Shifts right using at most size_t.sizeof * 8 - 1 bits
auto a = BigUIntView!size_t.fromHexString("afbbfae3cd0aff2714a1de7022b0029d"); a.smallRightShiftInPlace(4); assert(a == BigUIntView!size_t.fromHexString("afbbfae3cd0aff2714a1de7022b0029"));
See Implementation
Shifts right using at most size_t.sizeof * 8 - 1 bits