resets binary file access errors
flag = mclearerr([fd])
a scalar: the fd parameter returned by the
function mopen. -1 stands for last opened
file. Default value is -1.
a boolean: %T if fd points to a valid file identifier and %F else.
The function mclearerr is used to reset the error
indicator and EOF indicator to zero.
| Version | Description |
| 6.0.0 | A flag indicating the file identifier validity is now returned. |