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<?php
use Litipk\BigNumbers\Decimal as Decimal;
/**
* @group cos
*/
class DecimalExpTest extends PHPUnit_Framework_TestCase
{
public function expProvider() {
// Some values provided by Mathematica
return [
['0', '1', 0],
['0', '1', 1],
['0', '1', 2],
['1', '3', 0],
['1', '2.7', 1],
['1', '2.72', 2],
['1', '2.718', 3],
['-1', '0', 0],
['-1', '0.4', 1],
['-1', '0.37', 2]
];
}
* @dataProvider expProvider
public function testSimple($nr, $answer, $digits)
$x = Decimal::fromString($nr);
$expX = $x->exp((int)$digits);
$this->assertTrue(
Decimal::fromString($answer)->equals($expX),
"The answer must be " . $answer . ", but was " . $expX
);
Litipk /
php-bignumbers
