bool solve(const_Matrix<T, Block0> b, Matrix<T, Block1> x)
{
typedef typename Block_layout<Block0>::order_type order_type;
typedef typename Block_layout<Block0>::complex_type complex_type;
typedef Layout<2, order_type, Stride_unit_dense, complex_type> data_LP;
typedef Strided<2, T, data_LP, Local_map> block_type;
assert(b.size(0) == length_);
assert(b.size(0) == x.size(0) && b.size(1) == x.size(1));
Matrix<T, block_type> b_int(b.size(0), b.size(1));
assign_local(b_int, b);
if (tr == mat_conj ||
(tr == mat_trans && Is_complex<T>::value) ||
(tr == mat_herm && !Is_complex<T>::value))
VSIP_IMPL_THROW(unimplemented(
"LU solver (CVSIP backend) does not implement this transformation"));
{
Ext_data<block_type> b_ext(b_int.block());
cvsip::View<2,T,true>
cvsip_b_int(b_ext.data(),0,b_ext.stride(0),b_ext.size(0),
b_ext.stride(1),b_ext.size(1));
cvsip_b_int.block().admit(true);
traits::lu_solve(lu_, tr, cvsip_b_int.ptr());
cvsip_b_int.block().release(true);
}
assign_local(x, b_int);
return true;
}
Workblock create_workblock(int times)
{
Workblock block;
int status = alf_wb_create(task_, ALF_WB_MULTI, times, &block.workblock_);
if (status != 0)
VSIP_IMPL_THROW(std::runtime_error("Task::create_workblock(multi) -- alf_wb_create failed."));
return block;
}
Workblock create_workblock()
{
Workblock block;
int status = alf_wb_create(task_, ALF_WB_SINGLE, 1, &block.workblock_);
if (status != 0)
VSIP_IMPL_THROW(std::runtime_error("Task::create_workblock(single) -- alf_wb_create failed."));
return block;
}
extern "C" ALF_ERR_POLICY_T
error_handler(void */*context*/, ALF_ERR_TYPE_T type, int code, char *msg)
{
// For now, we raise unconditionally raise an exception.
// This may be refined, for example by chosing different exception
// types depending on 'type' above.
switch (type)
{
default:
VSIP_IMPL_THROW(runtime_error(code, msg));
}
// Unreachable
return ALF_ERR_POLICY_ABORT;
}
static qr_type *qr_create(length_type n, length_type m, storage_type s)
{
qr_type *qr = vsip_cqrd_create_f(n, m, storage(s));
if (!qr) VSIP_IMPL_THROW(std::bad_alloc());
return qr;
}
static lud_type *lu_create(length_type n)
{
lud_type *s = vsip_clud_create_f(n);
if (!s) VSIP_IMPL_THROW(std::bad_alloc());
return s;
}
static chol_type *chol_create(length_type n, mat_uplo ul)
{
chol_type *s = vsip_chold_create_f(ul == 0 ? VSIP_TR_LOW : VSIP_TR_UPP, n);
if (!s) VSIP_IMPL_THROW(std::bad_alloc());
return s;
}
static scalar_type const *get_imag_ptr(const_type /*ptr*/)
{
VSIP_IMPL_THROW(std::runtime_error("Accessing imaginary part of non-complex pointer"));
return 0;
}