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htons (3)
  • >> htons (3) ( FreeBSD man: Библиотечные вызовы )
  • htons (3) ( Русские man: Библиотечные вызовы )
  • htons (3) ( Linux man: Библиотечные вызовы )
  • htons (3) ( POSIX man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    htonl
    
     
    htons
    
     
    ntohl
    
     
    ntohs
    
     - convert values between host and network byte order
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <arpa/inet.h>

    or

       #include <netinet/in.h>
    uint32_t htonl (uint32_t hostlong);
    uint16_t htons (uint16_t hostshort);
    uint32_t ntohl (uint32_t netlong);
    uint16_t ntohs (uint16_t netshort);
     

    DESCRIPTION

    These routines convert 16 and 32 bit quantities between network byte order and host byte order. On machines which have a byte order which is the same as the network order, routines are defined as null macros.

    These routines are most often used in conjunction with Internet addresses and ports as returned by gethostbyname(3) and getservent(3).  

    SEE ALSO

    gethostbyname(3), getservent(3), byteorder(9)  

    STANDARDS

    The byteorder functions conform to St -p1003.1-2001 .  

    HISTORY

    The byteorder functions appeared in BSD 4.2  

    BUGS

    On the VAX bytes are handled backwards from most everyone else in the world. This is not expected to be fixed in the near future.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    SEE ALSO
    STANDARDS
    HISTORY
    BUGS


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