classdef Calculator < handle
% Calculator A simple calculator class for testing MATLAB LSP
%
% This class provides basic arithmetic operations and demonstrates
% MATLAB class structure for LSP testing purposes.
properties
LastResult double = 0
History cell = {}
end
properties (Access = private)
OperationCount uint32 = 0
end
methods
function obj = Calculator()
% Constructor for Calculator class
obj.LastResult = 0;
obj.History = {};
obj.OperationCount = 0;
end
function result = add(obj, a, b)
% ADD Add two numbers
% result = add(obj, a, b) returns the sum of a and b
result = a + b;
obj.updateState(result, 'add');
end
function result = subtract(obj, a, b)
% SUBTRACT Subtract b from a
% result = subtract(obj, a, b) returns a - b
result = a - b;
obj.updateState(result, 'subtract');
end
function result = multiply(obj, a, b)
% MULTIPLY Multiply two numbers
% result = multiply(obj, a, b) returns a * b
result = a * b;
obj.updateState(result, 'multiply');
end
function result = divide(obj, a, b)
% DIVIDE Divide a by b
% result = divide(obj, a, b) returns a / b
% Throws error if b is zero
if b == 0
error('Calculator:DivisionByZero', 'Cannot divide by zero');
end
result = a / b;
obj.updateState(result, 'divide');
end
function displayHistory(obj)
% DISPLAYHISTORY Display the calculation history
fprintf('Calculation History:\n');
for i = 1:length(obj.History)
fprintf(' %d: %s = %.4f\n', i, obj.History{i}.operation, obj.History{i}.result);
end
end
end
methods (Access = private)
function updateState(obj, result, operation)
% Update internal state after an operation
obj.LastResult = result;
obj.OperationCount = obj.OperationCount + 1;
obj.History{end+1} = struct('operation', operation, 'result', result);
end
end
methods (Static)
function result = power(base, exponent)
% POWER Compute base raised to exponent
% result = Calculator.power(base, exponent) returns base^exponent
result = base ^ exponent;
end
end
end
