real
norm2chol_sparsematrix(pchmatrix LU, pcsparsematrix sp)
{
avector tmp1, tmp2;
uint rows = LU->rc->size;
uint cols = LU->cc->size;
pavector x, y;
real norm;
uint j;
assert(sp->rows == rows);
assert(sp->cols == cols);
x = init_avector(&tmp1, cols);
y = init_avector(&tmp2, rows);
random_avector(x);
norm = norm2_avector(x);
scale_avector(1.0 / norm, x);
for (j = 0; j < NORM_STEPS; j++) {
// printf("norm = %g \n", sqrt( norm));
clear_avector(y);
mvm_sparsematrix_avector(1.0, false, sp, x, y);
triangularsolve_hmatrix_avector(true, false, false, LU, y);
triangularsolve_hmatrix_avector(true, false, true, LU, y);
add_avector(-1.0, y, x);
copy_avector(x, y);
triangularsolve_hmatrix_avector(true, false, false, LU, y);
triangularsolve_hmatrix_avector(true, false, true, LU, y);
mvm_sparsematrix_avector(-1.0, true, sp, y, x);
norm = norm2_avector(x);
scale_avector(1.0 / norm, x);
}
uninit_avector(y);
uninit_avector(x);
return REAL_SQRT(norm);
}
static void
check_triangularsolve(bool lower, bool unit, bool atrans,
pcamatrix a, bool xtrans)
{
uint n = a->rows;
amatrix xtmp, btmp;
pamatrix x, b;
avector xvtmp, bvtmp;
pavector xv, bv;
real error;
assert(n == a->cols);
/*
* amatrix
*/
x = init_amatrix(&xtmp, n, n);
random_amatrix(x);
b = init_zero_amatrix(&btmp, n, n);
if (xtrans)
addmul_amatrix(1.0, false, x, !atrans, a, b);
else
addmul_amatrix(1.0, atrans, a, false, x, b);
triangularsolve_amatrix(lower, unit, atrans, a, xtrans, b);
add_amatrix(-1.0, false, x, b);
error = norm2_amatrix(b) / norm2_amatrix(x);
(void) printf("Checking amatrix triangularsolve\n"
" (lower=%s, unit=%s, atrans=%s, xtrans=%s)\n"
" Accuracy %g, %sokay\n", (lower ? "tr" : "fl"),
(unit ? "tr" : "fl"), (atrans ? "tr" : "fl"),
(xtrans ? "tr" : "fl"), error,
(IS_IN_RANGE(0.0, error, 1.0e-14) ? "" : " NOT "));
if (!IS_IN_RANGE(0.0, error, 1.0e-14))
problems++;
copy_amatrix(false, x, b);
triangulareval_amatrix(lower, unit, atrans, a, xtrans, b);
triangularsolve_amatrix(lower, unit, atrans, a, xtrans, b);
add_amatrix(-1.0, false, x, b);
error = norm2_amatrix(b) / norm2_amatrix(x);
(void) printf("Checking amatrix triangulareval/triangularsolve\n"
" (lower=%s, unit=%s, atrans=%s, xtrans=%s):\n"
" Accuracy %g, %sokay\n", (lower ? "tr" : "fl"),
(unit ? "tr" : "fl"), (atrans ? "tr" : "fl"),
(xtrans ? "tr" : "fl"), error,
(IS_IN_RANGE(0.0, error, 1.0e-14) ? "" : " NOT "));
if (!IS_IN_RANGE(0.0, error, 1.0e-14))
problems++;
/*
* avector
*/
xv = init_avector(&xvtmp, n);
random_avector(xv);
bv = init_avector(&bvtmp, n);
clear_avector(bv);
if (atrans) {
addevaltrans_amatrix_avector(1.0, a, xv, bv);
}
else {
addeval_amatrix_avector(1.0, a, xv, bv);
}
triangularsolve_amatrix_avector(lower, unit, atrans, a, bv);
add_avector(-1.0, xv, bv);
error = norm2_avector(bv) / norm2_avector(xv);
(void) printf("Checking avector triangularsolve\n"
" (lower=%s, unit=%s, atrans=%s)\n"
" Accuracy %g, %sokay\n", (lower ? "tr" : "fl"),
(unit ? "tr" : "fl"), (atrans ? "tr" : "fl"), error,
(IS_IN_RANGE(0.0, error, 1.0e-14) ? "" : " NOT "));
if (!IS_IN_RANGE(0.0, error, 1.0e-14))
problems++;
copy_avector(xv, bv);
triangulareval_amatrix_avector(lower, unit, atrans, a, bv);
triangularsolve_amatrix_avector(lower, unit, atrans, a, bv);
add_avector(-1.0, xv, bv);
error = norm2_avector(bv) / norm2_avector(xv);
(void) printf("Checking avector triangulareval/triangularsolve\n"
" (lower=%s, unit=%s, atrans=%s):\n"
" Accuracy %g, %sokay\n", (lower ? "tr" : "fl"),
(unit ? "tr" : "fl"), (atrans ? "tr" : "fl"), error,
(IS_IN_RANGE(0.0, error, 1.0e-14) ? "" : " NOT "));
if (!IS_IN_RANGE(0.0, error, 1.0e-14))
problems++;
uninit_amatrix(b);
uninit_amatrix(x);
uninit_avector(bv);
uninit_avector(xv);
}
int
main()
{
pamatrix a, acopy, l, ld, r, q, qr;
pavector x, b, tau;
uint rows, cols;
real error;
rows = 8;
cols = 5;
(void) printf("----------------------------------------\n"
"Check random %u x %u Cholesky factorization\n", rows, rows);
(void) printf("Creating random self-adjoint positive definite matrix\n");
a = new_amatrix(rows, rows);
random_spd_amatrix(a, 1.0);
(void) printf("Creating random solution and right-hand side\n");
x = new_avector(rows);
random_avector(x);
b = new_avector(rows);
clear_avector(b);
mvm_amatrix_avector(1.0, false, a, x, b);
(void) printf("Copying matrix\n");
acopy = new_amatrix(rows, rows);
copy_amatrix(false, a, acopy);
(void) printf("Computing Cholesky factorization\n");
choldecomp_amatrix(a);
(void) printf("Solving\n");
cholsolve_amatrix_avector(a, b);
add_avector(-1.0, x, b);
error = norm2_avector(b);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
(void) printf("Building triangular factor\n");
l = new_amatrix(rows, rows);
copy_lower_amatrix(a, false, l);
(void) printf("Checking factorization\n");
copy_amatrix(false, acopy, a);
addmul_amatrix(-1.0, false, l, true, l, a);
error = normfrob_amatrix(a);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
del_amatrix(l);
del_amatrix(acopy);
del_avector(b);
del_avector(x);
del_amatrix(a);
(void) printf("----------------------------------------\n"
"Check random %u x %u LDL^T factorization\n", rows, rows);
(void) printf("Creating random self-adjoint positive definite matrix\n");
a = new_amatrix(rows, rows);
random_spd_amatrix(a, 1.0);
(void) printf("Creating random solution and right-hand side\n");
x = new_avector(rows);
random_avector(x);
b = new_avector(rows);
clear_avector(b);
mvm_amatrix_avector(1.0, false, a, x, b);
(void) printf("Copying matrix\n");
acopy = new_amatrix(rows, rows);
copy_amatrix(false, a, acopy);
(void) printf("Computing LDL^T factorization\n");
ldltdecomp_amatrix(a);
(void) printf("Solving\n");
ldltsolve_amatrix_avector(a, b);
add_avector(-1.0, x, b);
error = norm2_avector(b);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
(void) printf("Building triangular factor\n");
l = new_amatrix(rows, rows);
copy_lower_amatrix(a, true, l);
(void) printf("Multiplying by diagonal\n");
ld = new_amatrix(rows, rows);
copy_amatrix(false, l, ld);
diageval_amatrix(true, a, true, ld);
(void) printf("Checking factorization\n");
copy_amatrix(false, acopy, a);
addmul_amatrix(-1.0, false, ld, true, l, a);
error = normfrob_amatrix(a);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
del_amatrix(ld);
del_amatrix(l);
del_amatrix(acopy);
del_avector(b);
del_avector(x);
del_amatrix(a);
(void) printf("----------------------------------------\n"
"Check random %u x %u LR factorization\n", rows, rows);
(void) printf("Creating random invertible matrix\n");
a = new_amatrix(rows, rows);
random_invertible_amatrix(a, 1.0);
(void) printf("Creating random solution and right-hand side\n");
x = new_avector(rows);
random_avector(x);
b = new_avector(rows);
clear_avector(b);
mvm_amatrix_avector(1.0, false, a, x, b);
(void) printf("Copying matrix\n");
acopy = new_amatrix(rows, rows);
copy_amatrix(false, a, acopy);
(void) printf("Computing LR factorization\n");
lrdecomp_amatrix(a);
(void) printf("Solving\n");
lrsolve_amatrix_avector(a, b);
add_avector(-1.0, x, b);
error = norm2_avector(b);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
(void) printf("Building triangular factors\n");
l = new_amatrix(rows, rows);
r = new_amatrix(rows, rows);
copy_lower_amatrix(a, true, l);
copy_upper_amatrix(a, false, r);
(void) printf("Checking factorization\n");
copy_amatrix(false, acopy, a);
addmul_amatrix(-1.0, false, l, false, r, a);
error = normfrob_amatrix(a);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
/* Check forward/backward substitution */
(void) printf("----------------------------------------\n");
check_triangularsolve(true, true, false, l, false);
check_triangularsolve(true, true, false, l, true);
check_triangularsolve(true, true, true, l, false);
check_triangularsolve(true, true, true, l, true);
check_triangularsolve(true, false, false, l, false);
check_triangularsolve(true, false, false, l, true);
check_triangularsolve(true, false, true, l, false);
check_triangularsolve(true, false, true, l, true);
check_triangularsolve(false, false, false, r, false);
check_triangularsolve(false, false, false, r, true);
check_triangularsolve(false, false, true, r, false);
check_triangularsolve(false, false, true, r, true);
set_unit(r);
check_triangularsolve(false, true, false, r, false);
check_triangularsolve(false, true, false, r, true);
check_triangularsolve(false, true, true, r, false);
check_triangularsolve(false, true, true, r, true);
/* Intermediate clean-up */
(void) printf("Cleaning up\n");
del_amatrix(r);
del_amatrix(l);
/* Check triangular matrix multiplication */
(void) printf("----------------------------------------\n");
check_triangularaddmul(false, false, false, false);
check_triangularaddmul(true, false, false, false);
check_triangularaddmul(false, true, false, false);
check_triangularaddmul(true, true, false, false);
check_triangularaddmul(false, false, true, false);
check_triangularaddmul(true, false, true, false);
check_triangularaddmul(false, true, true, false);
check_triangularaddmul(true, true, true, false);
check_triangularaddmul(false, false, false, true);
check_triangularaddmul(true, false, false, true);
check_triangularaddmul(false, true, false, true);
check_triangularaddmul(true, true, false, true);
check_triangularaddmul(false, false, true, true);
check_triangularaddmul(true, false, true, true);
check_triangularaddmul(false, true, true, true);
check_triangularaddmul(true, true, true, true);
/* Checking QR factorization */
(void) printf("----------------------------------------\n"
"Check square QR factorization\n");
copy_amatrix(false, acopy, a);
random_avector(x);
clear_avector(b);
mvm_amatrix_avector(1.0, false, a, x, b);
tau = new_avector(rows);
qrdecomp_amatrix(a, tau);
(void) printf("Solving\n");
qrsolve_amatrix_avector(a, tau, b);
add_avector(-1.0, x, b);
error = norm2_avector(b);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
q = new_amatrix(rows, rows);
qrexpand_amatrix(a, tau, q);
(void) printf("Checking factorization\n");
r = new_amatrix(rows, rows);
copy_upper_amatrix(a, false, r);
qr = new_amatrix(rows, rows);
copy_amatrix(false, acopy, qr);
addmul_amatrix(-1.0, false, q, false, r, qr);
error = normfrob_amatrix(qr);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
(void) printf("Checking inverse\n");
copy_amatrix(false, acopy, a);
qrinvert_amatrix(a);
identity_amatrix(qr);
addmul_amatrix(-1.0, false, acopy, false, a, qr);
error = normfrob_amatrix(qr);
(void) printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
/* Intermediate clean-up */
(void) printf("Cleaning up\n");
del_amatrix(qr);
del_amatrix(r);
del_amatrix(q);
del_avector(tau);
del_avector(b);
del_avector(x);
del_amatrix(acopy);
del_amatrix(a);
/* Check forward/backward evaluation */
(void) printf("----------------------------------------\n");
a = new_amatrix(rows, cols);
random_amatrix(a);
check_lowereval(false, false, a, false);
check_lowereval(false, false, a, true);
check_lowereval(false, true, a, false);
check_lowereval(false, true, a, true);
check_uppereval(false, false, a, false);
check_uppereval(false, false, a, true);
check_uppereval(false, true, a, false);
check_uppereval(false, true, a, true);
set_unit(a);
check_lowereval(true, false, a, false);
check_lowereval(true, false, a, true);
check_lowereval(true, true, a, false);
check_lowereval(true, true, a, true);
check_uppereval(true, false, a, false);
check_uppereval(true, false, a, true);
check_uppereval(true, true, a, false);
check_uppereval(true, true, a, true);
(void) printf("Cleaning up\n");
del_amatrix(a);
a = new_amatrix(cols, rows);
random_amatrix(a);
check_lowereval(false, false, a, false);
check_lowereval(false, false, a, true);
check_lowereval(false, true, a, false);
check_lowereval(false, true, a, true);
check_uppereval(false, false, a, false);
check_uppereval(false, false, a, true);
check_uppereval(false, true, a, false);
check_uppereval(false, true, a, true);
set_unit(a);
check_lowereval(true, false, a, false);
check_lowereval(true, false, a, true);
check_lowereval(true, true, a, false);
check_lowereval(true, true, a, true);
check_uppereval(true, false, a, false);
check_uppereval(true, false, a, true);
check_uppereval(true, true, a, false);
check_uppereval(true, true, a, true);
(void) printf("Cleaning up\n");
del_amatrix(a);
/* Test random QR factorizations */
(void) printf("----------------------------------------\n"
"Check full rectangular QR factorization\n");
a = new_amatrix(rows, cols);
random_amatrix(a);
acopy = new_amatrix(rows, cols);
copy_amatrix(false, a, acopy);
tau = new_avector(rows);
qrdecomp_amatrix(a, tau);
q = new_amatrix(rows, rows);
r = new_amatrix(rows, cols);
qrexpand_amatrix(a, tau, q);
copy_upper_amatrix(a, false, r);
qr = new_amatrix(rows, cols);
copy_amatrix(false, acopy, qr);
addmul_amatrix(-1.0, false, q, false, r, qr);
error = normfrob_amatrix(qr);
printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
del_amatrix(r);
del_amatrix(q);
(void) printf("Check skinny QR factorization\n");
q = new_amatrix(rows, cols);
r = new_amatrix(cols, cols);
qrexpand_amatrix(a, tau, q);
copy_upper_amatrix(a, false, r);
copy_amatrix(false, acopy, qr);
addmul_amatrix(-1.0, false, q, false, r, qr);
error = normfrob_amatrix(qr);
printf(" Accuracy %g, %sokay\n", error,
(error < tolerance ? "" : " NOT "));
if (error >= tolerance)
problems++;
/* Final clean-up */
(void) printf("Cleaning up\n");
del_amatrix(qr);
del_amatrix(r);
del_amatrix(q);
del_avector(tau);
del_amatrix(acopy);
del_amatrix(a);
(void) printf("----------------------------------------\n"
" %u matrices and\n"
" %u vectors still active\n"
" %u errors found\n", getactives_amatrix(),
getactives_avector(), problems);
return problems;
}
int
main()
{
ph2matrix h2, h2copy, L, R;
pclusterbasis rb, cb, rbcopy, cbcopy, rblow, cblow, rbup, cbup;
pclusteroperator rwf, cwf, rwflow, cwflow, rwfup, cwfup, rwfh2, cwfh2;
ptruncmode tm;
pavector x, b;
uint n;
real error;
pcurve2d gr2;
pbem2d bem2;
pcluster root2;
pblock block2;
uint clf, m;
real tol, eta, delta, eps_aca;
n = 579;
tol = 1.0e-13;
clf = 16;
eta = 1.0;
m = 4;
delta = 1.0;
eps_aca = 1.0e-13;
gr2 = new_circle_curve2d(n, 0.333);
bem2 = new_slp_laplace_bem2d(gr2, 2, BASIS_CONSTANT_BEM2D);
root2 = build_bem2d_cluster(bem2, clf, BASIS_CONSTANT_BEM2D);
block2 = build_strict_block(root2, root2, &eta, admissible_max_cluster);
rb = build_from_cluster_clusterbasis(root2);
cb = build_from_cluster_clusterbasis(root2);
setup_h2matrix_aprx_greenhybrid_bem2d(bem2, rb, cb, block2, m, 1, delta,
eps_aca, build_bem2d_rect_quadpoints);
(void) printf("----------------------------------------\n"
"Check %u x %u Cholesky factorization\n", n, n);
(void) printf("Creating laplacebem2d SLP matrix\n");
assemble_bem2d_h2matrix_row_clusterbasis(bem2, rb);
assemble_bem2d_h2matrix_col_clusterbasis(bem2, cb);
h2 = build_from_block_h2matrix(block2, rb, cb);
assemble_bem2d_h2matrix(bem2, block2, h2);
(void) printf("Creating random solution and right-hand side\n");
x = new_avector(n);
random_avector(x);
b = new_avector(n);
clear_avector(b);
mvm_h2matrix_avector(1.0, false, h2, x, b);
(void) printf("Copying matrix\n");
rbcopy = clone_clusterbasis(h2->rb);
cbcopy = clone_clusterbasis(h2->cb);
h2copy = clone_h2matrix(h2, rbcopy, cbcopy);
(void) printf("Computing Cholesky factorization\n");
tm = new_releucl_truncmode();
rblow = build_from_cluster_clusterbasis(root2);
cblow = build_from_cluster_clusterbasis(root2);
L = build_from_block_lower_h2matrix(block2, rblow, cblow);
rwflow = prepare_row_clusteroperator(L->rb, L->cb, tm);
cwflow = prepare_col_clusteroperator(L->rb, L->cb, tm);
rwf = NULL;
cwf = NULL;
init_cholesky_h2matrix(h2, &rwf, &cwf, tm);
choldecomp_h2matrix(h2, rwf, cwf, L, rwflow, cwflow, tm, tol);
(void) printf("Solving\n");
cholsolve_h2matrix_avector(L, b);
add_avector(-1.0, x, b);
error = norm2_avector(b) / norm2_avector(x);
(void) printf(" Accuracy %g, %sokay\n", error,
IS_IN_RANGE(2.0e-13, error, 3.0e-12) ? "" : " NOT ");
if (!IS_IN_RANGE(2.0e-13, error, 3.0e-12))
problems++;
rwfh2 = prepare_row_clusteroperator(h2copy->rb, h2copy->cb, tm);
cwfh2 = prepare_col_clusteroperator(h2copy->rb, h2copy->cb, tm);
(void) printf("Checking factorization\n");
error = norm2_h2matrix(h2copy);
addmul_h2matrix(-1.0, L, true, L, h2copy, rwfh2, cwfh2, tm, tol);
error = norm2_h2matrix(h2copy) / error;
(void) printf(" Accuracy %g, %sokay\n", error,
IS_IN_RANGE(4.0e-15, error, 4.0e-14) ? "" : " NOT ");
if (!IS_IN_RANGE(4.0e-15, error, 4.0e-14))
problems++;
del_h2matrix(h2copy);
del_h2matrix(h2);
del_h2matrix(L);
del_avector(b);
del_avector(x);
del_truncmode(tm);
del_clusteroperator(rwflow);
del_clusteroperator(cwflow);
del_clusteroperator(rwf);
del_clusteroperator(cwf);
del_clusteroperator(rwfh2);
del_clusteroperator(cwfh2);
rb = build_from_cluster_clusterbasis(root2);
cb = build_from_cluster_clusterbasis(root2);
setup_h2matrix_aprx_greenhybrid_bem2d(bem2, rb, cb, block2, m, 1, delta,
eps_aca, build_bem2d_rect_quadpoints);
(void) printf("----------------------------------------\n"
"Check %u x %u LR factorization\n", n, n);
(void) printf("Creating laplacebem2d SLP matrix\n");
assemble_bem2d_h2matrix_row_clusterbasis(bem2, rb);
assemble_bem2d_h2matrix_col_clusterbasis(bem2, cb);
h2 = build_from_block_h2matrix(block2, rb, cb);
assemble_bem2d_h2matrix(bem2, block2, h2);
(void) printf("Creating random solution and right-hand side\n");
x = new_avector(n);
random_avector(x);
b = new_avector(n);
clear_avector(b);
mvm_h2matrix_avector(1.0, false, h2, x, b);
(void) printf("Copying matrix\n");
rbcopy = clone_clusterbasis(h2->rb);
cbcopy = clone_clusterbasis(h2->cb);
h2copy = clone_h2matrix(h2, rbcopy, cbcopy);
(void) printf("Computing LR factorization\n");
rblow = build_from_cluster_clusterbasis(root2);
cblow = build_from_cluster_clusterbasis(root2);
L = build_from_block_lower_h2matrix(block2, rblow, cblow);
rbup = build_from_cluster_clusterbasis(root2);
cbup = build_from_cluster_clusterbasis(root2);
R = build_from_block_upper_h2matrix(block2, rbup, cbup);
tm = new_releucl_truncmode();
rwf = prepare_row_clusteroperator(h2->rb, h2->cb, tm);
cwf = prepare_col_clusteroperator(h2->rb, h2->cb, tm);
rwflow = prepare_row_clusteroperator(L->rb, L->cb, tm);
cwflow = prepare_col_clusteroperator(L->rb, L->cb, tm);
rwfup = prepare_row_clusteroperator(R->rb, R->cb, tm);
cwfup = prepare_col_clusteroperator(R->rb, R->cb, tm);
lrdecomp_h2matrix(h2, rwf, cwf, L, rwflow, cwflow, R, rwfup, cwfup, tm,
tol);
(void) printf("Solving\n");
lrsolve_h2matrix_avector(L, R, b);
add_avector(-1.0, x, b);
error = norm2_avector(b) / norm2_avector(x);
(void) printf(" Accuracy %g, %sokay\n", error,
IS_IN_RANGE(2e-13, error, 2e-12) ? "" : " NOT ");
if (!IS_IN_RANGE(2e-13, error, 2e-12))
problems++;
rwfh2 = prepare_row_clusteroperator(h2copy->rb, h2copy->cb, tm);
cwfh2 = prepare_col_clusteroperator(h2copy->rb, h2copy->cb, tm);
(void) printf("Checking factorization\n");
error = norm2_h2matrix(h2copy);
addmul_h2matrix(-1.0, L, false, R, h2copy, rwfh2, cwfh2, tm, tol);
error = norm2_h2matrix(h2copy) / error;
(void) printf(" Accuracy %g, %sokay\n", error,
IS_IN_RANGE(4.0e-15, error, 5.0e-14) ? "" : " NOT ");
if (!IS_IN_RANGE(4.0e-15, error, 5.0e-14))
problems++;
/* Final clean-up */
(void) printf("Cleaning up\n");
del_h2matrix(h2);
del_h2matrix(h2copy);
del_h2matrix(L);
del_h2matrix(R);
del_clusteroperator(rwf);
del_clusteroperator(cwf);
del_clusteroperator(rwflow);
del_clusteroperator(cwflow);
del_clusteroperator(rwfup);
del_clusteroperator(cwfup);
del_clusteroperator(rwfh2);
del_clusteroperator(cwfh2);
del_avector(b);
del_avector(x);
del_truncmode(tm);
freemem(root2->idx);
del_bem2d(bem2);
del_block(block2);
del_cluster(root2);
del_curve2d(gr2);
(void) printf("----------------------------------------\n"
" %u matrices and\n"
" %u vectors still active\n"
" %u errors found\n", getactives_amatrix(),
getactives_avector(), problems);
return problems;
}