Fix eigenvalue solver for complex matrices
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@ -64,7 +64,7 @@ def solve_waveguide_mode_2d(mode_number: int,
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eigval = None
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for _ in range(40):
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eigval = v @ A @ v
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eigval = v.conj() @ A @ v
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if numpy.linalg.norm(A @ v - eigval * v) < 1e-13:
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break
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w = spalg.spsolve(A - eigval * sparse.eye(A.shape[0]), v)
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