diff --git a/lib/cast_to_int.php b/lib/cast_to_int.php
index f7f1960..474ce64 100644
--- a/lib/cast_to_int.php
+++ b/lib/cast_to_int.php
@@ -44,10 +44,7 @@
      */
     function RandomCompat_intval($number, $fail_open = false)
     {
-        if (
-            is_string($number) &&
-            preg_match('#^\-?[0-9]+\.?[0-9]*$#', $number)
-        ) {
+        if (is_numeric($number)) {
             $number += 0;
         }
         if (
@@ -55,11 +52,7 @@ function RandomCompat_intval($number, $fail_open = false)
             $number > ~PHP_INT_MAX &&
             $number < PHP_INT_MAX
         ) {
-            $number = (int) (
-                $number < 0
-                    ? ceil($number)
-                    : floor($number)
-            );
+            $number = (int) $number;
         }
         if (is_int($number) || $fail_open) {
             return $number;
diff --git a/lib/random_bytes_libsodium.php b/lib/random_bytes_libsodium.php
index 43317d2..796ba6a 100644
--- a/lib/random_bytes_libsodium.php
+++ b/lib/random_bytes_libsodium.php
@@ -58,6 +58,7 @@ function random_bytes($bytes)
      * generated in one invocation.
      */
     if ($bytes > 2147483647) {
+        $buf = '';
         for ($i = 0; $i < $bytes; $i += 1073741824) {
             $n = ($bytes - $i) > 1073741824
                 ? 1073741824
diff --git a/tests/unit/RandomIntTest.php b/tests/unit/RandomIntTest.php
index c61f698..f9fc3c3 100644
--- a/tests/unit/RandomIntTest.php
+++ b/tests/unit/RandomIntTest.php
@@ -19,7 +19,8 @@ public function testOutput()
             random_int(0.11111, 0.99999),
             random_int($half_neg_max, PHP_INT_MAX),
             random_int(0.0, 255.0),
-            random_int(-4.5, -4.5)
+            random_int(-4.5, -4.5),
+            random_int("1337e3","1337e3")
         );
         
         $this->assertFalse($integers[0] === $integers[1]);
@@ -33,6 +34,7 @@ public function testOutput()
         $this->assertTrue($integers[7] >= $half_neg_max && $integers[7] <= PHP_INT_MAX);
         $this->assertTrue($integers[8] >= 0 && $integers[8] <= 255);
         $this->assertTrue($integers[9] === -4);
+        $this->assertTrue($integers[10] === 1337000);
         
         try {
             $h = random_int("2147483648", "2147483647");
diff --git a/tests/unit/UtilityTest.php b/tests/unit/UtilityTest.php
index 54da8c3..294a801 100644
--- a/tests/unit/UtilityTest.php
+++ b/tests/unit/UtilityTest.php
@@ -34,6 +34,12 @@ public function testIntval()
         $this->assertTrue(
             is_int(RandomCompat_intval(~PHP_INT_MAX + 1, true))
         );
+        $this->assertTrue(
+            is_int(RandomCompat_intval("1337e3", true))
+        );
+        $this->assertTrue(
+            is_int(RandomCompat_intval("1.", true))
+        );
         
         // False
         $this->assertFalse(
@@ -54,13 +60,22 @@ public function testIntval()
         $this->assertFalse(
             is_int(RandomCompat_intval(PHP_INT_MAX + 0.1, true))
         );
+        $this->assertFalse(
+            is_int(RandomCompat_intval("hello", true))
+        );
         
         if (PHP_INT_SIZE === 8) {
+            $this->assertFalse(
+                is_int(RandomCompat_intval("-9223372036854775809", true))
+            );
             $this->assertTrue(
-                is_int(RandomCompat_intval("-9223372036854775807", true))
+                is_int(RandomCompat_intval("-9223372036854775808", true))
+            );
+            $this->assertFalse(
+                is_int(RandomCompat_intval("9223372036854775808", true))
             );
             $this->assertTrue(
-                is_int(RandomCompat_intval("9223372036854775806", true))
+                is_int(RandomCompat_intval("9223372036854775807", true))
             );
         } else {
             $this->assertFalse(