From c449ae346c8ce38cf411797594eb9fda18576d8a Mon Sep 17 00:00:00 2001
From: "S. Hi" <128063668+blackborn66@users.noreply.github.com>
Date: Wed, 29 Mar 2023 12:23:41 +0200
Subject: [PATCH 1/2] problem with unary operators solved

---
 MathParser.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MathParser.cs b/MathParser.cs
index 175ac37..9af29d8 100644
--- a/MathParser.cs
+++ b/MathParser.cs
@@ -305,7 +305,7 @@ private string LexicalAnalysisInfixNotation(string expression, ref int pos)
             if (supportedOperators.ContainsKey(token.ToString()))
             {
                 // Determine it is unary or binary operator
-                bool isUnary = pos == 0 || expression[pos - 1] == '(';
+                bool isUnary = pos == 0 || expression[pos - 1] == '(' || supportedOperators.ContainsKey(expression[pos - 1].ToString());
                 pos++;
 
                 switch (token.ToString())
@@ -739,4 +739,4 @@ private int NumberOfArguments(string token)
 
         #endregion
     }
-}
\ No newline at end of file
+}

From 2d4dd55e29089eb32f85c66091f39da317b81f31 Mon Sep 17 00:00:00 2001
From: "S. Hi" <128063668+blackborn66@users.noreply.github.com>
Date: Thu, 30 Mar 2023 12:18:25 +0200
Subject: [PATCH 2/2] ")" was wrong in my former changes

---
 MathParser.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MathParser.cs b/MathParser.cs
index 9af29d8..01e11a7 100644
--- a/MathParser.cs
+++ b/MathParser.cs
@@ -305,7 +305,7 @@ private string LexicalAnalysisInfixNotation(string expression, ref int pos)
             if (supportedOperators.ContainsKey(token.ToString()))
             {
                 // Determine it is unary or binary operator
-                bool isUnary = pos == 0 || expression[pos - 1] == '(' || supportedOperators.ContainsKey(expression[pos - 1].ToString());
+                bool isUnary = pos == 0 || "+-*/^(".Contains(expression[pos - 1].ToString());
                 pos++;
 
                 switch (token.ToString())