', PHP_EOL; exit(1); } $maxDigits = (int) $argv[1]; if ($maxDigits < 1) { echo 'Max digits must be > 1', PHP_EOL; exit(1); } (new class($maxDigits) { private readonly Calculator\GmpCalculator $gmp; private readonly Calculator\BcMathCalculator $bcmath; private readonly Calculator\NativeCalculator $native; private int $testCounter = 0; private float $lastOutputTime = 0.0; private int $currentSecond = 0; private int $currentSecondTestCounter = 0; private int $testsPerSecond = 0; public function __construct( private readonly int $maxDigits, ) { $this->gmp = new Calculator\GmpCalculator(); $this->bcmath = new Calculator\BcMathCalculator(); $this->native = new Calculator\NativeCalculator(); } public function __invoke(): void { for (; ;) { $a = $this->generateRandomNumber(); $b = $this->generateRandomNumber(); $c = $this->generateRandomNumber(); $this->runTests($a, $b); $this->runTests($b, $a); if ($a !== '0') { $this->runTests("-$a", $b); $this->runTests($b, "-$a"); } if ($b !== '0') { $this->runTests($a, "-$b"); $this->runTests("-$b", $a); } if ($a !== '0' && $b !== '0') { $this->runTests("-$a", "-$b"); $this->runTests("-$b", "-$a"); } if ($c !== '0') { $this->test("$a POW $b MOD $c", fn (Calculator $calc) => $calc->modPow($a, $b, $c)); $this->test("-$a POW $b MOD $c", fn (Calculator $calc) => $calc->modPow("-$a", $b, $c)); } foreach ([$a, $b] as $n) { $this->test("SQRT $n", fn (Calculator $c) => $c->sqrt($n)); for ($exp = 0; $exp <= 3; $exp++) { $this->test("$n POW $exp", fn (Calculator $calc) => $calc->pow($n, $exp)); if ($n !== '0') { $this->test("-$n POW $exp", fn (Calculator $calc) => $calc->pow("-$n", $exp)); } } } } } /** * @param string $a The left operand. * @param string $b The right operand. */ private function runTests(string $a, string $b): void { $this->test("$a + $b", fn (Calculator $c) => $c->add($a, $b)); $this->test("$a - $b", fn (Calculator $c) => $c->sub($a, $b)); $this->test("$a * $b", fn (Calculator $c) => $c->mul($a, $b)); if ($b !== '0') { $this->test("$a / $b", fn (Calculator $c) => $c->divQR($a, $b)); $this->test("$a MOD $b", fn (Calculator $c) => $c->mod($a, $b)); } if ($b !== '0' && $b[0] !== '-') { $this->test("INV $a MOD $b", fn (Calculator $c) => $c->modInverse($a, $b)); } $this->test("GCD $a, $b", fn (Calculator $c) => $c->gcd($a, $b)); $this->test("LCM $a, $b", fn (Calculator $c) => $c->lcm($a, $b)); $this->test("$a AND $b", fn (Calculator $c) => $c->and($a, $b)); $this->test("$a OR $b", fn (Calculator $c) => $c->or($a, $b)); $this->test("$a XOR $b", fn (Calculator $c) => $c->xor($a, $b)); } /** * @param string $test A string representing the test being executed. * @param Closure(Calculator): mixed $callback A callback function accepting a Calculator instance and returning a calculation result. */ private function test(string $test, Closure $callback): void { $gmpResult = $callback($this->gmp); $bcmathResult = $callback($this->bcmath); $nativeResult = $callback($this->native); if ($gmpResult !== $bcmathResult) { $this->failure('GMP', 'BCMath', $test, $gmpResult, $bcmathResult); } if ($gmpResult !== $nativeResult) { $this->failure('GMP', 'Native', $test, $gmpResult, $nativeResult); } $this->testCounter++; $this->currentSecondTestCounter++; $time = microtime(true); $second = (int) $time; if ($second !== $this->currentSecond) { $this->currentSecond = $second; $this->testsPerSecond = $this->currentSecondTestCounter; $this->currentSecondTestCounter = 0; } if ($time - $this->lastOutputTime >= 0.1) { echo "\r", number_format($this->testCounter), ' (', number_format($this->testsPerSecond) . ' / s)'; $this->lastOutputTime = $time; } } /** * @param string $c1 The name of the first calculator. * @param string $c2 The name of the second calculator. * @param string $test A string representing the test being executed. * @param string $v1 The value returned by the first calculator. * @param string $v2 The value returned by the second calculator. */ private function failure(string $c1, string $c2, string $test, string $v1, string $v2): never { echo PHP_EOL; echo 'FAILURE!', PHP_EOL; echo $c1, ' vs ', $c2, PHP_EOL; echo "$v1 != $v2", PHP_EOL; echo $test, PHP_EOL; exit(1); } private function generateRandomNumber(): string { $length = random_int(1, $this->maxDigits); $number = ''; for ($i = 0; $i < $length; $i++) { $number .= random_int(0, 9); } $number = ltrim($number, '0'); if ($number === '') { return '0'; } return $number; } })();