diff -Naur a/BCMath.php b/BCMath.php
--- a/BCMath.php	2024-02-21 11:30:36.000000000 +0100
+++ b/BCMath.php	2024-06-01 23:15:29.580565608 +0200
@@ -363,12 +363,13 @@
             'sqrt' => 2,
             'sub' => 3
         ];
-        if (count($arguments) < $params[$name] - 1) {
+        $cnt = count($arguments);
+        if ($cnt < $params[$name] - 1) {
             $min = $params[$name] - 1;
-            throw new \ArgumentCountError("bc$name() expects at least $min parameters, " . func_num_args() . " given");
+            throw new \ArgumentCountError("bc$name() expects at least $min parameters, " . $cnt . " given");
         }
-        if (count($arguments) > $params[$name]) {
-            $str = "bc$name() expects at most {$params[$name]} parameters, " . func_num_args() . " given";
+        if ($cnt > $params[$name]) {
+            $str = "bc$name() expects at most {$params[$name]} parameters, " . $cnt . " given";
             throw new \ArgumentCountError($str);
         }
         $numbers = array_slice($arguments, 0, $params[$name] - 1);