#include <stdarg.h>
#include <stdio.h>

#define NDEBUG

#ifdef NDEBUG
#define NO_DEBUG_OUTPUT
#endif

/* Use this function to output messages when something unexpected
   happens (which might be an indication of an error). *Don't* use it
   when there's internal errors in the code - these should be handled
   by asserts. */
void
tgl_warning(const char *format, ...)
{
#ifndef NO_DEBUG_OUTPUT
  va_list args;
  va_start(args, format);
  fprintf(stderr, "*WARNING* ");
  vfprintf(stderr, format, args);
  va_end(args);
#endif /* !NO_DEBUG_OUTPUT */
}

/* This function should be used for debug output only. */
void
tgl_trace(const char *format, ...)
{
#ifndef NO_DEBUG_OUTPUT
  va_list args;
  va_start(args, format);
  fprintf(stderr, "*DEBUG* ");
  vfprintf(stderr, format, args);
  va_end(args);
#endif /* !NO_DEBUG_OUTPUT */
}

/* Use this function to output info about things in the code which
   should be fixed (missing handling of special cases, important
   features not implemented, known bugs/buglets, ...). */
void
tgl_fixme(const char *format, ...)
{
#ifndef NO_DEBUG_OUTPUT
  va_list args;
  va_start(args, format);
  fprintf(stderr, "*FIXME* ");
  vfprintf(stderr, format, args);
  va_end(args);
#endif /* !NO_DEBUG_OUTPUT */
}