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#include <stdio.h>
void (*nissy_log)(const char *, void *);
void *nissy_log_data;
void write_wrapper(void (*)(const char *, void *), const char *, ...);
void
write_wrapper(void (*write)(const char *, void *), const char *str, ...)
{
static const size_t len = 1000;
char message[len];
va_list args;
va_start(args, str);
vsprintf(message, str, args);
va_end(args);
write(message, nissy_log_data);
}
#define LOG(...) if (nissy_log != NULL) write_wrapper(nissy_log, __VA_ARGS__);
#ifdef DEBUG
#define STATIC
#define STATIC_INLINE
#define DBG_WARN(condition, ...) if (!(condition)) LOG(__VA_ARGS__);
#define DBG_ASSERT(condition, retval, ...) \
if (!(condition)) { LOG(__VA_ARGS__); return retval; }
#else
#define STATIC static
#define STATIC_INLINE static inline
#define DBG_WARN(condition, ...)
#define DBG_ASSERT(condition, retval, ...)
#endif
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