From 351148e35a82a68efcf705ac31211357c48d8fae Mon Sep 17 00:00:00 2001
From: danielward27 <danielward27@outlook.com>
Date: Thu, 13 Feb 2025 09:35:40 +0000
Subject: [PATCH] Fix numerical inverse log det

---
 flowjax/bijections/utils.py              | 2 +-
 tests/test_bijections/test_bijections.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/flowjax/bijections/utils.py b/flowjax/bijections/utils.py
index 50f26a0..5f46e5d 100644
--- a/flowjax/bijections/utils.py
+++ b/flowjax/bijections/utils.py
@@ -299,4 +299,4 @@ def transform_and_log_det(self, x, condition=None):
     def inverse_and_log_det(self, y, condition=None):
         x = self.inverter(self.bijection, y, condition)
         _, log_det = self.bijection.transform_and_log_det(x, condition)
-        return x, log_det
+        return x, -log_det
diff --git a/tests/test_bijections/test_bijections.py b/tests/test_bijections/test_bijections.py
index 24de4d9..46cc3d8 100644
--- a/tests/test_bijections/test_bijections.py
+++ b/tests/test_bijections/test_bijections.py
@@ -212,7 +212,7 @@
         cond_shape=(),
     ),
     "NumericalInverse": lambda: NumericalInverse(
-        Affine(5),
+        Affine(5, 2),
         root_finder_to_inverter(
             partial(bisection_search, lower=-1, upper=1, atol=1e-7),
         ),