#include <threads.h>
#include <errno.h>

int __pthread_mutex_timedlock(mtx_t* restrict, const struct timespec* restrict);

int mtx_timedlock(mtx_t* restrict m, const struct timespec* restrict ts) {
  int ret = __pthread_mutex_timedlock(m, ts);
  switch (ret) {
    default:
      return thrd_error;
    case 0:
      return thrd_success;
    case ETIMEDOUT:
      return thrd_timedout;
  }
}