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bloomysearch
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TODO : https://stackoverflow.com/questions/1694507/difference-between-operator-in-js-and-python

This commit is contained in:
Phyks 2014-10-28 02:54:43 +01:00
parent 679ac6a774
commit 1f63d1788c
2 changed files with 18 additions and 21 deletions
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38
index_generation/bloom.py
View File

@ -120,33 +120,31 @@ class BloomFilter():
Fowler/Noll/Vo hashing.
"""
n = len(v)
a = np.int32(2166136261)
a = 2166136261
i = 0
while i < n:
c = np.int32(ord(v[i]))
d = np.int32(c) & np.int32(0xff000000)
c = ord(v[i])
d = c & 0xff000000
if d:
a ^= np.int32(d >> 24)
a += np.int32((a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24))
d = c & np.int32(0xff0000)
a ^= d >> 24
a += (a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24)
d = c & 0xff0000
if d:
a ^= np.int32(d >> 16)
a += np.int32((a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24))
d = c & np.int32(0xff00)
a ^= d >> 16
a += (a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24)
d = c & 0xff00
if d:
a ^= np.int32(d >> 8)
a += np.int32((a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24))
a ^= np.int32(c & 0xff)
a += np.int32((a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24))
print(a)
a ^= d >> 8
a += (a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24)
a ^= c & 0xff
a += (a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24)
i += 1
# From http://home.comcast.net/~bretm/hash/6.html
a += np.int32(a << 13)
a ^= np.int32(a >> 7)
a += np.int32(a << 3)
a ^= np.int32(a >> 17)
a += np.int32(a << 5)
print(a)
a += a << 13
a ^= a >> 7
a += a << 3
a ^= a >> 17
a += a << 5
return a & 0xffffffff
def fnv_1a_b(self, a):

1
js/bloom.js
View File

@ -134,7 +134,6 @@
}
a ^= c & 0xff;
a += (a << 1) + (a << 4) + (a << 7) + (a << 8) + (a << 24);
console.log(a);
}
// From http://home.comcast.net/~bretm/hash/6.html
a += a << 13;