5 November 2012 9:20:31.948 PM CORRELATION_PRB Fortran90 version. Test the CORRELATION library. CORRELATION_TEST02 SAMPLE_PATHS_CHOLESKY generates a sample paths from the correlation matrix, factored using the Cholesky factor. Plot sample paths for a given correlation function. R8MAT_CHOLESKY_FACTOR - Fatal error! Matrix is not nonnegative definite. Diagonal I = 13 SUM2 = -0.272309E-07 SAMPLE_PATH_CHOLESKY - Fatal error! The correlation matrix is not symmetric nonnegative definite.