Manual Pages for UNIX Operating System command usage for man elf_hash

ELF Library Functions                              elf_hash(3ELF)



NAME
     elf_hash - compute hash value

SYNOPSIS
     cc [ flag ... ] file ... -lelf [ library ... ]
     #include 

     unsigned long elf_hash(const char *name);


DESCRIPTION
     The elf_hash() function computes a hash value, given a  null
     terminated  string, name. The returned hash value, h, can be
     used as a bucket index, typically after computing h mod x to
     ensure appropriate bounds.


     Hash tables may be built on one machine and used on  another
     because  elf_hash() uses unsigned arithmetic to avoid possi-
     ble  differences in  various  machines'  signed  arithmetic.
     Although  name is shown as char* above, elf_hash() treats it
     as unsigned char* to avoid sign extension differences. Using
     char*  eliminates  type  conflicts  with expressions such as
     elf_hash(name).


     ELF files' symbol hash tables are computed using this  func-
     tion  (see  elf_getdata(3ELF) and elf32_xlatetof(3ELF)). The
     hash value returned is guaranteed not to be the bit  pattern
     of all ones ( ~0UL).

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     elf(3ELF),     elf32_xlatetof(3ELF),      elf_getdata(3ELF),
     libelf(3LIB), attributes(5)






SunOS 5.11          Last change: 11 Jul 2001                    1