Fix Bibabyte in humanNumber (#188)

Author: szepeviktor

benchmarks/Support/Reporter.php

@@ -28,7 +28,7 @@ abstract public function finishedSubjects(Subjects $subjects, int $workers): voi
      */
     public static function humanMemory($bytes)
     {
-        $i = floor(log($bytes, 1024));
+        $i = (int) floor(log($bytes, 1024));
 
         return number_format(
             $bytes / pow(1024, $i),
@@ -42,12 +42,12 @@ public static function humanMemory($bytes)
      */
     public static function humanNumber($number)
     {
-        $i = $number > 0 ? floor(log($number, 1000)) : 0;
+        $i = $number > 0 ? (int) floor(log($number, 1000)) : 0;
 
         return number_format(
             $number / pow(1000, $i),
             [0, 2, 2, 2][$i],
-        ) . ['', 'K', 'M', 'B'][$i];
+        ) . ['', 'K', 'M', 'G'][$i];
     }
 
     /**