A caution here: since floating
point
numbers are only close approximations
of real numbers. an
argument
may
not
yield the exact INT
function
value vou
might
expect. For instance. consider a simple loop going from 2
to
4 by suc-
cessively adding one-tenth
1.1).
FOR
1=2
TO
4
STEP.1:?I:NEXT
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
3.1
3.2
3.3
3.4
3.49999999
3.59999999
3.69999999
3.79999999
3.89999999
3.99999999
READ'r'.
You
will
see
that
the six numbers 3.5 through 4 are represented only ap-
proximately. If these values were in an array
A(O)
through A(20). the
function
INT(A(20))
would
equal
3.
not
4
as
would
be
expected.
LOG
LOG
returns the
naturallogarithm.
or log
to
the base
e.
The value of e used
is
2.71828183.
Format:
LOG(arg)
where:
arg
tive.
152
is
a positive. non-zero number. variable. or ex-
pression.
An Illegal Quantity error message
is
issued if the argument
is
zero or nega-
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