# 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_Error_class

This method converts an error code into an error class. 

# Syntax
```C 
int MPI_Error_class(int errorcode, int *errorclass)
```

# Parameters

* **`errorcode`** is the error code returned by an MPI method.

* **`errorclass`** is the output parameter that is returned, representing the error class associated with the error code.
# 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.


What is MPI_Error_class?

Converts an MPI error code to an error class, returning MPI_SUCCESS if successful.