tests/tests.R

In PRIMME: Eigenvalues and Singular Values and Vectors from Large Matrices

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# File: tests.R
# 
# Purpose - Test functions provided by the library
# 
#*****************************************************************************

require(PRIMME)

# Test for dense and sparse matrices

As <- list(diag(1:100), diag(as.complex(1:100)));
if (requireNamespace("Matrix", quietly = TRUE))
   As[[3]] <- Matrix::Matrix(diag(1:100), sparse=TRUE);

for (i in 1:length(As)) {
   A = As[[i]];
   d <- eigs_sym(A, 3);
   stopifnot(all.equal(c(100,99,98), d$values, tolerance=1e-7));

   d <- svds(A, 3);
   stopifnot(all.equal(c(100,99,98), d$d, tolerance=1e-7));
}