log.h

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#ifndef LOG_H
#define LOG_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdio.h>

#define STRINGIFY(x) #x
#define TOSTRING(x) STRINGIFY(x)

#ifdef DEBUG
#define pr_debug(fmt, ...)                                                     \
    fprintf(stdout,                                                        \
        "DEBUG:[" __FILE__ ":%s(" TOSTRING(__LINE__) ")] " fmt,        \
        __func__, ##__VA_ARGS__)
#else
#define pr_debug(...) (void)0
#endif

#define pr_info(fmt, ...)                                                      \
    fprintf(stdout, "INFO:[" __FILE__ ":%s(" TOSTRING(__LINE__) ")] " fmt, \
        __func__, ##__VA_ARGS__)

#define pr_warn(fmt, ...)                                                      \
    fprintf(stderr,                                                        \
        "WARNING:[" __FILE__ ":%s(" TOSTRING(__LINE__) ")] " fmt,      \
        __func__, ##__VA_ARGS__)

#define pr_err(fmt, ...)                                                       \
    fprintf(stderr,                                                        \
        "ERROR:[" __FILE__ ":%s(" TOSTRING(__LINE__) ")] " fmt,        \
        __func__, ##__VA_ARGS__)

#ifdef __cplusplus
}
#endif

#endif