// Real part is only defined for real derivative components
static FadType real(const FadType& x) {
#ifdef TEUCHOS_DEBUG
TEST_FOR_EXCEPTION(is_fad_real(x) == false, std::runtime_error,
"Real component is not a differentiable "
"function of complex inputs.");
#endif
FadType y = x;
y.val() = Teuchos::ScalarTraits<ValueT>::real(x.val());
return y;
}
static bool isnaninf(const FadType& x) {
if (Teuchos::ScalarTraits<ValueT>::isnaninf(x.val()))
return true;
for (int i=0; i<x.size(); i++)
if (Teuchos::ScalarTraits<ValueT>::isnaninf(x.dx(i)))
return true;
return false;
}
// Imaginary part is only defined for real derivative components
static FadType imag(const FadType& x) {
#ifdef TEUCHOS_DEBUG
TEST_FOR_EXCEPTION(is_fad_real(x) == false, std::runtime_error,
"Imaginary component is not a differentiable "
"function of complex inputs.");
#endif
return FadType(Teuchos::ScalarTraits<ValueT>::imag(x.val()));
}
// Helper function to determine whether a Fad type is real
static bool is_fad_real(const FadType& x) {
if (x.size() == 0)
return true;
if (Teuchos::ScalarTraits<ValueT>::isComplex) {
if (!is_complex_real(x.val()))
return false;
for (int i=0; i<x.size(); i++)
if (!is_complex_real(x.fastAccessDx(i)))
return false;
}
return true;
}
static magnitudeType magnitude(const FadType& a) {
#ifdef TEUCHOS_DEBUG
TEUCHOS_SCALAR_TRAITS_NAN_INF_ERR(
a, "Error, the input value to magnitude(...) a = " << a <<
" can not be NaN!" );
TEST_FOR_EXCEPTION(is_fad_real(a) == false, std::runtime_error,
"Complex magnitude is not a differentiable "
"function of complex inputs.");
#endif
//return std::fabs(a);
magnitudeType b(a.size(),
Teuchos::ScalarTraits<ValueT>::magnitude(a.val()));
if (Teuchos::ScalarTraits<ValueT>::real(a.val()) >= 0)
for (int i=0; i<a.size(); i++)
b.fastAccessDx(i) =
Teuchos::ScalarTraits<ValueT>::magnitude(a.fastAccessDx(i));
else
for (int i=0; i<a.size(); i++)
b.fastAccessDx(i) =
-Teuchos::ScalarTraits<ValueT>::magnitude(a.fastAccessDx(i));
return b;
}
TEUCHOS_UNIT_TEST_TEMPLATE_3_DECL(
Kokkos_View_Fad, UnmanagedConst, FadType, Layout, Device )
{
typedef typename FadType::value_type scalar_type;
typedef typename ApplyView<scalar_type***,Layout,Device>::type ViewType;
typedef typename ApplyView<const scalar_type***,Layout,Device>::type ConstViewType;
typedef typename ApplyView<FadType**,Layout,Device,Kokkos::MemoryUnmanaged>::type FadViewType;
typedef typename ApplyView<const FadType**,Layout,Device,Kokkos::MemoryUnmanaged>::type ConstFadViewType;
typedef typename ViewType::size_type size_type;
typedef typename ViewType::HostMirror host_view_type;
typedef typename FadViewType::HostMirror fad_host_view_type;
const size_type num_rows = global_num_rows;
const size_type num_cols = global_num_cols;
const size_type fad_size = global_fad_size;
// Create and fill view
ViewType v("view", num_rows, num_cols, fad_size+1);
host_view_type h_v = Kokkos::create_mirror_view(v);
for (size_type i=0; i<num_rows; ++i) {
for (size_type j=0; j<num_cols; ++j) {
FadType f = generate_fad<FadType>(num_rows, num_cols, fad_size, i, j);
for (size_type k=0; k<fad_size; k++)
h_v(i,j,k) = f.dx(k);
h_v(i,j,fad_size) = f.val();
}
}
Kokkos::deep_copy(v, h_v);
ConstViewType v_const = v;
// Create unmanaged view
ConstFadViewType v_fad(
v_const.ptr_on_device(), num_rows, num_cols, fad_size+1);
// Copy back -- can't use create_mirror_view() because v_fad is unmanaged
fad_host_view_type h_v_fad("host_view_fad", num_rows, num_cols, fad_size+1);
Kokkos::deep_copy(h_v_fad, v_fad);
// Check
success = true;
for (size_type i=0; i<num_rows; ++i) {
for (size_type j=0; j<num_cols; ++j) {
FadType f = generate_fad<FadType>(num_rows, num_cols, fad_size, i, j);
success = success && checkFads(f, h_v_fad(i,j), out);
}
}
}
TEUCHOS_UNIT_TEST_TEMPLATE_3_DECL(
Kokkos_View_Fad, DeepCopy_ConstantFad, FadType, Layout, Device )
{
typedef typename ApplyView<FadType**,Layout,Device>::type ViewType;
typedef typename ViewType::size_type size_type;
typedef typename ViewType::HostMirror host_view_type;
const size_type num_rows = global_num_rows;
const size_type num_cols = global_num_cols;
const size_type fad_size = global_fad_size;
// Create and fill view
ViewType v("view", num_rows, num_cols, fad_size+1);
typename ViewType::array_type va = v;
Kokkos::deep_copy( va, 1.0 );
// Deep copy a constant scalar
FadType a = 2.3456;
Kokkos::deep_copy( v, a );
// Copy to host
host_view_type hv = Kokkos::create_mirror_view(v);
Kokkos::deep_copy(hv, v);
// Check
success = true;
for (size_type i=0; i<num_rows; ++i) {
for (size_type j=0; j<num_cols; ++j) {
#if defined(HAVE_SACADO_VIEW_SPEC) && !defined(SACADO_DISABLE_FAD_VIEW_SPEC)
FadType f = FadType(fad_size, a.val());
#else
FadType f = a;
#endif
success = success && checkFads(f, hv(i,j), out);
}
}
}