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rx/bits: add setBits utility

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DH 2025-12-25 21:58:30 +03:00
parent 8587801745
commit aadbd0f9c1
1 changed files with 14 additions and 0 deletions
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14
rx/include/rx/bits.hpp
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@ -6,7 +6,21 @@ inline constexpr T getBits(T value, unsigned end, unsigned begin) {
return (value >> begin) & ((1ull << (end - begin + 1)) - 1);
}
template <typename T, typename U>
inline constexpr T setBits(T value, unsigned end, unsigned begin, U bits) {
auto mask = ((1ull << (end - begin + 1)) - 1) << begin;
return static_cast<T>((value & ~mask) |
((static_cast<T>(bits) << begin) & mask));
}
template <typename T> inline constexpr T getBit(T value, unsigned bit) {
return (value >> bit) & 1;
}
template <typename T, typename U>
inline constexpr T setBit(T value, unsigned bit, U bitValue) {
auto mask = 1ull << bit;
return static_cast<T>((value & ~mask) |
((static_cast<T>(bitValue) << bit) & mask));
}
} // namespace rx