Metrohm viva 1.0 (process analysis) - Manual (Page 53)

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2 General program functions
viva 1.0 (for Process analysis)
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2.3.4.3.2 OR
Dialog window: Formula editor ▶ Operators/Functions
Syntax
Operand1 OR Operand2
The operands can be entered either directly or as a variable and can be of
the Text, Number or Date/Time type. The result type is always a num-
ber (1 = true, 0 = false). The following cases are possible:
Operand1 Operand2 Result
1 1 1
0 1 1
1 0 1
0 0 0
Examples
Operand1 Operand2 Result Example Remark
Operands of the same type:
Number Number Number 5 OR 4 --> 1
4 OR 0 --> 1
Numbers greater than 1 are automati-
cally interpreted as 1 (true)
Text Text Number "Metrohm" OR "AG" --> 1
"" OR "Metrohm" --> 1
"" OR "" --> 0
An empty character string ("") is inter-
preted as 0 (false), everything else as 1
(true). The first operation therefore cor-
responds to 1 OR 1 --> 1
Time Time Number Time(1999;10;07) OR
Time(1964;02;03) --> 1 Time(): see Time(Date)
Operands of a different type: The operand which does not correspond to the result type is converted to the rele-
vant result type before the operation.
Number Text Number 1.2 OR "1.2" --> 1
0 OR "" --> 1
Before the operation, the operand of
the Number type is converted to the
Text type, as a conversion from Text to
Number is not useful. During the sec-
ond operation, the 0 is therefore con-
verted to "0", which corresponds to the
logical value 1 (true), as every character
string that is not empty is interpreted as
1.
Text Number Number "Metrohm" OR 1.2 --> 1 The same rules apply here as for the pre-
vious operation.