Bunch of generic code standard items. Will need a cleanup.

src/Numerics/BasicMath.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\Numerics;
 
 /**
@@ -13,7 +15,8 @@ class BasicMath
     /**
      * Squares the input (x^2 = x * x)
      *
-     * @param  float $x Value to square (x)
+     * @param float $x Value to square (x)
+     *
      * @return float The squared value (x^2)
      */
     public static function square($x): float
@@ -24,8 +27,9 @@ class BasicMath
     /**
      * Sums the items in $itemsToSum
      *
-     * @param  mixed[]    $itemsToSum The items to sum,
-     * @param  \Closure $callback   The function to apply to each array element before summing.
+     * @param mixed[]    $itemsToSum The items to sum,
+     * @param \Closure $callback   The function to apply to each array element before summing.
+     *
      * @return float The sum.
      */
     public static function sum(array $itemsToSum, \Closure $callback): float

src/Numerics/GaussianDistribution.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\Numerics;
 
 /**
@@ -198,7 +200,8 @@ class GaussianDistribution implements \Stringable
             -1.523e-15,
             -9.4e-17,
             1.21e-16,
-            -2.8e-17, ];
+            -2.8e-17,
+        ];
 
         $ncof = count($coefficients);
         $d = 0.0;

src/Numerics/IdentityMatrix.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\Numerics;
 
 class IdentityMatrix extends DiagonalMatrix

src/Numerics/Range.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\Numerics;
 
 // The whole purpose of this class is to make the code for the SkillCalculator(s)

src/Numerics/SquareMatrix.php

@@ -1,12 +1,14 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\Numerics;
 
 class SquareMatrix extends Matrix
 {
     public function __construct(float|int ...$allValues)
     {
-        $rows = (int) sqrt(count($allValues));
+        $rows = (int)sqrt(count($allValues));
         $cols = $rows;
 
         $matrixData = [];

src/Numerics/Vector.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace DNW\Skills\Numerics;
 
 class Vector extends Matrix