public static int RotateRightThroughCarry(
int value,
int bitCount,
ref bool carry)
{
var bitMaskUpToEnd = BitMath.CreateBitmaskUpTo(bitCount);
var bitMaskAtMsb = BitMath.CreateBitmaskAt(bitCount - 1);
value &= bitMaskUpToEnd;
var remaining = value >> 1;
var carried = carry ? bitMaskAtMsb : 0;
carry = (value & 1) == 1;
return((remaining | carried) & bitMaskUpToEnd);
}
public static int CreateBitmaskUpTo(int bitCount) => BitMath.CreateBitmaskAt(bitCount) - 1;