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CRC-32: Difference between revisions
→{{header|Vala}}
Line 2,197:
stdout.printf("%lx\n", crc32(0, str));
}</lang>
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===Implementation===
<lang vala>public class Crc32
{
private const uint32 s_generator = (uint32)0xedb88320;
public Crc32()
{
m_table = new uint32[256];
uint32 rem;
for (uint32 i = 0; i < 256; i++) {
rem = i;
for (uint32 j = 0; j < 8; j++) {
if ((rem & 1) != 0) {
rem >>= 1;
rem ^= s_generator;
} else
rem >>= 1;
}
m_table[i] = rem;
}
}
public uint32 get(string str) {
uint32 crc = 0;
crc = ~crc;
for (int i = 0; i < str.length; i++) {
crc = (crc >> 8) ^ m_table[(crc & 0xff) ^ str[i]];
}
return ~crc;
}
private uint32[] m_table;
}
void main() {
var crc32 = new Crc32();
stdout.printf("%x\n", crc32.get("The quick brown fox jumps over the lazy dog"));
}</lang>
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