mirror of
https://github.com/ZmnSCPxj/clboss.git
synced 2026-08-20 13:28:15 +02:00
23 lines
522 B
C++
23 lines
522 B
C++
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#include"Ln/FeatureBit.hpp"
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#include"Util/Str.hpp"
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#include<cstdint>
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#include<vector>
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namespace Ln {
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bool feature_bit(std::string const& features_hex, unsigned int bit) {
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auto bytes = std::vector<std::uint8_t>();
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try {
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bytes = Util::Str::hexread(features_hex);
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} catch (Util::Str::HexParseFailure const&) {
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return false;
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}
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auto byte_from_end = std::size_t(bit / 8);
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if (byte_from_end >= bytes.size())
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return false;
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auto b = bytes[bytes.size() - 1 - byte_from_end];
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return ((b >> (bit % 8)) & 1) != 0;
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}
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}
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