超高精度大数计算 - BigNumberCalculator

use zxf\Tools\BigNumberCalculator;

// 加法测试: 123456789 + 987654321
BigNumberCalculator::add('123456789', '987654321');

// 减法测试: 987654321 - 123456789
BigNumberCalculator::subtract('987654321', '123456789');

// 乘法测试: 123456789 * 987654321
BigNumberCalculator::multiply('123456789', '987654321');

// 除法测试: 987654321 / 123456789
BigNumberCalculator::divide('987654321', '123456789')

// 小数除法测试: 1 / 3 (精度20位)
BigNumberCalculator::divide('1', '3', 20)

// 幂运算测试: 2^100
BigNumberCalculator::power('2', '100')

// 幂塔测试: 2↑↑4 (2^2^2^2)
BigNumberCalculator::tetration('2', 4)

// 科学计数法测试
$num = BigNumberCalculator::power('3', '100');
BigNumberCalculator::toScientificNotation($num, 15);

// 边界测试: 0的幂运算
BigNumberCalculator::power('0', '123');

// 边界测试: 1的幂塔
BigNumberCalculator::tetration('1', '100');

// 错误处理测试
BigNumberCalculator::analysis("错误测试: 无效输入",
    fn() => BigNumberCalculator::add('123abc', '456'));