31 // Makes a string of the argument (which is not macro-expanded)

    31 // Makes a string of the argument (which is not macro-expanded)

    32 #define STR(a)  #a

    32 #define STR(a)  #a

    33 

    33 

    34 // Makes a string of the macro expansion of a

    34 // Makes a string of the macro expansion of a

    35 #define XSTR(a) STR(a)

    35 #define XSTR(a) STR(a)

    36 

    39 

    37 // Apply pre-processor token pasting to the expansions of x and y.

    40 // Apply pre-processor token pasting to the expansions of x and y.

    38 // The token pasting operator (##) prevents its arguments from being

    41 // The token pasting operator (##) prevents its arguments from being

    39 // expanded.  This macro allows expansion of its arguments before the

    42 // expanded.  This macro allows expansion of its arguments before the

    40 // concatenation is performed.  Note: One auxilliary level ought to be

    43 // concatenation is performed.  Note: One auxilliary level ought to be