mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-10-31 15:47:10 -04:00
32 lines
772 B
C++
32 lines
772 B
C++
|
#include <boost/crc.hpp>
|
||
|
|
#include <boost/config.hpp>
|
||
|
|
|
||
|
|
extern "C"
|
||
|
|
{
|
||
|
|
short crc14 (unsigned char const * data, int length);
|
||
|
|
bool crc14_check (unsigned char const * data, int length);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define POLY 0x2757
|
||
|
|
|
||
|
|
#ifdef BOOST_NO_CXX11_CONSTEXPR
|
||
|
|
#define TRUNCATED_POLYNOMIAL POLY
|
||
|
|
#else
|
||
|
|
namespace
|
||
|
|
{
|
||
|
|
unsigned long constexpr TRUNCATED_POLYNOMIAL = POLY;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// assumes CRC is last 14 bits of the data and is set to zero
|
||
|
|
// caller should assign the returned CRC into the message in big endian byte order
|
||
|
|
short crc14 (unsigned char const * data, int length)
|
||
|
|
{
|
||
|
|
return boost::augmented_crc<14, TRUNCATED_POLYNOMIAL> (data, length);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool crc14_check (unsigned char const * data, int length)
|
||
|
|
{
|
||
|
|
return !boost::augmented_crc<14, TRUNCATED_POLYNOMIAL> (data, length);
|
||
|
|
}
|