Programming instructions

Intermec Fingerprint 6.13 – Programmer's Guide

Continued!

9. Operators

There are three main types of operators – arithmetic, relational, and

logical:

Arithmetic Operators (integers only)

+ Addition (e.g. 2 + 2 = 4)

- Subtraction (e.g. 4 - 1 = 3)

* Multiplication (e.g. 2 * 3 = 6)

\ Integer division (e.g. 6 \ 2 = 3)

MOD Modulo arithmetic (results in an integer value which is the

remainder of an integer division, e.g. 5MOD2 = 1)

^ Exponent (e.g. 5 ^ 2 = 25)

Parentheses can be used to specify the order of calculation, e.g.:

7+5^2\8 = 10

(7+5^2)\8 = 4

Relational Operators

< less than

<= less than or equal to

<> not equal to

= equal to (also used as an assignment operator)

> greater than

>= greater than or equal to

Relational operators return:

-1 if relation is TRUE.

0 if relation is FALSE.

The following rules apply:

• Arithmetic operations are evaluated before relational operations.

• Letters are greater than digits.

• Lowercase letter are greater than their uppercase counterparts.

• The ASCII code “values” of letters increase alphabetically and

the leading and trailing blanks are significant.

• Strings are compared by their corresponding ASCII code value.

Logical Operators

AND conjunction

OR disjunction

XOR exclusive or

EQV equivalent

Logical operators combine simple logical expressions to form more

complicated logical expressions. The logical operators operate

bitwise on the arguments, e.g.:

1 AND 2 = 0

Logical operators can be used to connect relational operators, e.g.:

A%10 AND A%<100

4. TERMINOLOGY AND SYNTAX, cont'd.