/**
* This method tests the "isNegative" method.
*
* @dataProvider data_isNegative
*/
public function test_isNegative(array $provided, array $expected)
{
$p0 = IDouble\Module::isNegative(IDouble\Type::box($provided[0]));
$e0 = $expected[0];
$this->assertInstanceOf('\\Saber\\Data\\IBool\\Type', $p0);
$this->assertSame($e0, $p0->unbox());
}
/**
* This method returns the value as an IInteger. Note: Using this method may result in
* lost of precision.
*
* @access public
* @static
* @param IRatio\Type $x the object to be converted
* @return IInteger\Type the value as an IInteger
*/
public static function toInteger(IRatio\Type $x) : IInteger\Type
{
return IDouble\Module::toInteger(IRatio\Module::toDouble($x));
}
/**
* This method returns the numerically lowest value.
*
* @access public
* @static
* @param IDouble\Type $x the left operand
* @param IDouble\Type $y the right operand
* @return IDouble\Type the minimum value
*/
public static function min(IDouble\Type $x, IDouble\Type $y) : IDouble\Type
{
return IDouble\Module::compare($x, $y)->unbox() <= 0 ? $x : $y;
}
/**
* This method returns the sum of all items in the list.
*
* @access public
* @static
* @param ISeq\Type $xs the sequence to be processed
* @return IDouble\Type the result
*/
public static function sum(ISeq\Type $xs) : IDouble\Type
{
return $xs->foldLeft(function (IDouble\Type $c, INumber\Type $x) {
return IDouble\Module::add($c, $x->toDouble());
}, IDouble\Type::zero());
}