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FORTRAN Concepts
2-8
Fig.
2w$
·.type,. Length,
andJnterpretatbin
o~(O~1**QP2)
As these figures indicate, mixed-mode arithmetic
is
done
by converting
both
operands
to the same type (the type
of
the result) before performing the
operation.
This conversion
is
unnecessary when a real
number
is
raised to
an
integer power.
In the case
of
an
integer divided by
another
integer, the remainder
is
truncated.
The
value
of
1/3
is
0
The
value
of
8/3
is
2
The
value
of
-8/3
is
-2
If
the magnitude
of
an
arithmetic result
is
too
large for the processor
to
represent in
the
number
of
bytes shown
in
these figures, the result
is
undefined. See section
F.I.
2.2.4.3 Relational Expressions
Relational expressions
compare
two arithmetic
or
two
character
expressions
and
return a
TRUE
or
FALSE
result
of
type logical.
2.2.4.3.1 Relational
Operators.
The relational
operators
are:
Operator
.LT.
.LE.
.EQ.
.NE.
.GT.
.GE.
Meaning
Less
than
Less
than
or
equal
Equal
Not
equal
Greater
than
Greater
than
or
equal
FORTRAN-80