diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 478cc0a..6e2e0bf 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -115,6 +115,8 @@ jobs:
           sudo -u postgres make prove_installcheck
         env:
           PG_CFLAGS: -DUSE_ASSERT_CHECKING -Wall -Wextra -Werror -Wno-unused-parameter -Wno-sign-compare
+      - if: ${{ failure() }}
+        run: cat pgvector/regression.diffs
   valgrind:
     if: ${{ !startsWith(github.ref_name, 'mac') && !startsWith(github.ref_name, 'windows') }}
     runs-on: ubuntu-latest
diff --git a/src/sparsevec.c b/src/sparsevec.c
index 82b52a1..073e031 100644
--- a/src/sparsevec.c
+++ b/src/sparsevec.c
@@ -594,12 +594,12 @@ vector_to_sparsevec(PG_FUNCTION_ARGS)
 /*
  * Get the L2 squared distance between sparse vectors
  */
-static double
+static float
 SparsevecL2SquaredDistance(SparseVector * a, SparseVector * b)
 {
 	float	   *ax = SPARSEVEC_VALUES(a);
 	float	   *bx = SPARSEVEC_VALUES(b);
-	double		distance = 0.0;
+	float		distance = 0.0;
 	int			bpos = 0;
 
 	for (int i = 0; i < a->nnz; i++)
@@ -673,12 +673,12 @@ sparsevec_l2_squared_distance(PG_FUNCTION_ARGS)
 /*
  * Get the inner product of two sparse vectors
  */
-static double
+static float
 SparsevecInnerProduct(SparseVector * a, SparseVector * b)
 {
 	float	   *ax = SPARSEVEC_VALUES(a);
 	float	   *bx = SPARSEVEC_VALUES(b);
-	double		distance = 0.0;
+	float		distance = 0.0;
 	int			bpos = 0;
 
 	for (int i = 0; i < a->nnz; i++)