.\" -*- nroff -*-
.\" Copyright 2006-2008 Sun Microsystems, Inc.
.\" Copyright (c) 1996 Thinking Machines Corporation
.\" Copyright (c) 2017 Cisco Systems, Inc.
.\" $COPYRIGHT$
.TH MPI_Wtick 3 "Sep 30, 2023" "4.1.6" "Open MPI"
.SH NAME
\fBMPI_Wtick\fP \- Returns the resolution of MPI_Wtime.

.SH SYNTAX
.ft R
.SH C Syntax
.nf
#include <mpi.h>
double MPI_Wtick()

.fi
.SH Fortran Syntax
.nf
USE MPI
! or the older form: INCLUDE 'mpif.h'
DOUBLE PRECISION MPI_WTICK()

.fi
.SH Fortran 2008 Syntax
.nf
USE mpi_f08
DOUBLE PRECISION MPI_WTICK()

.fi
.SH C++ Syntax
.nf
#include <mpi.h>
double MPI::Wtick()

.fi
.SH RETURN VALUE
.ft R
Time in seconds of resolution of MPI_Wtime.

.SH DESCRIPTION
.ft R
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.
.PP

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

.SH SEE ALSO
.ft R
.sp
MPI_Wtime