Metrohm tiamo 1.1 Manual - Manual (Page 48)

20 General program functions
• Text
Text must be introduced and terminated with inverted commas " (e.g.
"My text" ).
• Variables
Variables must be introduced and terminated with an inverted comma
' (e.g. 'MV.MyVariable' ).
• Time
Time information must always be entered by using the function
Time().
Entries using the function keys
Mathematical operators and brackets can be easily inserted in the formula
with the corresponding buttons. A space is inserted automatically before
and after the character.
Addition Equal to Logical AND
Subtraction Larger than Logical OR
Multiplication Smaller than Round brackets
Division Unequal Curly brackets e.g. for end point defini-
tion (e.g.
'DET pH 1.EP{1}.VOL' )
Exponentiation Smaller than
or equal to
Undo last action
Larger than or
equal to Restore last action
Input via selection
The item selected in the fields Variables or Operators can be entered in the
formula with a double-click or .
2.4.3 Arithmetic algorithms
Number format
The standard IEEE 754 (1985) for binary floating-point arithmetic has been
implemented in the software as "double precision" (64Bit).
Rounding method
Measured values and results are displayed rounded, depending on user
settings. For that purpose, arithmetic rounding is carried out according to a
method known as "Banker's rounding" (rounding towrds the nearest evan
number). With this method,
1, 2, 3, 4 are always rounded down and 6, 7, 8,
9 always rounded up. 5 is always rounded towards the even neighbor, so it
is rounded down if the neigbor is even (incl. 0) and rounded up if it is odd.
Examples
2.33 gets 2.3
2.35 gets 2.4
2.45 gets 2.4