# MPI library
**MPI** (Message Passing Interface) is a library that enables you to write parallel programs in C or Fortran77. The library uses commonly available operating system services to create parallel processes and exchange information among these processes.

# MPI_Errhandler_free
This method frees an MPI error handler.

# Syntax

```C
int MPI_Errhandler_free( MPI_Errhandler *errhandler)
```
# Parameters
* **`errorhandler`** is the MPI error handler which is set to ` MPI_ERRHANDLER_NULL` upon terimantion.
# Return value

* The function returns an error if it is unsuccessful. The error aborts the MPI job by default.

* In case of success, it returns **`MPI_SUCCESS`** - the value returned upon successful termination of any MPI routine.

* **`MPI_ERR_ARG`** is returned if some argument is invalid.


What is MPI_Errhandler_free?

Frees an MPI error handler, setting it to MPI_ERRHANDLER_NULL, returning success or an error code.