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__fpurge (3)
  • __fpurge (3) ( Русские man: Библиотечные вызовы )
  • >> __fpurge (3) ( Linux man: Библиотечные вызовы )
  •  

    NAME

    fpurge, __fpurge - purge a stream
     
    

    SYNOPSIS

    /* unsupported */
    #include <stdio.h>
    
    int fpurge(FILE *stream);
    
    /* supported */
    #include <stdio.h>
    
    #include <stdio_ext.h> void __fpurge(FILE *stream);
     

    DESCRIPTION

    The function fpurge() clears the buffers of the given stream. For output streams this discards any unwritten output. For input streams this discards any input read from the underlying object but not yet obtained via getc(3); this includes any text pushed back via ungetc(3). See also fflush(3).

    The function __fpurge() does precisely the same, but without returning a value.  

    RETURN VALUE

    Upon successful completion fpurge() returns 0. On error, it returns -1 and sets errno appropriately.  

    ERRORS

    EBADF
    stream is not an open stream.
     

    CONFORMING TO

    These functions are non-standard and not portable. The function fpurge() was introduced in 4.4BSD and is not available under Linux. The function __fpurge() was introduced in Solaris, and is present in glibc 2.1.95 and later.  

    NOTES

    Usually it is a mistake to want to discard input buffers.  

    SEE ALSO

    fflush(3), setbuf(3), stdio_ext(3)  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


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