From fc10b363b3c35313ac2f1bf14f83daec2bf22c41 Mon Sep 17 00:00:00 2001
From: Thomas Albers Raviola <thomas@thomaslabs.org>
Date: Tue, 4 Jun 2024 11:26:32 +0200
Subject: Throw exception on linear dependence

---
 solvers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'solvers.py')

diff --git a/solvers.py b/solvers.py
index 72f1b1d..38ac247 100644
--- a/solvers.py
+++ b/solvers.py
@@ -92,7 +92,7 @@ def gaussian_eliminate(
         aa: NDArray[np.float_],
         bb: NDArray[np.float_],
         tolerance: float = 1e-6
-) -> NDArray[np.float_] | None:
+) -> NDArray[np.float_]:
     '''Solves a linear system of equations (A x = b) by LUP factorization.
 
     Args:
@@ -108,7 +108,7 @@ def gaussian_eliminate(
     nn = uu.shape[0]
     # Check if rank of matrix is lower than nn
     if np.abs(uu[nn - 1, nn - 1]) < tolerance:
-        return None
+        raise ValueError
 
     # L y = P @ b
     y = forward_substitution(ll, pp @ bb)
-- 
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