Function bits

KittyMemoryEx/KittyAsm.cpp:13–24

namespace KittyAsm
{
    uint32_t bits(uint32_t v, int hi, int lo)
    {
        if (hi < lo)
            return 0u;

        int width = hi - lo + 1;
        if (width >= 32)
            return v >> lo;

        uint32_t mask = (width == 32) ? 0xFFFFFFFFu : ((1u << width) - 1u);
        return (v >> lo) & mask;
    }
} // namespace KittyAsm

using namespace KittyAsm;