prntdbg.h

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/*
 * some preprocessor workarounds according to www.decompile.com/cpp/faq/file_and_line_error_string.htm
 */
#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)

#if defined(__GNUC__)
    /* gcc's cpp has extensions; it allows for macros with a variable number of
         arguments. */
    #if !defined(NDEBUG)
        #define prntdbg(format, ...) fprintf(stderr, __FILE__ "(" TOSTRING(__LINE__) "): \t" format, ##__VA_ARGS__)
    #else
        #define prntdbg(format, ...) ((void)0)
    #endif /* defined(NODEBUG) */
#else
    /* This compiler does not have extensions, so we just rename the function */
    #define prntdbg printf
#endif