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<?php
use \Litipk\BigNumbers\Decimal as Decimal;
use \Litipk\BigNumbers\DecimalConstants as DecimalConstants;
/**
* @group cotan
*/
class DecimalCotanTest extends PHPUnit_Framework_TestCase
{
public function cotanProvider() {
// Some values providede by mathematica
return [
['1', '0.64209261593433', 14],
['123.123', '1.45891895739232371', 17],
['15000000000', '-1.04405948230055701685', 20]
];
}
* @dataProvider cotanProvider
public function testSimple($nr, $answer, $digits)
$x = Decimal::fromString($nr);
$cotanX = $x->cotan($digits);
$this->assertTrue(
Decimal::fromString($answer)->equals($cotanX),
'cotan('.$nr.') must be equal to '.$answer.', but was '.$cotanX
);
* @expectedException \DomainException
* @expectedExceptionMessage The cotangent of this 'angle' is undefined.
public function testCotanPiDiv()
$PI = DecimalConstants::PI();
$PI->cotan();
Litipk /
php-bignumbers
