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CROSS ASSEMBLER->Assembler Expressions->Assembler Expressions
Expressions are placed in the operand field and are evaluated by the cross-assembler to give a numerical value. An expression may be used anywhere within the operand field where a numerical value is expected. The expression evaluator within the cross-assembler will use 32 bit integer arithmetic to calculate the value of the expression.
The expression may consist of symbols, numbers, literals and operators. Parentheses may be used to define a particular order of precedence. Parentheses can be nested.
The following operators are allowed:
| Addition | + |
| Subtraction | - |
| Multiplication | * |
| Division | / |
| Shift right | >> |
| Shift left | << |
| Logical AND | & |
| Logical OR | ! |
| Logical exclusive OR | ~ |
| () | Expressions within parentheses are evaluated first. |
| << >> | Shift operations are performed next.& ! ~Logical AND, OR and exclusive OR have the next priority. * /Multiplication and division are evaluated next. |
| + - | Addition and subtraction are evaluated last. Operators with the same precedence are evaluated from left to right. |