Mercurial > octave
view libinterp/octave-value/ov-scalar.cc @ 29358:0a5b15007766 stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 10 Feb 2021 09:52:15 -0500 |
parents | bd51beb6205e |
children | 7854d5752dd2 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2021 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 <istream> #include <ostream> #include "oct-inttypes.h" #include "data-conv.h" #include "mach-info.h" #include "lo-specfun.h" #include "lo-mappers.h" #include "defun.h" #include "errwarn.h" #include "mxarray.h" #include "ovl.h" #include "oct-hdf5.h" #include "oct-stream.h" #include "ov-scalar.h" #include "ov-float.h" #include "ov-base.h" #include "ov-base-scalar.h" #include "ov-base-scalar.cc" #include "ov-re-mat.h" #include "ov-typeinfo.h" #include "pr-output.h" #include "xdiv.h" #include "xpow.h" #include "ops.h" #include "ls-oct-text.h" #include "ls-hdf5.h" // Prevent implicit instantiations on some systems (Windows, others?) // that can lead to duplicate definitions of static data members. extern template class OCTINTERP_API octave_base_scalar<float>; template class octave_base_scalar<double>; DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_scalar, "scalar", "double"); static octave_base_value * default_numeric_demotion_function (const octave_base_value& a) { const octave_scalar& v = dynamic_cast<const octave_scalar&> (a); return new octave_float_scalar (v.float_value ()); } octave_base_value::type_conv_info octave_scalar::numeric_demotion_function (void) const { return octave_base_value::type_conv_info (default_numeric_demotion_function, octave_float_scalar::static_type_id ()); } octave_value octave_scalar::do_index_op (const octave_value_list& idx, bool resize_ok) { // FIXME: this doesn't solve the problem of // // a = 1; a([1,1], [1,1], [1,1]) // // and similar constructions. Hmm... // FIXME: using this constructor avoids narrowing the // 1x1 matrix back to a scalar value. Need a better solution // to this problem. octave_value tmp (new octave_matrix (matrix_value ())); return tmp.do_index_op (idx, resize_ok); } octave_value octave_scalar::resize (const dim_vector& dv, bool fill) const { if (fill) { NDArray retval (dv, 0); if (dv.numel ()) retval(0) = scalar; return retval; } else { NDArray retval (dv); if (dv.numel ()) retval(0) = scalar; return retval; } } octave_value octave_scalar::as_double (void) const { return scalar; } octave_value octave_scalar::as_single (void) const { return static_cast<float> (scalar); } octave_value octave_scalar::as_int8 (void) const { return octave_int8 (scalar); } octave_value octave_scalar::as_int16 (void) const { return octave_int16 (scalar); } octave_value octave_scalar::as_int32 (void) const { return octave_int32 (scalar); } octave_value octave_scalar::as_int64 (void) const { return octave_int64 (scalar); } octave_value octave_scalar::as_uint8 (void) const { return octave_uint8 (scalar); } octave_value octave_scalar::as_uint16 (void) const { return octave_uint16 (scalar); } octave_value octave_scalar::as_uint32 (void) const { return octave_uint32 (scalar); } octave_value octave_scalar::as_uint64 (void) const { return octave_uint64 (scalar); } octave_value octave_scalar::diag (octave_idx_type m, octave_idx_type n) const { return DiagMatrix (Array<double> (dim_vector (1, 1), scalar), m, n); } octave_value octave_scalar::convert_to_str_internal (bool, bool, char type) const { octave_value retval; if (octave::math::isnan (scalar)) octave::err_nan_to_character_conversion (); int ival = octave::math::nint (scalar); if (ival < 0 || ival > std::numeric_limits<unsigned char>::max ()) { // FIXME: is there something better we could do? ival = 0; ::warning ("range error for conversion to character value"); } retval = octave_value (std::string (1, static_cast<char> (ival)), type); return retval; } bool octave_scalar::save_ascii (std::ostream& os) { double d = double_value (); octave_write_double (os, d); os << "\n"; return true; } bool octave_scalar::load_ascii (std::istream& is) { scalar = octave_read_value<double> (is); if (! is) error ("load: failed to load scalar constant"); return true; } bool octave_scalar::save_binary (std::ostream& os, bool /* save_as_floats */) { char tmp = LS_DOUBLE; os.write (reinterpret_cast<char *> (&tmp), 1); double dtmp = double_value (); os.write (reinterpret_cast<char *> (&dtmp), 8); return true; } bool octave_scalar::load_binary (std::istream& is, bool swap, octave::mach_info::float_format fmt) { char tmp; if (! is.read (reinterpret_cast<char *> (&tmp), 1)) return false; double dtmp; read_doubles (is, &dtmp, static_cast<save_type> (tmp), 1, swap, fmt); if (! is) return false; scalar = dtmp; return true; } bool octave_scalar::save_hdf5 (octave_hdf5_id loc_id, const char *name, bool /* save_as_floats */) { bool retval = false; #if defined (HAVE_HDF5) hsize_t dimens[3]; hid_t space_hid, data_hid; space_hid = data_hid = -1; space_hid = H5Screate_simple (0, dimens, nullptr); if (space_hid < 0) return false; #if defined (HAVE_HDF5_18) data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_DOUBLE, space_hid, octave_H5P_DEFAULT, octave_H5P_DEFAULT, octave_H5P_DEFAULT); #else data_hid = H5Dcreate (loc_id, name, H5T_NATIVE_DOUBLE, space_hid, octave_H5P_DEFAULT); #endif if (data_hid < 0) { H5Sclose (space_hid); return false; } double tmp = double_value (); retval = H5Dwrite (data_hid, H5T_NATIVE_DOUBLE, octave_H5S_ALL, octave_H5S_ALL, octave_H5P_DEFAULT, &tmp) >= 0; H5Dclose (data_hid); H5Sclose (space_hid); #else octave_unused_parameter (loc_id); octave_unused_parameter (name); warn_save ("hdf5"); #endif return retval; } bool octave_scalar::load_hdf5 (octave_hdf5_id loc_id, const char *name) { #if defined (HAVE_HDF5) #if defined (HAVE_HDF5_18) hid_t data_hid = H5Dopen (loc_id, name, octave_H5P_DEFAULT); #else hid_t data_hid = H5Dopen (loc_id, name); #endif hid_t space_id = H5Dget_space (data_hid); hsize_t rank = H5Sget_simple_extent_ndims (space_id); if (rank != 0) { H5Dclose (data_hid); return false; } double dtmp; if (H5Dread (data_hid, H5T_NATIVE_DOUBLE, octave_H5S_ALL, octave_H5S_ALL, octave_H5P_DEFAULT, &dtmp) < 0) { H5Dclose (data_hid); return false; } scalar = dtmp; H5Dclose (data_hid); return true; #else octave_unused_parameter (loc_id); octave_unused_parameter (name); warn_load ("hdf5"); return false; #endif } mxArray * octave_scalar::as_mxArray (void) const { mxArray *retval = new mxArray (mxDOUBLE_CLASS, 1, 1, mxREAL); double *pr = static_cast<double *> (retval->get_data ()); pr[0] = scalar; return retval; } octave_value octave_scalar::map (unary_mapper_t umap) const { switch (umap) { case umap_imag: return 0.0; case umap_real: case umap_conj: return scalar; #define SCALAR_MAPPER(UMAP, FCN) \ case umap_ ## UMAP: \ return octave_value (FCN (scalar)) SCALAR_MAPPER (abs, ::fabs); SCALAR_MAPPER (acos, octave::math::rc_acos); SCALAR_MAPPER (acosh, octave::math::rc_acosh); SCALAR_MAPPER (angle, std::arg); SCALAR_MAPPER (arg, std::arg); SCALAR_MAPPER (asin, octave::math::rc_asin); SCALAR_MAPPER (asinh, octave::math::asinh); SCALAR_MAPPER (atan, ::atan); SCALAR_MAPPER (atanh, octave::math::rc_atanh); SCALAR_MAPPER (erf, octave::math::erf); SCALAR_MAPPER (erfinv, octave::math::erfinv); SCALAR_MAPPER (erfcinv, octave::math::erfcinv); SCALAR_MAPPER (erfc, octave::math::erfc); SCALAR_MAPPER (erfcx, octave::math::erfcx); SCALAR_MAPPER (erfi, octave::math::erfi); SCALAR_MAPPER (dawson, octave::math::dawson); SCALAR_MAPPER (gamma, octave::math::gamma); SCALAR_MAPPER (lgamma, octave::math::rc_lgamma); SCALAR_MAPPER (cbrt, octave::math::cbrt); SCALAR_MAPPER (ceil, ::ceil); SCALAR_MAPPER (cos, ::cos); SCALAR_MAPPER (cosh, ::cosh); SCALAR_MAPPER (exp, ::exp); SCALAR_MAPPER (expm1, octave::math::expm1); SCALAR_MAPPER (fix, octave::math::fix); SCALAR_MAPPER (floor, std::floor); SCALAR_MAPPER (log, octave::math::rc_log); SCALAR_MAPPER (log2, octave::math::rc_log2); SCALAR_MAPPER (log10, octave::math::rc_log10); SCALAR_MAPPER (log1p, octave::math::rc_log1p); SCALAR_MAPPER (round, octave::math::round); SCALAR_MAPPER (roundb, octave::math::roundb); SCALAR_MAPPER (signum, octave::math::signum); SCALAR_MAPPER (sin, ::sin); SCALAR_MAPPER (sinh, ::sinh); SCALAR_MAPPER (sqrt, octave::math::rc_sqrt); SCALAR_MAPPER (tan, ::tan); SCALAR_MAPPER (tanh, ::tanh); SCALAR_MAPPER (isfinite, octave::math::isfinite); SCALAR_MAPPER (isinf, octave::math::isinf); SCALAR_MAPPER (isna, octave::math::isna); SCALAR_MAPPER (isnan, octave::math::isnan); SCALAR_MAPPER (xsignbit, octave::math::signbit); // Special cases for Matlab compatibility. case umap_xtolower: case umap_xtoupper: return scalar; case umap_xisalnum: case umap_xisalpha: case umap_xisascii: case umap_xiscntrl: case umap_xisdigit: case umap_xisgraph: case umap_xislower: case umap_xisprint: case umap_xispunct: case umap_xisspace: case umap_xisupper: case umap_xisxdigit: { octave_value str_conv = convert_to_str (true, true); return str_conv.map (umap); } default: return octave_base_value::map (umap); } } bool octave_scalar::fast_elem_insert_self (void *where, builtin_type_t btyp) const { // Support inline real->complex conversion. if (btyp == btyp_double) { *(reinterpret_cast<double *>(where)) = scalar; return true; } else if (btyp == btyp_complex) { *(reinterpret_cast<Complex *>(where)) = scalar; return true; } else return false; }