4.7 Expressions and Operators

Expressions can consist of unary operators (one operand, e.g., not) or binary operators (two operands, e.g., +). The operators allowable in expressions are listed in the table below.

Operators within expressions are evaluated left to right, thus the expression 5 + 1 * 2 will yield the value 12. Use parenthesis to change the order of operator execution, for example 5 + (1 * 2) will yield the value 7.

With the exception of the equality (e.g. =) and relational operators (e.g. >=), all the operators listed can be freely combined in both constant and relocatable expressions. Relocatable expressions will be evaluated by the linker at link time, after psects have been positioned and symbol values have been determined.