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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2008-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING. If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if defined (HAVE_CONFIG_H)
# include "config.h"
#endif
#include "byte-swap.h"
#include "ov-cx-diag.h"
#include "ov-flt-cx-diag.h"
#include "ov-re-diag.h"
#include "ov-base-diag.cc"
#include "ov-complex.h"
#include "ov-cx-mat.h"
#include "ls-utils.h"
template class octave_base_diag<ComplexDiagMatrix, ComplexMatrix>;
DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_complex_diag_matrix,
"complex diagonal matrix", "double");
static octave_base_value *
default_numeric_conversion_function (const octave_base_value& a)
{
const octave_complex_diag_matrix& v
= dynamic_cast<const octave_complex_diag_matrix&> (a);
return new octave_complex_matrix (v.complex_matrix_value ());
}
octave_base_value::type_conv_info
octave_complex_diag_matrix::numeric_conversion_function (void) const
{
return octave_base_value::type_conv_info
(default_numeric_conversion_function,
octave_complex_matrix::static_type_id ());
}
static octave_base_value *
default_numeric_demotion_function (const octave_base_value& a)
{
const octave_complex_diag_matrix& v
= dynamic_cast<const octave_complex_diag_matrix&> (a);
return new octave_float_complex_diag_matrix
(v.float_complex_diag_matrix_value ());
}
octave_base_value::type_conv_info
octave_complex_diag_matrix::numeric_demotion_function (void) const
{
return
octave_base_value::type_conv_info (default_numeric_demotion_function,
octave_float_complex_diag_matrix::static_type_id ());
}
octave_base_value *
octave_complex_diag_matrix::try_narrowing_conversion (void)
{
octave_base_value *retval = nullptr;
if (matrix.nelem () == 1)
{
retval = new octave_complex (matrix (0, 0));
octave_base_value *rv2 = retval->try_narrowing_conversion ();
if (rv2)
{
delete retval;
retval = rv2;
}
}
else if (matrix.all_elements_are_real ())
{
return new octave_diag_matrix (::real (matrix));
}
return retval;
}
DiagMatrix
octave_complex_diag_matrix::diag_matrix_value (bool force_conversion) const
{
DiagMatrix retval;
if (! force_conversion)
warn_implicit_conversion ("Octave:imag-to-real",
type_name (), "real matrix");
retval = ::real (matrix);
return retval;
}
FloatDiagMatrix
octave_complex_diag_matrix::float_diag_matrix_value (bool force_conversion) const
{
DiagMatrix retval;
if (! force_conversion)
warn_implicit_conversion ("Octave:imag-to-real",
type_name (), "real matrix");
retval = ::real (matrix);
return retval;
}
ComplexDiagMatrix
octave_complex_diag_matrix::complex_diag_matrix_value (bool) const
{
return matrix;
}
FloatComplexDiagMatrix
octave_complex_diag_matrix::float_complex_diag_matrix_value (bool) const
{
return FloatComplexDiagMatrix (matrix);
}
octave_value
octave_complex_diag_matrix::as_double (void) const
{
return matrix;
}
octave_value
octave_complex_diag_matrix::as_single (void) const
{
return FloatComplexDiagMatrix (matrix);
}
octave_value
octave_complex_diag_matrix::map (unary_mapper_t umap) const
{
switch (umap)
{
case umap_abs:
return matrix.abs ();
case umap_real:
return ::real (matrix);
case umap_conj:
return ::conj (matrix);
case umap_imag:
return ::imag (matrix);
case umap_sqrt:
{
ComplexColumnVector tmp
= matrix.extract_diag ().map<Complex> (std::sqrt);
ComplexDiagMatrix retval (tmp);
retval.resize (matrix.rows (), matrix.columns ());
return retval;
}
default:
return to_dense ().map (umap);
}
}
bool
octave_complex_diag_matrix::save_binary (std::ostream& os, bool save_as_floats)
{
int32_t r = matrix.rows ();
int32_t c = matrix.cols ();
os.write (reinterpret_cast<char *> (&r), 4);
os.write (reinterpret_cast<char *> (&c), 4);
ComplexMatrix m = ComplexMatrix (matrix.extract_diag ());
save_type st = LS_DOUBLE;
if (save_as_floats)
{
if (m.too_large_for_float ())
{
warning ("save: some values too large to save as floats --");
warning ("save: saving as doubles instead");
}
else
st = LS_FLOAT;
}
else if (matrix.length () > 4096) // FIXME: make this configurable.
{
double max_val, min_val;
if (m.all_integers (max_val, min_val))
st = get_save_type (max_val, min_val);
}
const Complex *mtmp = m.data ();
write_doubles (os, reinterpret_cast<const double *> (mtmp), st,
2 * m.numel ());
return true;
}
bool
octave_complex_diag_matrix::load_binary (std::istream& is, bool swap,
octave::mach_info::float_format fmt)
{
int32_t r, c;
char tmp;
if (! (is.read (reinterpret_cast<char *> (&r), 4)
&& is.read (reinterpret_cast<char *> (&c), 4)
&& is.read (reinterpret_cast<char *> (&tmp), 1)))
return false;
if (swap)
{
swap_bytes<4> (&r);
swap_bytes<4> (&c);
}
ComplexDiagMatrix m (r, c);
Complex *im = m.fortran_vec ();
octave_idx_type len = m.length ();
read_doubles (is, reinterpret_cast<double *> (im),
static_cast<save_type> (tmp), 2 * len, swap, fmt);
if (! is)
return false;
matrix = m;
return true;
}
bool
octave_complex_diag_matrix::chk_valid_scalar (const octave_value& val,
Complex& x) const
{
bool retval = val.is_complex_scalar () || val.is_real_scalar ();
if (retval)
x = val.complex_value ();
return retval;
}
/*
%!assert <*36368> (diag ([1+i, 1-i])^2 , diag ([2i, -2i]), 4*eps)
*/
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