:ref:`MPI_Info_get_valuelen` - Retrieves the length of the key value associated with an info object.
#include <mpi.h>
int MPI_Info_get_valuelen(MPI_Info info, const char *key,
int *valuelen, int *flag)
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_INFO_GET_VALUELEN(INFO, KEY, VALUELEN, FLAG, IERROR)
INTEGER INFO, VALUELEN, IERROR
LOGICAL FLAG
CHARACTER*(*) KEY
USE mpi_f08
MPI_Info_get_valuelen(info, key, valuelen, flag, ierror)
TYPE(MPI_Info), INTENT(IN) :: info
CHARACTER(LEN=*), INTENT(IN) :: key
INTEGER, INTENT(OUT) :: valuelen
LOGICAL, INTENT(OUT) :: flag
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
info
: Info object (handle).key
: Key (string).
valuelen
: Length of value arg (integer).flag
: Returns true if key defined, false if not (boolean).ierror
: Fortran only: Error status (integer).
:ref:`MPI_Info_get_valuelen` retrieves the length of the value associated with key. If key is defined, valuelen is set to the length of its associated value and flag is set to true. If key is not defined, valuelen is not touched and flag is set to false. The length returned in C does not include the end-of-string character.
If key is larger than MPI_MAX_INFO_KEY, the call is erroneous.
.. seealso::
* :ref:`MPI_Info_get`
* :ref:`MPI_Info_get_nkeys`
* :ref:`MPI_Info_get_nthkey`