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bin_utils.h
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bin_utils.h
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#ifndef __bin_utils_h__
#define __bin_utils_h__
#include "bin.h"
#include "compat.h"
/**
* Generating a list of peak bins for corresponding length
*/
inline int gen_peaks(uint64_t length, bin_t * peaks)
{
int pp = 0;
uint8_t layer = 0;
while (length) {
if (length & 1)
peaks[pp++] = bin_t(((2 * length - 1) << layer) - 1);
length >>= 1;
layer++;
}
for (int i = 0; i < (pp >> 1); ++i) {
bin_t memo = peaks[pp - 1 - i];
peaks[pp - 1 - i] = peaks[i];
peaks[i] = memo;
}
peaks[pp] = bin_t::NONE;
return pp;
}
/**
* Checking for that the bin value is fit to uint32_t
*/
inline bool bin_isUInt32(const bin_t & bin)
{
if (bin.is_all())
return true;
if (bin.is_none())
return true;
const uint64_t v = bin.toUInt();
return static_cast<uint32_t>(v) == v && v != 0xffffffff && v != 0x7fffffff;
}
/**
* Convert the bin value to uint32_t
*/
inline uint32_t bin_toUInt32(const bin_t & bin)
{
if (bin.is_all())
return 0x7fffffff;
if (bin.is_none())
return 0xffffffff;
return static_cast<uint32_t>(bin.toUInt());
}
/**
* Convert the bin value to uint64_t
*/
inline uint64_t bin_toUInt64(const bin_t & bin)
{
return bin.toUInt();
}
/**
* Restore the bin from an uint32_t value
*/
inline bin_t bin_fromUInt32(uint32_t v)
{
if (v == 0x7fffffff)
return bin_t::ALL;
if (v == 0xffffffff)
return bin_t::NONE;
return bin_t(static_cast<uint64_t>(v));
}
/**
* Restore the bin from an uint64_t value
*/
inline bin_t bin_fromUInt64(uint64_t v)
{
return bin_t(static_cast<uint64_t>(v));
}
#endif /*_bin_utils_h__*/