bwBASIC/NBS2/P184.OUT

PROGRAM FILE 184: EXCEPTION - UNDERFLOW IN THE EVALUATION
        OF NUMERIC EXPRESSIONS IN THE FOR-STATEMENT.
    ANSI STANDARD 7.4, 7.6, 11.2

SECTION 184.1: EXCEPTION - UNDERFLOW IN THE EVALUATION
        OF NUMERIC EXPRESSIONS IN THE FOR-STATEMENT.

THIS SECTION TESTS THE EFFECT OF UNDERFLOW IN NUMERIC
EXPRESSIONS IN THE CONTEXT OF THE FOR STATEMENT.

TO PASS THIS TEST:

    1) AN UNDERFLOW EXCEPTION MAY BE REPORTED
       (NOT MANDATORY),

    2) ZERO MUST BE SUPPLIED AS THE VALUE OF THE 
       EXPRESSION, AND

    3) THE FOR-LOOP MUST EXECUTE 4 TIMES.

                   BEGIN TEST.

ABOUT TO EXECUTE:
   FOR I = .1 ^ 99999 TO 1E-36 STEP 3E-37

ITERATION      CONTROL-VARIABLE VALUES
COUNT          ACTUAL         SHOULD BE
 1              0              0 
 2              3.E-37         3.E-37 
 3              6.E-37         6.E-37 
 4              9.E-37         9.E-37 
EXITING LOOP.
                1.2E-36        1.2E-36 

*** TEST PASSED ***

                    END TEST.

END PROGRAM 184