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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace SciPhp\NumPhp\Mathematical; |
| 6 | |
| 7 | /** |
| 8 | * Trigonometric methods |
| 9 | */ |
| 10 | trait TrigonometricTrait |
| 11 | { |
| 12 | /** |
| 13 | * Cosine element-wise. |
| 14 | * |
| 15 | * @param \SciPhp\NdArray|array|int|float $m |
| 16 | * @return \SciPhp\NdArray|int|float |
| 17 | * @link http://sciphp.org/numphp.cos Documentation |
| 18 | * @since 0.4.0 |
| 19 | * @api |
| 20 | */ |
| 21 | final public static function cos($m) |
| 22 | { |
| 23 | if (\is_numeric($m)) { |
| 24 | return cos($m); |
| 25 | } |
| 26 | |
| 27 | static::transform($m, true); |
| 28 | |
| 29 | $func = static function (&$element): void { |
| 30 | $element = cos($element); |
| 31 | }; |
| 32 | |
| 33 | return $m->copy()->walk_recursive($func); |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Trigonometric sine, element-wise. |
| 38 | * |
| 39 | * @param \SciPhp\NdArray|array|int|float $m |
| 40 | * @return \SciPhp\NdArray|int|float |
| 41 | * @link http://sciphp.org/numphp.sin Documentation |
| 42 | * @since 0.4.0 |
| 43 | * @api |
| 44 | */ |
| 45 | final public static function sin($m) |
| 46 | { |
| 47 | if (\is_numeric($m)) { |
| 48 | return sin($m); |
| 49 | } |
| 50 | |
| 51 | static::transform($m, true); |
| 52 | |
| 53 | $func = static function (&$element): void { |
| 54 | $element = sin($element); |
| 55 | }; |
| 56 | |
| 57 | return $m->copy()->walk_recursive($func); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Compute tangent element-wise. |
| 62 | * |
| 63 | * Equivalent to np::sin(x)->divide(np::cos(x)) element-wise. |
| 64 | * |
| 65 | * @param \SciPhp\NdArray|array|int|float $m |
| 66 | * @return \SciPhp\NdArray|int|float |
| 67 | * @link http://sciphp.org/numphp.tan Documentation |
| 68 | * @since 0.5.0 |
| 69 | * @api |
| 70 | */ |
| 71 | final public static function tan($m) |
| 72 | { |
| 73 | if (\is_numeric($m)) { |
| 74 | return tan($m); |
| 75 | } |
| 76 | |
| 77 | static::transform($m, true); |
| 78 | |
| 79 | $func = static function (&$element): void { |
| 80 | $element = tan($element); |
| 81 | }; |
| 82 | |
| 83 | return $m->copy()->walk_recursive($func); |
| 84 | } |
| 85 | } |