From 2277f4182782a53f33cb3a4ae2bbd9dae987c5cc Mon Sep 17 00:00:00 2001
From: carbotaniuman <41451839+carbotaniuman@users.noreply.github.com>
Date: Wed, 18 Nov 2020 09:15:19 -0600
Subject: [PATCH] Actually fix negative check

---
 vm/src/builtins/int.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/vm/src/builtins/int.rs b/vm/src/builtins/int.rs
index ddf287f64..4bab115de 100644
--- a/vm/src/builtins/int.rs
+++ b/vm/src/builtins/int.rs
@@ -425,10 +425,13 @@ impl PyInt {
                 if modulus.is_zero() {
                     return Err(vm.new_value_error("pow() 3rd argument cannot be 0".to_owned()));
                 }
-                if modulus.is_negative() {
-                    return Err(vm.new_not_implemented_error("modular inverses".to_owned()));
-                }
-                self.general_op(other, |a, b| Ok(vm.ctx.new_int(a.modpow(b, modulus))), vm)
+                self.general_op(other, |a, b| {
+                    if b.is_negative() {
+                        Err(vm.new_not_implemented_error("modular inverses".to_owned()))
+                    } else {
+                        Ok(vm.ctx.new_int(a.modpow(b, modulus)))
+                    }
+                }, vm)
             }
             None => self.general_op(other, |a, b| inner_pow(a, b, vm), vm),
         }