From 7cdb3cdce14f1394d0fe07cd18ae6eb8c5af9ae0 Mon Sep 17 00:00:00 2001
From: Bartosz Grabowski <58475557+bartosz-grabowski@users.noreply.github.com>
Date: Sat, 22 Feb 2025 12:21:09 +0100
Subject: [PATCH] Fix argument type checking in add and subtract

---
 basicmath/ops/addition.py    | 2 +-
 basicmath/ops/subtraction.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/basicmath/ops/addition.py b/basicmath/ops/addition.py
index 3e78528..8054b20 100644
--- a/basicmath/ops/addition.py
+++ b/basicmath/ops/addition.py
@@ -5,6 +5,6 @@
 
 def add(a: Number, b: Number) -> Number:
     """Returns the sum of a & b."""
-    if (not isinstance(a, Number)) or (not isinstance(a, Number)):
+    if (not isinstance(a, Number)) or (not isinstance(b, Number)):
         raise TypeError
     return a + b
diff --git a/basicmath/ops/subtraction.py b/basicmath/ops/subtraction.py
index a2d603a..705f73b 100644
--- a/basicmath/ops/subtraction.py
+++ b/basicmath/ops/subtraction.py
@@ -5,6 +5,6 @@
 
 def subtract(a: Number, b: Number) -> Number:
     """Returns the difference of a & b."""
-    if (not isinstance(a, Number)) or (not isinstance(a, Number)):
+    if (not isinstance(a, Number)) or (not isinstance(b, Number)):
         raise TypeError
     return a - b