Function called from within NEST so usually no call to this is needed by the user. Provides a C++ implementation of the NEST simulation procedure
.nest_sym(nf, N, M, nreps = 1000L)
numeric. Current number of factors.
numeric. Number of cases / observations in dataset.
numeric matrix. A transposed matrix of cbind(loadings, diag(sqrt(uniquenesses))).
numeric. Number of datasets to create.