Return elapsed wall clock time in seconds.
The omp_get_wtime routine returns a value equal to the elapsed wall clock time in seconds since some “time in the past”. The actual “time in the past” is arbitrary, but it is guaranteed not to change during the execution of the application program. The time returned is a “per-thread time”, so it is not required to be globally consistent across all threads participating in an application.
Returns: Returns the wall clock time in seconds. Return type: