static void test_meancov()
{
double A[] = {1.,2., 3.,3., 8.,12.}; // 2x3
double e[4], mu[2], At[6];
double mu_r[2] = {4, 5.6666667};
double e_r[] = {13.,19.5, 19.5,30.333333};
aa_la_d_colmean( 2, 3, A, 2, mu);
aveq( "colmean", 2, mu, mu_r, 1e-6);
aa_la_d_transpose(2,3,A,2, At,3);
printf("\n");
aa_dump_mat( stdout, A, 2,3);
printf("\n");
aa_dump_mat( stdout, At, 3,2);
printf("\n");
aa_la_d_rowmean( 3, 2, At, 3, mu);
aveq( "rowmean", 2, mu, mu_r, 1e-6);
aa_la_d_colcov( 2, 3, A, 2, mu, e, 2);
aveq( "colcov", 4, e, e_r, 1e-6);
}
void aa_stat_vmean( size_t m, size_t n, const double *X, double *mu) {
aa_la_d_colmean( m, n, X, m, mu );
}
