CRC-32: Difference between revisions
Content deleted Content added
→{{header|Ruby}}: algorithm is not correct, however description might not |
→{{header|Go}}: added implementation |
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=={{header|Go}}== |
=={{header|Go}}== |
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===Library=== |
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<lang go>package main |
<lang go>package main |
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output |
output |
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<pre>414FA339</pre> |
<pre>414FA339</pre> |
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===Implementation=== |
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<lang go>package main |
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import "fmt" |
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var table [256]uint32 |
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func init() { |
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for i := range table { |
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word := uint32(i) |
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for j := 0; j < 8; j++ { |
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if word&1 == 1 { |
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word = (word >> 1) ^ 0xedb88320 |
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} else { |
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word >>= 1 |
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} |
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} |
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table[i] = word |
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} |
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} |
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func crc32(s string) uint32 { |
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crc := ^uint32(0) |
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for i := 0; i < len(s); i++ { |
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crc = table[byte(crc)^s[i]] ^ (crc >> 8) |
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} |
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return ^crc |
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} |
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func main() { |
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fmt.Printf("%0x\n", crc32("The quick brown fox jumps over the lazy dog")) |
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}</lang> |
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Output: |
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<pre> |
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414fa339 |
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</pre> |
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=={{header|J}}== |
=={{header|J}}== |
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