"""
Math operations for the calculator.

NOTE: This file contains intentional bugs for testing purposes.
"""


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


def subtract(a: float, b: float) -> float:
    """Subtract b from a."""
    return a - b


def multiply(a: float, b: float) -> float:
    """Multiply two numbers."""
    return a * b


def divide(a: float, b: float) -> float:
    """
    Divide a by b.

    BUG: Does not handle division by zero!
    """
    # BUG: No check for b == 0
    return a / b


def power(a: float, b: float) -> float:
    """
    Raise a to the power of b.

    BUG: Negative exponents not handled correctly for some cases.
    """
    # BUG: This naive implementation has issues with negative bases and fractional exponents
    result = 1
    for _ in range(int(b)):
        result *= a
    return result