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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. |