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Mathias Bavay authored
Several speed optimizations have been brought to the 2D interpolations (using the const keyword when possible, etc). The Quake3 1/x^2 approximation has been implemented for the IDW_core and brings a slight loss of precision (1e-6 in relative error in real life tests) while boasting a huge reduction of computational time (factor of 3 when called within Alpine3D with its own overhead). The documentation can now be build and not installed (instead of linking building and installation as previously done)
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