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    Command:

    strnlen

    
    
    

    SYNOPSIS

           #include <string.h>
    
           size_t strnlen(const char *s, size_t maxlen);
    
       Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
    
           strnlen():
               Since glibc 2.10:
                   _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
               Before glibc 2.10:
                   _GNU_SOURCE
    
    
    

    DESCRIPTION

           The  strnlen()  function  returns  the  number  of  bytes in the string
           pointed to by s, excluding the terminating null  byte  ('\0'),  but  at
           most  maxlen.   In doing this, strnlen() looks only at the first maxlen
           bytes at s and never beyond s+maxlen.
    
    
    

    RETURN VALUE

           The strnlen() function returns strlen(s), if that is less than  maxlen,
           or  maxlen if there is no null byte ('\0') among the first maxlen bytes
           pointed to by s.
    
    
    

    ATTRIBUTES

       Multithreading (see pthreads(7))
           The strnlen() function is thread-safe.
    
    
    

    CONFORMING TO

           POSIX.1-2008.
    
    
    

    SEE ALSO

           strlen(3)
    
    
    

    GNU 2014-02-25 STRNLEN(3)

    
    
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