use Chippyash\Type\TypeFactory;
use Chippyash\Type\RequiredType;
use Chippyash\Type\Number\Rational\RationalTypeFactory;
/**
* Tuning
* set tolerance for creating rationals from floats - sqrt() function will use it.
*
* Try setting this to the PHP int limit i.e. 1e-17. You will find that some
* of the square roots cannot be computed because the limits of the mechanism
* to convert floats to rational numbers busts the available precision and therefore
* we get into an overflow situation.
*
* Setting tolerance to a lower number, say 1e-6, will compute faster but at the
* expense of accuracy
*/
RationalTypeFactory::setDefaultFromFloatTolerance(1.0E-15);
/**
* Set the required number type. System will automatically use GMP if
* it is available. You can force it to use native PHP thus:
*/
RequiredType::getInstance()->set(RequiredType::TYPE_NATIVE);
//now create 10000 numbers for the test
//try playing with this figure to see the results
$numbers = [];
for ($x = 1; $x < 10001; $x++) {
$numbers[$x] = TypeFactory::create('int', $x);
}
//create primes
$primes = [];
$start = microtime(true);
foreach ($numbers as $key => $number) {
/**
* @runInSeparateProcess
*/
public function testSetDefaultFromFloatToleranceIsStatic()
{
RationalTypeFactory::setDefaultFromFloatTolerance(1.0E-5);
$this->assertEquals('113/355', (string) RationalTypeFactory::fromFloat(M_1_PI));
RationalTypeFactory::setDefaultFromFloatTolerance(1.0E-15);
$this->assertEquals('25510582/80143857', (string) RationalTypeFactory::fromFloat(M_1_PI));
}
