From 6836c8488897a2acafa8caafe4b9457c13a89f55 Mon Sep 17 00:00:00 2001
From: MarkBaker <mark@demon-angel.eu>
Date: Sun, 12 Mar 2023 13:12:05 +0100
Subject: [PATCH] Apply strict type checking to Complex suffix

---
 src/PhpSpreadsheet/Calculation/Engineering/Complex.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PhpSpreadsheet/Calculation/Engineering/Complex.php b/src/PhpSpreadsheet/Calculation/Engineering/Complex.php
index 691de8b70..f7ec02d43 100644
--- a/src/PhpSpreadsheet/Calculation/Engineering/Complex.php
+++ b/src/PhpSpreadsheet/Calculation/Engineering/Complex.php
@@ -49,7 +49,7 @@ class Complex
             return $e->getMessage();
         }
 
-        if (($suffix == 'i') || ($suffix == 'j') || ($suffix == '')) {
+        if (($suffix === 'i') || ($suffix === 'j') || ($suffix === '')) {
             $complex = new ComplexObject($realNumber, $imaginary, $suffix);
 
             return (string) $complex;