Serena

/// Helper functions for mathematical operations library helper; /// Performs subtraction of two integers int subtract(int a, int b) { return a - b; } /// Multiplies two numbers double multiply(double x, double y) { return x * y; } /// A utility class for mathematical operations class MathHelper { /// Calculates the power of a number static double power(double base, int exponent) { double result = 1.0; for (int i = 0; i < exponent; i++) { result *= base; } return result; } /// Calculates the square root approximation double sqrt(double number) { if (number < 0) { throw ArgumentError('Cannot calculate square root of negative number'); } double guess = number / 2; for (int i = 0; i < 10; i++) { guess = (guess + number / guess) / 2; } return guess; } } /// An enumeration for operation types enum OperationType { addition, subtraction, multiplication, division } /// A record for representing mathematical operations typedef Operation = ({OperationType type, double operand1, double operand2});