GETW(3)                    Linux Programmer's Manual                   GETW(3)



NAME
       getw, putw - input and output of words (ints)

SYNOPSIS
       #include <stdio.h>

       int getw(FILE *stream);

       int putw(int w, FILE *stream);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       getw(), putw():
           Since glibc 2.3.3:
               _XOPEN_SOURCE && ! (_POSIX_C_SOURCE >= 200112L)
                   || /* Glibc since 2.19: */ _DEFAULT_SOURCE
                   || /* Glibc versions <= 2.19: */ _BSD_SOURCE ||
               _SVID_SOURCE
           Before glibc 2.3.3:
               _SVID_SOURCE || _BSD_SOURCE || _XOPEN_SOURCE

DESCRIPTION
       getw() reads a word (that is, an int) from stream.  It's  provided  for
       compatibility with SVr4.  We recommend you use fread(3) instead.

       putw()  writes  the word w (that is, an int) to stream.  It is provided
       for compatibility  with  SVr4,  but  we  recommend  you  use  fwrite(3)
       instead.

RETURN VALUE
       Normally,  getw()  returns  the  word  read,  and putw() returns 0.  On
       error, they return EOF.

ATTRIBUTES
       For  an  explanation  of  the  terms  used   in   this   section,   see
       attributes(7).

       allbox; lbw14 lb lb l l l.  Interface Attribute Value T{ getw(), putw()
       T}   Thread safety   MT-Safe

CONFORMING TO
       SVr4, SUSv2.  Not present in POSIX.1.

BUGS
       The value returned on error is also a legitimate data value.  ferror(3)
       can be used to distinguish between the two cases.

SEE ALSO
       ferror(3), fread(3), fwrite(3), getc(3), putc(3)

COLOPHON
       This  page  is  part of release 4.16 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.



GNU                               2016-03-15                           GETW(3)