5 less than or equal to, Less than or equal to – Metrohm tiBase 1.0 Manual User Manual

Page 53

Advertising
background image

■■■■■■■■■■■■■■■■■■■■■■

2 General program functions

tiBase 1.0

■■■■■■■■

45

2.4.4.4.5

Less than or equal to

Dialog window: Formula editor

Operators/Functions

Syntax
Operand1 <= Operand2

The operands can be entered either directly or as variables and can be of the
type Text, Number or Date/Time. The result type is always a number (1
= true, 0 = false).

Examples

Oper-
and1

Oper-
and2

Result

Example

Remark

Operands of the same type:

Number

Number

Number

5 <= 4 --> 0

4 <= 5 --> 1

-

Text

Text

Number

"Metrohm" <= "AG" --> 0

When making a comparison between two
texts the ASCII value of the character
sequence is compared (see Chapter
2.4.4.10, page 65)
.
Attention: Uppercase
and lowercase letters have different values!

Time

Time

Number

Time(1998;04;06) <=
Time(1964;02;03) --> 0

(see Chapter 2.4.4.6.2, page 53)

Operands of a different type:

Number

Text

Number

2 <= "1.2" --> 01.2 <=
"Metrohm" --> 1

Before the relational operation, the Num-
ber
is converted to Text, afterwards the
texts are compared according to ASCII
value
(see Chapter 2.4.4.10, 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) -->
1

Before the comparison, the operand is con-
verted from the type Date/Time to a Num-
ber
.

Time

Number

Number

Time(1999;10;07) <= 2.0 -->
0

The same rules apply here as for the previous
operation.

Text

Time

Number

"Metrohm" <=
Time(1999;10;07) --> 0

Before the operation, the operand is conver-
ted from the type Date/Time to Text (here
thus: "1999.10.07"), afterwards the texts
are compared according to ASCII value (see
Chapter 2.4.4.10, page 65)
.

Time

Text

Number

Time(1999;10;7) <=
"Metrohm" --> 1

The same rules apply here as for the previous
operation.

Advertising