1: <?php
  2: /**
  3:  * Hard type support
  4:  * For when you absolutely want to know what you are getting
  5:  *
  6:  * @author Ashley Kitson <akitson@zf4.biz>
  7:  * @copyright Ashley Kitson, UK, 2014
  8:  * @licence GPL V3 or later : http://www.gnu.org/licenses/gpl.html
  9:  */
 10: 
 11: namespace chippyash\Type\Number;
 12: 
 13: use \chippyash\Type\AbstractType;
 14: use chippyash\Type\Interfaces\NumericTypeInterface;
 15: use chippyash\Type\Number\Complex\ComplexType;
 16: use chippyash\Type\Number\Rational\RationalType;
 17: use chippyash\Type\Number\Rational\RationalTypeFactory;
 18: 
 19: /**
 20:  * Floating number Type
 21:  */
 22: class FloatType extends AbstractType implements NumericTypeInterface
 23: {
 24: 
 25:     /**
 26:      * Negates the number
 27:      *
 28:      * @return \chippyash\Type\Number\FloatType Fluent Interface
 29:      */
 30:     public function negate()
 31:     {
 32:         $this->value *= -1;
 33: 
 34:         return $this;
 35:     }
 36: 
 37:     /**
 38:      * Return the number as a Complex number i.e. n+0i
 39:      *
 40:      * @return \chippyash\Type\Number\Complex\ComplexType
 41:      */
 42:     public function asComplex()
 43:     {
 44:         return new ComplexType(
 45:             $this->asRational(),
 46:             new RationalType(new IntType(0), new IntType(1))
 47:         );
 48:     }
 49: 
 50:     /**
 51:      * Return number as Rational number.
 52:      * NB, numerator and denominator will be caste as IntTypes
 53:      *
 54:      * @return \chippyash\Type\Number\Rational\RationalType
 55:      */
 56:     public function asRational()
 57:     {
 58:         return RationalTypeFactory::fromFloat($this->value);
 59:     }
 60: 
 61:     /**
 62:      * Return number as an IntType number.
 63:      *
 64:      * @return \chippyash\Type\Number\IntType
 65:      */
 66:     public function asIntType()
 67:     {
 68:         return new IntType($this->value);
 69:     }
 70: 
 71:     /**
 72:      * Return number as a FloatType number.
 73:      *
 74:      * @return \chippyash\Type\Number\FloatType
 75:      */
 76:     public function asFloatType()
 77:     {
 78:         return clone $this;
 79:     }
 80: 
 81:     /**
 82:      * Return the absolute value of the number
 83:      *
 84:      * @return \chippyash\Type\Number\FloatType
 85:      */
 86:     public function abs()
 87:     {
 88:         return new self(abs($this->value));
 89:     }
 90: 
 91:     /**
 92:      * Return correctly typed value for this type
 93:      *
 94:      * @param mixed $value
 95:      *
 96:      * @return float
 97:      */
 98:     protected function typeOf($value)
 99:     {
100:         return floatval($value);
101:     }
102: }
103: