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.TH "MPI_WTICK" "3" "Apr 08, 2024" "" "Open MPI"
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\fI\%MPI_Wtick\fP — Returns the resolution of \fI\%MPI_Wtime\fP\&.
.SH SYNTAX
.SS C Syntax
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.nf
.ft C
#include <mpi.h>

double MPI_Wtick()
.ft P
.fi
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.SS Fortran Syntax
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.nf
.ft C
USE MPI
! or the older form: INCLUDE \(aqmpif.h\(aq
DOUBLE PRECISION MPI_WTICK()
.ft P
.fi
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.SS Fortran 2008 Syntax
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.nf
.ft C
USE mpi_f08
DOUBLE PRECISION MPI_WTICK()
.ft P
.fi
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.SH RETURN VALUE
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Time in seconds of resolution of \fI\%MPI_Wtime\fP\&.
.SH DESCRIPTION
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\fI\%MPI_Wtick\fP returns the resolution of \fI\%MPI_Wtime\fP 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 \fI\%MPI_Wtick\fP should be 10^\-3.
.SH NOTE
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This function does not return an error value. Consequently, the result
of calling it before \fI\%MPI_Init\fP or after \fI\%MPI_Finalize\fP is undefined.
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\fBSEE ALSO:\fP
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.IP \(bu 2
\fI\%MPI_Wtime\fP
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.SH COPYRIGHT
2003-2024, The Open MPI Community
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