18.2.338. MPI_Status_f2c

MPI_Status_f2c, MPI_Status_f2c - Translates a C status into a Fortran INTEGER-style status, or vice versa.

18.2.338.1. SYNTAX

18.2.338.1.1. C Syntax

#include <mpi.h>

int MPI_Status_f2c(const MPI_Fint *f_status, MPI_Status *c_status)
int MPI_Status_c2f(const MPI_Status *c_status, MPI_Fint *f_status)

18.2.338.2. PARAMETERS

  • f_status: mpi-style INTEGER MPI status object

  • c_status: C-style MPI status object

18.2.338.3. DESCRIPTION

These two procedures are provided in C to convert from a Fortran status (which is an array of integers) to a C status (which is a structure), and vice versa. The conversion occurs on all the information in status, including that which is hidden. That is, no status information is lost in the conversion.

When using MPI_Status_f2c(), if f_status is a valid Fortran status, but not the Fortran value of MPI_STATUS_IGNORE or MPI_STATUSES_IGNORE, then MPI_Status_f2c() returns in c_status a valid C status with the same content. If f_status is the Fortran value of MPI_STATUS_IGNORE or MPI_STATUSES_IGNORE, or if f_status is not a valid Fortran status, then the call is erroneous.

When using MPI_Status_c2f(), the opposite conversion is applied. If c_status is MPI_STATUS_IGNORE or MPI_STATUSES_IGNORE, or if c_status is not a valid C status, then the call is erroneous.

The input status has the same source, tag and error code values as the output status, and returns the same answers when queried for count, elements, and cancellation. The conversion function may be called with an input status argument that has an undefined error field, in which case the value of the error field in the output status argument is undefined.

18.2.338.4. NOTES

These functions are only available in C; they are not available in any of the Fortran MPI interfaces.