The software is structured in different modules
- ufileformat: Binary output and input of large 1D, 2D or 3D matrices in the GHER or NetCDF.
- initfile: Input of integers, floating numbers, strings and small vectors of those data types.
- matoper: Basic matrix operating: multiplication, matrix inversion, eigenvalue/eigenvectors and singular value decomposition (relying on BLAS and LAPACK).
- date: module for conversion between modified Julian day number and Gregorian date.
- grids: interpolation from one grid to another of 1D, 2D or 3D data.
- rrsqrt: The analysis equation
- assimilation: I/O of state vector, observations, error space and observation operator. Analysis routine with input/output and computation of diagnostics.
These modules can be either used for specific task with standalone programs or by
a hydrodynamic model in the case of a simulation assimilating observations."
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