FNV1 and FNV1a hashes implemented for 32, 64, 128, 256, 512, and 1024 bit widths.

diff --git a/basis/checksums/fnv1/authors.txt b/basis/checksums/fnv1/authors.txt
new file mode 100644 (file)
index 0000000..c64bb4e
--- /dev/null
+++ b/basis/checksums/fnv1/authors.txt
@@ -0,0 +1 @@
+Alaric Snell-Pym
\ No newline at end of file

diff --git a/basis/checksums/fnv1/fnv1-docs.factor b/basis/checksums/fnv1/fnv1-docs.factor
new file mode 100644 (file)
index 0000000..4fbecd2
--- /dev/null
+++ b/basis/checksums/fnv1/fnv1-docs.factor
@@ -0,0 +1,67 @@
+USING: help.markup help.syntax ;
+IN: checksums.fnv1
+
+HELP: fnv1-32
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1, 32-bit." } ;
+
+HELP: fnv1a-32
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1a, 32-bit." } ;
+
+
+HELP: fnv1-64
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1, 64-bit." } ;
+
+HELP: fnv1a-64
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1a, 64-bit." } ;
+
+
+HELP: fnv1-128
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1, 128-bit." } ;
+
+HELP: fnv1a-128
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1a, 128-bit." } ;
+
+
+HELP: fnv1-256
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1, 256-bit." } ;
+
+HELP: fnv1a-256
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1a, 256-bit." } ;
+
+
+HELP: fnv1-512
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1, 512-bit." } ;
+
+HELP: fnv1a-512
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1a, 512-bit." } ;
+
+
+HELP: fnv1-1024
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1, 1024-bit." } ;
+
+HELP: fnv1a-1024
+{ $class-description "Fowler-Noll-Vo checksum algorithm, v1a, 1024-bit." } ;
+
+ARTICLE: "checksums.fnv1" "Fowler-Noll-Vo checksum"
+  "The Fowler-Noll-Vo checksum algorithm is another simple and fast checksum. It comes in 32, 64, 128, 256, 512 and 1024-bit versions, each in 1 and 1a variants. The 1a variants tend to produce a slightly better result. See http://en.wikipedia.org/wiki/Fowler_Noll_Vo_hash for more details."
+
+  { $subsection fnv1-32 }
+  { $subsection fnv1a-32 }
+
+  { $subsection fnv1-64 }
+  { $subsection fnv1a-64 }
+
+  { $subsection fnv1-128 }
+  { $subsection fnv1a-128 }
+
+  { $subsection fnv1-256 }
+  { $subsection fnv1a-256 }
+
+  { $subsection fnv1-512 }
+  { $subsection fnv1a-512 }
+
+  { $subsection fnv1-1024 }
+  { $subsection fnv1a-1024 }
+ ;
+
+ABOUT: "checksums.fnv1"

diff --git a/basis/checksums/fnv1/fnv1-tests.factor b/basis/checksums/fnv1/fnv1-tests.factor
new file mode 100644 (file)
index 0000000..de665a1
--- /dev/null
+++ b/basis/checksums/fnv1/fnv1-tests.factor
@@ -0,0 +1,41 @@
+USING: checksums.fnv1 checksums strings tools.test ;
+IN: checksums.fnv1.tests
+
+! A few test vectors taken from http://www.isthe.com/chongo/src/fnv/test_fnv.c
+
+[ HEX: 811c9dc5 ] [ "" fnv1-32 checksum-bytes ] unit-test
+[ HEX: 811c9dc5 ] [ "" fnv1a-32 checksum-bytes ] unit-test
+[ HEX: cbf29ce484222325 ] [ "" fnv1-64 checksum-bytes ] unit-test
+[ HEX: cbf29ce484222325 ] [ "" fnv1a-64 checksum-bytes ] unit-test
+
+[ HEX: 050c5d7e ] [ "a" fnv1-32 checksum-bytes ] unit-test
+[ HEX: e40c292c ] [ "a" fnv1a-32 checksum-bytes ] unit-test
+[ HEX: af63bd4c8601b7be ] [ "a" fnv1-64 checksum-bytes ] unit-test
+[ HEX: af63dc4c8601ec8c ] [ "a" fnv1a-64 checksum-bytes ] unit-test
+
+[ HEX: 050c5d7d ] [ "b" fnv1-32 checksum-bytes ] unit-test
+[ HEX: e70c2de5 ] [ "b" fnv1a-32 checksum-bytes ] unit-test
+[ HEX: af63bd4c8601b7bd ] [ "b" fnv1-64 checksum-bytes ] unit-test
+[ HEX: af63df4c8601f1a5 ] [ "b" fnv1a-64 checksum-bytes ] unit-test
+
+[ HEX: 31f0b262 ] [ "foobar" fnv1-32 checksum-bytes ] unit-test
+[ HEX: bf9cf968 ] [ "foobar" fnv1a-32 checksum-bytes ] unit-test
+[ HEX: 340d8765a4dda9c2 ] [ "foobar" fnv1-64 checksum-bytes ] unit-test
+[ HEX: 85944171f73967e8 ] [ "foobar" fnv1a-64 checksum-bytes ] unit-test
+
+! I couldn't find any test vectors for 128, 256, 512, or 1024 versions of FNV1 hashes.
+! So, just to check that your maths works the same as my maths, here's a few samples computed on my laptop.
+! So they may be right or wrong, but either way, them failing is cause for concern somewhere...
+
+[ 3897470310 ] [ "Hello, world!" fnv1-32 checksum-bytes ] unit-test
+[ 3985698964 ] [ "Hello, world!" fnv1a-32 checksum-bytes ] unit-test
+[ 7285062107457560934 ] [ "Hello, world!" fnv1-64 checksum-bytes ] unit-test
+[ 4094109891673226228 ] [ "Hello, world!" fnv1a-64 checksum-bytes ] unit-test
+[ 281580511747867177735318995358496831158 ] [ "Hello, world!" fnv1-128 checksum-bytes ] unit-test
+[ 303126633380056630368940439484674414572 ] [ "Hello, world!" fnv1a-128 checksum-bytes ] unit-test
+[ 104295939182568077644846978685759236849634734810631820736486253421270219742822 ] [ "Hello, world!" fnv1-256 checksum-bytes ] unit-test
+[ 9495445728692795332446740615588417456874414534608540692485745371050033741380 ] [ "Hello, world!" fnv1a-256 checksum-bytes ] unit-test
+[ 3577308325596719252093726711895047340166329831006673109476042102918876665433235513101496175651226507162015890004121912850661561110326527625579463564626958 ] [ "Hello, world!" fnv1-512 checksum-bytes ] unit-test
+[ 3577308325596719162840652138474318309664256091923081930027929425092517582111473988451078821416039944023089883981242376700859598441397004715365740906054208 ] [ "Hello, world!" fnv1a-512 checksum-bytes ] unit-test
+[ 52692754922840008511959888105094366091401994235075816792707658326855733053286986999719949898492311786648795846192078757217437117165934438286601534984230194601365788544275827382423366672856972872132009691615382991251544423521887009322211754219117294019951276080952271766377222613325328591830596794468813260226 ] [ "Hello, world!" fnv1-1024 checksum-bytes ] unit-test
+[ 52692754922840008511959888105094366091401994235075816792707658326855804920671100511873485674717442819607149127986090276849364757610838433887624184145636764448608707614141109841761957788887305179569455221243999538336208648824673027111352338809582124430199044921035232455717748500524777795242051756321605065326 ] [ "Hello, world!" fnv1a-1024 checksum-bytes ] unit-test

diff --git a/basis/checksums/fnv1/fnv1.factor b/basis/checksums/fnv1/fnv1.factor
new file mode 100644 (file)
index 0000000..f221cef
--- /dev/null
+++ b/basis/checksums/fnv1/fnv1.factor
@@ -0,0 +1,106 @@
+! Copyright (C) 2009 Alaric Snell-Pym
+! See http://factorcode.org/license.txt for BSD license.
+
+USING: checksums classes.singleton kernel math math.ranges
+math.vectors sequences ;
+
+IN: checksums.fnv1
+
+SINGLETON: fnv1-32
+SINGLETON: fnv1a-32
+SINGLETON: fnv1-64
+SINGLETON: fnv1a-64
+SINGLETON: fnv1-128
+SINGLETON: fnv1a-128
+SINGLETON: fnv1-256
+SINGLETON: fnv1a-256
+SINGLETON: fnv1-512
+SINGLETON: fnv1a-512
+SINGLETON: fnv1-1024
+SINGLETON: fnv1a-1024
+
+CONSTANT: fnv1-32-prime 16777619
+CONSTANT: fnv1-64-prime 1099511628211
+CONSTANT: fnv1-128-prime 309485009821345068724781371
+CONSTANT: fnv1-256-prime 374144419156711147060143317175368453031918731002211
+CONSTANT: fnv1-512-prime 35835915874844867368919076489095108449946327955754392558399825615420669938882575126094039892345713852759
+CONSTANT: fnv1-1024-prime 5016456510113118655434598811035278955030765345404790744303017523831112055108147451509157692220295382716162651878526895249385292291816524375083746691371804094271873160484737966720260389217684476157468082573
+
+CONSTANT: fnv1-32-mod HEX: ffffffff
+CONSTANT: fnv1-64-mod HEX: ffffffffffffffff
+CONSTANT: fnv1-128-mod HEX: ffffffffffffffffffffffffffffffff
+CONSTANT: fnv1-256-mod HEX: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
+CONSTANT: fnv1-512-mod HEX: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
+CONSTANT: fnv1-1024-mod HEX: ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
+
+CONSTANT: fnv1-32-basis HEX: 811c9dc5
+CONSTANT: fnv1-64-basis HEX: cbf29ce484222325
+CONSTANT: fnv1-128-basis HEX: 6c62272e07bb014262b821756295c58d
+CONSTANT: fnv1-256-basis HEX: dd268dbcaac550362d98c384c4e576ccc8b1536847b6bbb31023b4c8caee0535
+CONSTANT: fnv1-512-basis HEX: b86db0b1171f4416dca1e50f309990acac87d059c90000000000000000000d21e948f68a34c192f62ea79bc942dbe7ce182036415f56e34bac982aac4afe9fd9
+CONSTANT: fnv1-1024-basis HEX: 5f7a76758ecc4d32e56d5a591028b74b29fc4223fdada16c3bf34eda3674da9a21d9000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004c6d7eb6e73802734510a555f256cc005ae556bde8cc9c6a93b21aff4b16c71ee90b3
+
+M: fnv1-32 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-32-basis swap
+    [ swap fnv1-32-prime * bitxor fnv1-32-mod bitand ] each ;
+
+M: fnv1a-32 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-32-basis swap
+    [ bitxor fnv1-32-prime * fnv1-32-mod bitand ] each ;
+
+
+M: fnv1-64 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-64-basis swap
+    [ swap fnv1-64-prime * bitxor fnv1-64-mod bitand ] each ;
+
+M: fnv1a-64 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-64-basis swap
+    [ bitxor fnv1-64-prime * fnv1-64-mod bitand ] each ;
+
+
+M: fnv1-128 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-128-basis swap
+    [ swap fnv1-128-prime * bitxor fnv1-128-mod bitand ] each ;
+
+M: fnv1a-128 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-128-basis swap
+    [ bitxor fnv1-128-prime * fnv1-128-mod bitand ] each ;
+
+
+M: fnv1-256 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-256-basis swap
+    [ swap fnv1-256-prime * bitxor fnv1-256-mod bitand ] each ;
+
+M: fnv1a-256 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-256-basis swap
+    [ bitxor fnv1-256-prime * fnv1-256-mod bitand ] each ;
+
+
+M: fnv1-512 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-512-basis swap
+    [ swap fnv1-512-prime * bitxor fnv1-512-mod bitand ] each ;
+
+M: fnv1a-512 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-512-basis swap
+    [ bitxor fnv1-512-prime * fnv1-512-mod bitand ] each ;
+
+
+M: fnv1-1024 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-1024-basis swap
+    [ swap fnv1-1024-prime * bitxor fnv1-1024-mod bitand ] each ;
+
+M: fnv1a-1024 checksum-bytes ( bytes checksum -- value )
+    drop
+    fnv1-1024-basis swap
+    [ bitxor fnv1-1024-prime * fnv1-1024-mod bitand ] each ;

diff --git a/basis/checksums/fnv1/summary.txt b/basis/checksums/fnv1/summary.txt
new file mode 100644 (file)
index 0000000..2c74cda
--- /dev/null
+++ b/basis/checksums/fnv1/summary.txt
@@ -0,0 +1 @@
+Fowler-Noll-Vo checksum algorithm