----------------------------------------------------------------
-- Testing runtime system.
-- This group of checks will produce 12-16 lines of output of the form
-- 
-- --!!! <description of feature being tested>
-- 
-- It may also produce output that looks like this:
-- 
--   ./hugs +q -pHugs:  test/???.hs < test/???.input
--   expected stdout not matched by reality
--   *** test/???.output  Fri Jul 11 13:25:27 1997
--   --- /tmp/runtest3584.3  Fri Jul 11 15:55:13 1997
--   ***************
--   *** 1,3 ****
--     ...
--   | Hugs:\"[0.0, 0.304693, 0.643501, 1.5708]\"
--     ...
--   --- 1,3 ----
--     ...
--   | Hugs:\"[0.0, 0.30469323452, 0.643503234321, 1.5708234234]\"
--     ...
-- 
-- This is harmless and reflects variations in the accuracy of floating
-- point representation, calculations and printing.
-- 
-- You should report a problem if any other output is generated or if
-- the size of the floating point errors seem excessively large.
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