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- elf_hash(3E) Silicon Graphics 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);
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- 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 arithmetic 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).
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- Page 1 Release 6.2
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