| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* |
| 5 |
* Function code for the complex negative() function |
| 6 |
* |
| 7 |
* @copyright Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex) |
| 8 |
* @license https://opensource.org/licenses/MIT MIT |
| 9 |
*/ |
| 10 |
namespace Complex; |
| 11 |
|
| 12 |
/** |
| 13 |
* Returns the negative of a complex number. |
| 14 |
* |
| 15 |
* @param Complex|mixed $complex Complex number or a numeric value. |
| 16 |
* @return float The negative value of the complex argument. |
| 17 |
* @throws Exception If argument isn't a valid real or complex number. |
| 18 |
* |
| 19 |
* @see rho |
| 20 |
* |
| 21 |
*/ |
| 22 |
function negative($complex) |
| 23 |
{ |
| 24 |
$complex = Complex::validateComplexArgument($complex); |
| 25 |
|
| 26 |
return new Complex( |
| 27 |
-1 * $complex->getReal(), |
| 28 |
-1 * $complex->getImaginary(), |
| 29 |
$complex->getSuffix() |
| 30 |
); |
| 31 |
} |
| 32 |
|
