from langchain_core.tools import tool

@tool
def add(a: float, b: float) -> float:
    """
        Add two float numbers.

        Args:
            a: float
            b float

        Returns:
            a + b
        """
    return a + b

@tool
def substract(a: float, b: float) -> float:
    """
        Substract two float numbers.

        Args:
            a: float
            b float

        Returns:
            a - b
        """
    return a - b

@tool
def multiple(a: float, b: float) -> float:
    """
        Multiple two float numbers.

        Args:
            a: float
            b float

        Returns:
            a * b
        """
    return a * b

@tool
def divide(a: float, b: float) -> float:
    """
        Divide two float numbers.

        Args:
            a: float
            b float

        Returns:
            a / b
        """
    if b is not 0:
        return a / b
    else:
        raise "Illegal operation. Unable to divide by zero."