osx man page for mpi_wtick

MPI_Wtick(3OpenMPI)													       MPI_Wtick(3OpenMPI)

NAME
       MPI_Wtick - Returns the resolution of MPI_Wtime.

SYNTAX
C Syntax
       #include <mpi.h>
       double MPI_Wtick()

Fortran Syntax
       INCLUDE 'mpif.h'
       DOUBLE PRECISION MPI_WTICK()

C++ Syntax
       #include <mpi.h>
       double Wtick()

RETURN VALUE
       Time in seconds of resolution of MPI_Wtime.

DESCRIPTION
       MPI_Wtick  returns  the resolution of MPI_Wtime in seconds. That is, it returns, as a double-precision value, the number of seconds between
       successive clock ticks. For example, if the clock is implemented by the hardware as a counter that is incremented  every  millisecond,  the
       value returned by MPI_Wtick should be 10^-3.

NOTE
       This function does not return an error value. Consequently, the result of calling it before MPI_Init or after MPI_Finalize is undefined.

SEE ALSO
       MPI_Wtime

Open MPI 1.2							  September 2006					       MPI_Wtick(3OpenMPI)