numpy.signbit (array, out = None, where = True, casting = & # 39; same_kind & # 39 ;, order = & # 39; K & # 39 ;, dtype = None) : This math function helps the user to check element by element if signbit is installed or not.
array: [array_like] Input array or object whose elements, we need to check.
out: [ndarray, optional] Output array with same dimensions as Input array, placed with result.
** kwargs: Allows you to pass keyword variable length of argument to a function. It is used when we want to handle named argument in a function.
where: [array_like, optional] True value means to calculate the universal functions (ufunc) at that position, False value means to leave the value in the output alone.
Return: True, if sign-bit is set; else False.
arr: [1, -23, 34, 11] Check for signbit: [False True False False] out_arr: [0 1 2 3] placing signbit check values to out_arr: [0 1 0 0]