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<?php
use Litipk\BigNumbers\Decimal as Decimal;
/**
* @group arcsin
*/
class DecimalArcsinTest extends PHPUnit_Framework_TestCase
{
public function arcsinProvider() {
// Some values provided by wolframalpha
return [
['0.154', '0.15461530016096', 14],
['1', '1.57079632679489662', 17],
['-1', '-1.57079632679489662', 17],
];
}
* @dataProvider arcsinProvider
public function testSimple($nr, $answer, $digits)
$x = Decimal::fromString($nr);
$arcsinX = $x->arcsin($digits);
$this->assertTrue(
Decimal::fromString($answer)->equals($arcsinX),
"The answer must be " . $answer . ", but was " . $arcsinX
);
* @expectedException \DomainException
* @expectedExceptionMessage The arcsin of this number is undefined.
public function testArcsinGreaterThanOne()
Decimal::fromString('25.546')->arcsin();
public function testArcsinFewerThanNegativeOne()
Decimal::fromString('-304.75')->arcsin();
Litipk /
php-bignumbers
