2249 FreshPorts -- devel/cityhash
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Port details
cityhash 1.1.0 devel on this many watch lists=1 search for ports that depend on this port
Family of hash functions
Maintained by: g.veniamin@googlemail.com search for ports maintained by this maintainer
Port Added: 10 Feb 2013 14:30:53
License: MIT


CityHash provides hash functions for strings.  The functions mix the
input bits thoroughly but are not suitable for cryptography.  See
"Hash Quality," below, for details on how CityHash was tested and so on.

Functions by CityHash:

- CityHash32() returns a 32-bit hash.
- CityHash64() and similar return a 64-bit hash.
- CityHash128() and similar return a 128-bit hash and are tuned for
strings of at least a few hundred bytes.  Depending on your compiler
and hardware, it's likely faster than CityHash64() on sufficiently long
strings.  It's slower than necessary on shorter strings, but we expect
that case to be relatively unimportant.
- CityHashCrc128() and similar are variants of CityHash128() that depend
on _mm_crc32_u64(), an intrinsic that compiles to a CRC32 instruction
on some CPUs.  However, none of the functions we provide are CRCs.
- CityHashCrc256() is a variant of CityHashCrc128() that also depends
on _mm_crc32_u64().  It returns a 256-bit hash.

All members of the CityHash family were designed with heavy reliance
on previous work by Austin Appleby, Bob Jenkins, and others.
For example, CityHash32 has many similarities with Murmur3a.

WWW: http://code.google.com/p/cityhash/
SVNWeb : Main Web Site : Distfiles Availability : PortsMonThere are no ports dependent upon this port

To install the port: cd /usr/ports/devel/cityhash/ && make install clean
To add the package: pkg_add -r cityhash


Configuration Options
     No options to configure

Master Sites:
  1. ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/distfiles/
  2. http://cityhash.googlecode.com/files/

Number of commits found: 1

Commit History - (may be incomplete: see SVNWeb link above for full details)
DateByDescription
10 Feb 2013 14:30:35
Original commit files touched by this commit  1.1.0
miwi search for other commits by this committer
CityHash provides hash functions for strings.  The functions mix the
input bits thoroughly but are not suitable for cryptography.  See
"Hash Quality," below, for details on how CityHash was tested and so on.

Functions by CityHash:

- CityHash32() returns a 32-bit hash.
- CityHash64() and similar return a 64-bit hash.
- CityHash128() and similar return a 128-bit hash and are tuned for
strings of at least a few hundred bytes.  Depending on your compiler
and hardware, it's likely faster than CityHash64() on sufficiently long
strings.  It's slower than necessary on shorter strings, but we expect
that case to be relatively unimportant.
- CityHashCrc128() and similar are variants of CityHash128() that depend
on _mm_crc32_u64(), an intrinsic that compiles to a CRC32 instruction
(Only the first 15 lines of the commit message are shown above View all of this commit message)

Number of commits found: 1

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