TEST_INTERP_ND, a C++ code which provides test functions for multidimensional interpolation.
All the functions are defined over the unit hypercube [0,1]^M, for arbitrary spatial dimension M. They include:
For each function, methods are provided to evaluate:
Most of the functions include a shift vector w whose entries can be chosen randomly in the unit hypercube, and a coefficient vector c whose entries should be positive, and for which the integration problem becomes harder as the sum of the entries increases.
TEST_INTERP_ND requires access to the R8LIB library.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
TEST_INTERP_ND is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version.
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SPARSE_INTERP_ND a C++ library which can be used to define a sparse interpolant to a function f(x) of a multidimensional argument.
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