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

Author: julien-boudry

src/BigInteger.php

@@ -18,6 +18,7 @@
 use function assert;
 use function bin2hex;
 use function chr;
+use function filter_var;
 use function hex2bin;
 use function in_array;
 use function intdiv;
@@ -32,6 +33,8 @@
 use function strtolower;
 use function substr;
 
+use const FILTER_VALIDATE_INT;
+
 /**
  * An arbitrary-size integer.
  *
@@ -979,9 +982,9 @@ 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

@@ -17,14 +17,16 @@
 use function assert;
 use function is_float;
 use function is_int;
+use function is_nan;
 use function ltrim;
 use function preg_match;
 use function str_contains;
 use function str_repeat;
-use function strlen;
 
+use function strlen;
 use const PHP_INT_MAX;
 use const PHP_INT_MIN;
+
 use const PREG_UNMATCHED_AS_NULL;
 
 /**
@@ -456,7 +458,11 @@ 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, '/')) {