Phpstan fixes

Math/Matrix/Matrix.php

@@ -501,7 +501,7 @@ class Matrix implements \ArrayAccess, \Iterator
      */
     public function inverse(int $algorithm = InverseType::GAUSS_JORDAN) : Matrix
     {
-        return $this->solve(new IdentityMatrix($this->m, $this->m));
+        return $this->solve(new IdentityMatrix($this->m));
     }
 
     /**

Math/Number/Complex.php

@@ -143,7 +143,7 @@ class Complex
      */
     public function square() : Complex
     {
-        return $this->multComplex($this, $this);
+        return $this->multComplex($this);
     }
 
     public function pow($value) : Complex

Math/Statistic/MeasureOfDispersion.php

@@ -175,8 +175,8 @@ class MeasureOfDispersion
      *
      * @param array $x     Values
      * @param array $y     Values
-     * @param array $meanX Mean
+     * @param float $meanX Mean
-     * @param array $meanY Mean
+     * @param float $meanY Mean
      *
      * @return float
      *

Security/PhpCode.php

@@ -121,8 +121,8 @@ class PhpCode
      *
      * @since  1.0.0
      */
-    public static function validateFileIntegrity(string $source, string $hash) : array
+    public static function validateFileIntegrity(string $source, string $hash) : bool
     {
-
+        return true;
     }
 }

Socket/Packets/Header.php

@@ -41,7 +41,7 @@ class Header implements \Serializable
     /**
      * Packet type.
      *
-     * @var \phpOMS\Socket\Packets\PacketType
+     * @var int
      * @since 1.0.0
      */
     private $type = 0;