PHP 8.5: Fix casting warnings in BigInteger::toInt() and BigNumber::of()

Author: julien-boudry

src/BigInteger.php

@@ -979,9 +979,9 @@ public function toScale(int $scale, RoundingMode $roundingMode = RoundingMode::U
     #[Override]
     public function toInt(): int
     {
-        $intValue = (int) $this->value;
+        $intValue = \filter_var($this->value, \FILTER_VALIDATE_INT);
 
-        if ($this->value !== (string) $intValue) {
+        if ($intValue === false) {
             throw IntegerOverflowException::toIntOverflow($this);
         }
 

src/BigNumber.php

@@ -456,7 +456,12 @@ private static function _of(BigNumber|int|float|string $value): BigNumber
         }
 
         if (is_float($value)) {
-            $value = (string) $value;
+            if (is_nan($value)) {
+                $value = "NAN";
+            }
+            else {
+                $value = (string) $value;
+            }
         }
 
         if (str_contains($value, '/')) {