maba / math
PHP任意精度数学库
v1.0.1
2014-09-20 19:37 UTC
This package is auto-updated.
Last update: 2024-09-10 20:15:15 UTC
README
PHP任意精度数学库。
安装
composer require maba/math
为什么
var_dump(intval(9223372036854775807 + 1)); // int(-9223372036854775808) var_dump(5.2 * 3 === 15.6); // bool(false) var_dump((8 + 92233720368547750) * 1500 / 1500 - 92233720368547750); // float(16)
用法
use Maba\Component\Math\BcMath; use Maba\Component\Math\Math; use Maba\Component\Math\NumberFormatter; $basicMathImplementation = new BcMath(); $math = new Math($basicMathImplementation); var_dump($math->add('9223372036854775807', '1')); // string(40) "9223372036854775808.00000000000000000000" var_dump($math->isEqual($math->mul('5.2', '3'), '15.6')); // bool(true) var_dump($math->sub($math->div($math->mul($math->add('8', '92233720368547750'), '1500'), '1500'), '92233720368547750')); // string(22) "8.00000000000000000000" $result = $math->pow($math->mul('3.141592653589793', '2.71828182845904523536'), 13); $formatter = new NumberFormatter($math); echo $formatter->formatNumber($result, 4, '.', ' '); // prints 1 284 625 710 591.2256
BcMath
类使用 bcmath
函数。如果您需要使用其他任意精度数学实现,请实现 BasicMathInterface
。
运行测试
composer install vendor/bin/phpunit