SIMD bit operations without repo bloat.

BitCal is a header-only C++17 bit manipulation library focused on a small, credible contract: compile-time SIMD dispatch, portable fallbacks, and documentation that matches the code that still matters.

#include <bitcal/bitcal.hpp>

int main() {
    bitcal::bit256 lhs(0xDEADBEEF);
    bitcal::bit256 rhs(0xCAFEBABE);

    auto masked = lhs.andnot(rhs);
    auto ones = masked.popcount();

    return static_cast<int>(ones);
}