Supported Expression Operands

You can monitor an expression that uses the following types of operands only:

Operand

Definition
Variable
A variable used in your program.
Constant
The constant can be one of the following types:

• Fixed or floating-point constant.

  Note: The largest floating-point constant is 1.8E308. The smallest floating-point is 2.23E-308.
  

• A string constant, enclosed in quotation marks (" ")
  
• A character constant, enclosed in single quote marks (' ')
Registers
In the case of conflicting names, the program variable names take precedence over the register names. For conversions that are done automatically when the registers display in mixed-mode expressions, general purpose registers are treated as unsigned arithmetic items with a length appropriate to the register.

If you monitor an enumerated variable, a comment displays to the right of the value. If the value of the variable matches one of the enumerated types, the comment contains the name of the first enumerated type that matches the value of the variable. If the length of the enumerated name does not fit in the monitor, the contents display as an empty entry field.

The comment (empty or not) lets you distinguish between a valid enumerated value and an invalid value. An invalid value does not have a comment to the right of the value.

You can not update an enumerated variable by entering an enumerated type. You must enter a value or expression. If the value is a valid enumerated value, the comment to the right of the value updates.

Bit fields are supported for C/C++ compiled code only. You can display and update bit fields, but you cannot use them in expressions. You cannot look at variables that have been defined using the #DEFINE preprocessor directive.

• Supported Expression Operators 
  Supported Data Types

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