for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
use Litipk\BigNumbers\Decimal as Decimal;
use PHPUnit\Framework\TestCase;
/**
* @group cos
*/
class DecimalCosTest extends TestCase
{
public function cosProvider() {
// Some values provided by Mathematica
return [
['1', '0.54030230586814', 14],
['123.123', '-0.82483472946164834', 17],
['15000000000', '-0.72218064388924347683', 20]
];
}
* @dataProvider cosProvider
public function testSimple($nr, $answer, $digits)
$x = Decimal::fromString($nr);
$cosX = $x->cos((int)$digits);
$this->assertTrue(
Decimal::fromString($answer)->equals($cosX),
"The answer must be " . $answer . ", but was " . $cosX
);
Litipk /
php-bignumbers
