elf_hash(3E)      MISC. REFERENCE MANUAL PAGES       elf_hash(3E)



NAME
     elf_hash - compute hash value

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

     #include <libelf.h>

     unsigned long elf_hash(const char *name);

DESCRIPTION
     elf_hash 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  arith-
     metic  to  avoid  possible  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   function   [see
     elf_getdata(3E) and elf_xlate(3E)].  The hash value returned
     is guaranteed not to be the bit pattern of all ones (~0UL).

SEE ALSO
     elf(3E), elf_getdata(3E), elf_xlate(3E).




























                    Last change: ELF Library                    1