Metrohm viva 1.0 Manual - Manual (Page 53)

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2 General program functions
viva 1.0
￭￭￭￭￭￭￭￭ 41
2.3.4.4 Relational operators
2.3.4.4.1 Equal to
Dialog window: Formula editor ▶ Operators/Functions
Syntax
Operand1 = 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).
Examples
Oper-
and1 Oper-
and2 Result Example Remark
Operands of the same type:
Number Number Number 5 = 5 --> 1
4 = 5 --> 0
–
Text Text Number "Metrohm" = "AG" --> 0
"aG" = "AG" --> 0
When making a comparison between two
texts, the ASCII value of the character string
is compared (see Chapter 2.3.4.10, page
65). Attention: Uppercase and lowercase
letters have different values!
Time Time Number Time(1998;04;06) =
Time(1964;02;03) --> 0 (see Chapter 2.3.4.6.2, page 53)
Operands of a different type:
Number Text Number 1.2 = "1.2" --> 11.2 =
"Metrohm" --> 0 Before the relational operation, the Number
is converted to Text, afterwards the texts are
compared according to ASCII value (see
Chapter 2.3.4.10, page 65).
Text Number Number "Metrohm" = 1.2 --> 0 The same rules apply here as for the previous
operation.
Number Time Number 2.0 = Time(1999;10;07) -->
0 Before the relational operation, the operand
of the Date/Time type is converted to a
Number. During execution of the operation,
the exact value is always used after this con-
version, even if maximum 5 places after the
comma can be displayed (see Chapter
2.3.4.7.5, page 58).
Time Number Number Time(1999;10;7) = 2.0 --> 0 The same rules apply here as for the previous
operation.