**nms_test**,
a Fortran90 code which
calls nms(), which
includes a wide variety of numerical software, including
solvers for linear systems of equations,
a piecewise Hermie cubic (PWH) interpolation package (PCHIP),
numerical quadrature, linear least squares data fitting,
the solution of nonlinear equations,
ordinary differential equations (ODE),
optimization and nonlinear least squares (NLS), simulation and random
numbers, trigonometric approximation and Fast Fourier Transforms (FFT).

The computer code and data files made available on this web page are distributed under the MIT license.

nms, a Fortran90 code which includes a wide variety of numerical software, including solvers for linear systems of equations, a Piecewise Cubic Hermite Interpolation Package (PCHIP), numerical quadrature, linear least squares data fitting, the solution of nonlinear equations, ordinary differential equations (ODE's), optimization and nonlinear least squares (NLS), simulation and random numbers, trigonometric approximation and Fast Fourier Transforms (FFT).

- nms_test.f90, the calling program;
- nms_test.sh, runs all the tests.
- nms_test.txt, the output file.

- co2.txt, sample data needed for a test.
- elnino.txt, sample data needed for a test.
- sunspot.txt, sample data needed for a test.