From dae76f3d56f846bca325f7fd7e7e0f5f2d775f1e Mon Sep 17 00:00:00 2001
From: Mark <mark@betalupi.com>
Date: Wed, 7 Jun 2023 15:21:36 -0700
Subject: [PATCH] Added check for negative powers

---
 src/tests.rs           | 1 +
 src/tokens/operator.rs | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/src/tests.rs b/src/tests.rs
index a8ddfd0..e62eadf 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -171,6 +171,7 @@ fn operators() {
 	good_expr("7", "3!+1");
 	good_expr("18", "3!3");
 	bad_expr("3.1!");
+	bad_expr("0^(-1)");
 	bad_expr("pi!");
 }
 
diff --git a/src/tokens/operator.rs b/src/tokens/operator.rs
index 07b2c39..1473161 100644
--- a/src/tokens/operator.rs
+++ b/src/tokens/operator.rs
@@ -460,6 +460,10 @@ impl Operator{
 							return Err(EvalError::IncompatibleUnit);
 						}
 
+						if va.is_zero() && vb.is_negative() {
+							return Err(EvalError::ZeroDivision);
+						}
+
 						let p = va.pow(vb);
 						if p.is_nan() {return Err(EvalError::BadMath);}
 						return Ok(Token::Number(p));