Class: Bloombroom::FNVB

Inherits:
Object
  • Object
show all
Defined in:
lib/bloombroom/hash/fnv_b.rb

Constant Summary collapse

INIT32 = 
0x811c9dc5
INIT64 = 
0xcbf29ce484222325
PRIME32 = 
0x01000193
PRIME64 = 
0x100000001b3
MOD32 = 
2 ** 32
MOD64 = 
2 ** 64

Class Method Summary collapse

Class Method Details

.fnv1_32(data) ⇒ Object 



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# File 'lib/bloombroom/hash/fnv_b.rb', line 12

def self.fnv1_32(data)
  hash = INIT32

  data.each_byte do |byte|
    hash = (hash * PRIME32) % MOD32
    hash = hash ^ byte
  end

  hash
end

.fnv1_64(data) ⇒ Object 



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# File 'lib/bloombroom/hash/fnv_b.rb', line 23

def self.fnv1_64(data)
  hash = INIT64

  data.each_byte do |byte|
    hash = (hash * PRIME64) % MOD64
    hash = hash ^ byte
  end

  hash
end

.fnv1a_32(data) ⇒ Object 



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# File 'lib/bloombroom/hash/fnv_b.rb', line 34

def self.fnv1a_32(data)
  hash = INIT32

  data.each_byte do |byte|
    hash = hash ^ byte
    hash = (hash * PRIME32) % MOD32
  end

  hash
end

.fnv1a_64(data) ⇒ Object 



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# File 'lib/bloombroom/hash/fnv_b.rb', line 45

def self.fnv1a_64(data)
  hash = INIT64

  data.each_byte do |byte|
    hash = hash ^ byte
    hash = (hash * PRIME64) % MOD64
  end

  hash
end