FILEPTR - get file pointer corresponding to file descriptor.

(Compatible with UNIX System V C)

#include <fildes.h>
f = fileptr( fd );

int fd;: is the file descriptor of an open file (as returned by "open" or "creat").
FILE *f;: is the corresponding file pointer.

"fileptr" returns the file pointer corresponding to a file descriptor. It returns NULL if the given file descriptor is not open, or it out of range.