我在 xcode 中找不到任何 CRC32 算法的实现。谁能帮我计算一下?
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16
libz
has a crc32()
function. To use it with NSData, try this simple category:
Your header:
@interface NSData (CRC32)
- (uint32_t)CRC32Value;
@end
Your implementation:
#include "your header"
#include <zlib.h>
@implementation NSData (CRC32)
- (uint32_t)CRC32Value {
uLong crc = crc32(0L, Z_NULL, 0);
crc = crc32(crc, [self bytes], [self length]);
return crc;
}
@end
于 2011-04-02T18:00:48.453 回答