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This commit is contained in:
furrtek 2016-01-31 09:34:24 +01:00
parent 29ec87a9ad
commit 44638e504b
166 changed files with 8700 additions and 3967 deletions
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14
firmware/common/bit_pattern.hpp
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@ -31,12 +31,12 @@ public:
history = (history << 1) | (bit & 1);
}
uint32_t value() const {
uint64_t value() const {
return history;
}
private:
uint32_t history { 0 };
uint64_t history { 0 };
};
class BitPattern {
@ -49,24 +49,24 @@ public:
}
constexpr BitPattern(
const uint32_t code,
const uint64_t code,
const size_t code_length,
const size_t maximum_hanning_distance = 0
) : code_ { code },
mask_ { (1U << code_length) - 1U },
mask_ { (1ULL << code_length) - 1ULL },
maximum_hanning_distance_ { maximum_hanning_distance }
{
}
bool operator()(const BitHistory& history, const size_t) const {
const auto delta_bits = (history.value() ^ code_) & mask_;
const size_t count = __builtin_popcountl(delta_bits);
const size_t count = __builtin_popcountll(delta_bits);
return (count <= maximum_hanning_distance_);
}
private:
uint32_t code_;
uint32_t mask_;
uint64_t code_;
uint64_t mask_;
size_t maximum_hanning_distance_;
};