Improve conditioning of "natural" system matrix #73
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When constructing a recombined basis obeying natural boundary conditions, we now normalise the computed derivatives of B-splines at the boundaries so that the resulting linear systems (needed to obtain recombination coefficients) are better conditioned. The improvements are most important when using splines of high order. Closes #71.
Codecov Report
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Coverage 95.38% 95.38%
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Files 35 35
Lines 2187 2190 +3
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+ Hits 2086 2089 +3
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When constructing a recombined basis obeying natural boundary conditions, we now normalise the computed derivatives of B-splines at the boundaries so that the resulting linear systems (needed to obtain recombination coefficients) are better conditioned. The improvements are most important when using splines of high order.
Closes #71.