但从我摘自《MSDN》
BITNOT function
See also
Returns a 16-bit binary number in which each bit is set to 1
only if the corresponding bit in binary number is 0. Otherwise,
the bit is set to 0.
Syntax
BITNOT(binary number)
Example
BITNOT(6)
Returns 65529. The 6 = 0...00110. Therefore, BITNOT(6) = 1...11001.
应该是将一整数返回一个十六进制的函数。