# PXFISFIFO

POSIX Function: Tests whether a file is a special FIFO file.

## Module

USE IFPOSIX

result = PXFISFIFO (m)

m | (Input) INTEGER(4). The value of the `st_mode`component (field) in the structure `stat`.

## Results

The result type is logical.

The PXFISFIFO function tests whether the file is a special FIFO file created by PXFMKFIFO. If the file is a special FIFO file, the result value is .TRUE.; otherwise, .FALSE..

Parent topic: POSIX* Library Routines

## See Also

PXFMKFIFO
PXFISREG