION '0.0 ** " &
"(INTEGER'POS (IDENT_INT (-1)))' DID " &
"NOT RAISE AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 3");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** " &
"(INTEGER'POS (IDENT_INT (-1)))' RAISED " &
"THE WRONG EXCEPTION" );
END;
BEGIN
F := IDENT(0.0) ** I3;
FAILED ( "THE EXPRESSION '0.0 ** I3' DID NOT RAISE " &
"AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 4");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** I3' RAISED THE " &
"WRONG EXCEPTION" );
END;
BEGIN
F := 0.0 ** (IDENT_INT (I3));
FAILED ( "THE EXPRESSION '0.0 ** (IDENT_INT (I3))' DID " &
"NOT RAISE AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 5");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** (IDENT_INT (I3))' " &
"RAISED THE WRONG EXCEPTION" );
END;
BEGIN
F := IDENT (0.0) ** SI5;
FAILED ( "THE EXPRESSION '0.0 ** SI5' DID NOT RAISE " &
"AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 6");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** SI5' RAISED THE " &
"WRONG EXCEPTION" );
END;
BEGIN
F := 0.0 ** (IDENT_INT (SI5));
FAILED ( "THE EXPRESSION '0.0 ** (IDENT_INT (SI5))' DID " &
"NOT RAISE AN EXCEPTION" );
IF EQUAL ( INTEGER(F), INTEGER(F) ) THEN
COMMENT ("SHOULDN'T BE HERE!");
END IF;
EXCEPTION
WHEN CONSTRAINT_ERROR =>
COMMENT ("CONSTRAINT_ERROR RAISED - 7");
WHEN OTHERS =>
FAILED ( "THE EXPRESSION '0.0 ** (IDENT_INT (SI5))' " &
"RAISED THE WRONG EXCEPTION" );
END;
END IF;
RESULT;
END C4A012B;
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