Git-Mirrors/portapack-mayhem
1
0
Fork 0
mirror of https://github.com/eried/portapack-mayhem.git synced 2024-10-01 01:26:06 -04:00
Code Issues Packages Projects Releases Wiki Activity

Deepen BitPattern and BitHistory to 64 bits.

Browse Source
This commit is contained in:
Jared Boone 2015-11-16 10:33:08 -08:00
parent 4d6877ab15
commit 9900c29283
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
firmware/common/bit_pattern.hpp
View File

@ -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_;
};