Function signum

maths/signum.py:6–36

Applies signum function on the number Custom test cases: >>> signum(-10) -1 >>> signum(10) 1 >>> signum(0) 0 >>> signum(-20.5) -1 >>> signum(20.5) 1 >>> signum(-1e-6) -1 >>> signum(1e-6) 1 >>> signum("Hello") Traceback (most r

(num: float)

def signum(num: float) -> int:
    """
    Applies signum function on the number

    Custom test cases:
    >>> signum(-10)
    -1
    >>> signum(10)
    1
    >>> signum(0)
    0
    >>> signum(-20.5)
    -1
    >>> signum(20.5)
    1
    >>> signum(-1e-6)
    -1
    >>> signum(1e-6)
    1
    >>> signum("Hello")
    Traceback (most recent call last):
        ...
    TypeError: '<' not supported between instances of 'str' and 'int'
    >>> signum([])
    Traceback (most recent call last):
        ...
    TypeError: '<' not supported between instances of 'list' and 'int'
    """
    if num < 0:
        return -1
    return 1 if num else 0


def test_signum() -> None: