now_real           15 src/posix.h    extern double now_real        ();
now_real          222 src/util.cpp      timer->start_real = now_real();
now_real          234 src/util.cpp      timer->elapsed_real += now_real() - timer->start_real;
now_real          250 src/util.cpp      if (timer->running) elapsed += now_real() - timer->start_real;