25 lines
645 B
Plaintext
25 lines
645 B
Plaintext
#include <boost/crc.hpp>
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extern "C"
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{
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short crc12 (unsigned char const * data, int length);
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bool crc12_check (unsigned char const * data, int length);
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}
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namespace
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{
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unsigned long constexpr truncated_polynomial = 0xc06;
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}
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// assumes CRC is last 16 bits of the data and is set to zero
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// caller should assign the returned CRC into the message in big endian byte order
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short crc12 (unsigned char const * data, int length)
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{
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return boost::augmented_crc<12, truncated_polynomial> (data, length);
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}
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bool crc12_check (unsigned char const * data, int length)
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{
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return !boost::augmented_crc<12, truncated_polynomial> (data, length);
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}
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