The API can be used to extend CVXOPT with interfaces to external C routines and libraries. A C program that creates or manipulates the dense or sparse matrix objects defined in cvxopt.base must include the cvxopt.h header file in the src directory of the distribution.

Before the C API can be used in an extension module it must be initialized by calling the macro import_cvxopt. As an example we show the module initialization from the cvxopt.blas module, which itself uses the API:

PyMODINIT_FUNC initblas(void)
{
  PyObject *m;

  m = Py_InitModule3("cvxopt.blas", blas_functions, blas__doc__);

  if (import_cvxopt() < 0)
    return;
}

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Subsections

• A.1 Dense Matrices
• A.2 Sparse Matrices