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29fc1719a9
Some current Linux distributions are still using GCC 4.6 which has no/poor C++11 support. probably more of this needed if we are to support such compilers. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7896 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
32 lines
771 B
C++
32 lines
771 B
C++
#include <boost/crc.hpp>
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#include <boost/config.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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#define POLY 0xc06
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#ifdef BOOST_NO_CXX11_CONSTEXPR
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#define TRUNCATED_POLYNOMIAL POLY
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#else
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namespace
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{
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unsigned long constexpr TRUNCATED_POLYNOMIAL = POLY;
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}
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#endif
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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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