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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 <= 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).
┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤
│getw(), putw() │ 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)
GNU 2021-03-22 GETW(3)