Operators

An operator links two operands to an expression, or is used with one operand to form an expression. When a statement is executed that contains these expressions, the result of the expression is determined (operation), and is used in the statement. Operators are displayed by using either special characters or reserved words.

• Assignment operators
  The assignment operators = and ?= link the source and target field of an assignment. The operator = also links actual parameters to formal parameters, for example, in procedure calls, or when working with data clusters.

• Arithmetic operators
  The arithmetic operators +, -, *, /, DIV, MOD,** link two or more numeric operands to an arithmetic expression. In addition, the characters + and - act as plus/minus signs in arithmetic expressions.

• Relational operators
  The relational operators =, <>, <, >, <=,>= etc. link two operands of any data type to a logical expression. There are additional relational operators for specific data types.

• Boolean operators
  The boolean operators AND and OR link the results of individual logical expressions to a logical expression. The result of a logical expression is either true or false. The boolean operator NOT inverts the result of a logical expression.

• Bit operators
  The bit operators BIT-AND, BIT-OR, BIT-XOR link two or more byte-type operands to a bit expression. The bit operator BIT-NOT negates a byte-type operand.

• Literal operator
  The literal operator & links two literals to form one literal.