◄Summary► ◄Example► ◄Up► ◄Contents► ◄Index► ◄Back► ─────Run-Time Library─────────────────────────────────────────────────────── The _clear87 function returns the floating-point status word and sets it to zero, whereas the _status87 function returns it without change. The floating-point status word is a combination of the 8087/80287 status word and other conditions detected by the 8087/80287 exception handler, such as floating-point stack overflow and underflow. Return Value The bits in the value returned indicate the floating-point status. See FLOAT.H for a complete definition of the bits returned by _clear87. Many of the math library functions modify the 8087/80287 status word, with unpredictable results. Return values from _clear87 and _status87 become more reliable as fewer floating-point operations are performed between known states of the floating-point status word. -♦-