Mercurial > octave-libtiff
view liboctave/array/fRowVector.cc @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | 0a5b15007766 |
children |
line wrap: on
line source
//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1994-2022 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 <type_traits> #include "Array-util.h" #include "lo-blas-proto.h" #include "lo-error.h" #include "mx-base.h" #include "mx-inlines.cc" #include "oct-cmplx.h" // Row Vector class. bool FloatRowVector::operator == (const FloatRowVector& a) const { octave_idx_type len = numel (); if (len != a.numel ()) return 0; return mx_inline_equal (len, data (), a.data ()); } bool FloatRowVector::operator != (const FloatRowVector& a) const { return !(*this == a); } FloatRowVector& FloatRowVector::insert (const FloatRowVector& a, octave_idx_type c) { octave_idx_type a_len = a.numel (); if (c < 0 || c + a_len > numel ()) (*current_liboctave_error_handler) ("range error for insert"); if (a_len > 0) { make_unique (); for (octave_idx_type i = 0; i < a_len; i++) xelem (c+i) = a.elem (i); } return *this; } FloatRowVector& FloatRowVector::fill (float val) { octave_idx_type len = numel (); if (len > 0) { make_unique (); for (octave_idx_type i = 0; i < len; i++) xelem (i) = val; } return *this; } FloatRowVector& FloatRowVector::fill (float val, octave_idx_type c1, octave_idx_type c2) { octave_idx_type len = numel (); if (c1 < 0 || c2 < 0 || c1 >= len || c2 >= len) (*current_liboctave_error_handler) ("range error for fill"); if (c1 > c2) { std::swap (c1, c2); } if (c2 >= c1) { make_unique (); for (octave_idx_type i = c1; i <= c2; i++) xelem (i) = val; } return *this; } FloatRowVector FloatRowVector::append (const FloatRowVector& a) const { octave_idx_type len = numel (); octave_idx_type nc_insert = len; FloatRowVector retval (len + a.numel ()); retval.insert (*this, 0); retval.insert (a, nc_insert); return retval; } FloatColumnVector FloatRowVector::transpose (void) const { return MArray<float>::transpose (); } FloatRowVector real (const FloatComplexRowVector& a) { return do_mx_unary_op<float, FloatComplex> (a, mx_inline_real); } FloatRowVector imag (const FloatComplexRowVector& a) { return do_mx_unary_op<float, FloatComplex> (a, mx_inline_imag); } FloatRowVector FloatRowVector::extract (octave_idx_type c1, octave_idx_type c2) const { if (c1 > c2) { std::swap (c1, c2); } octave_idx_type new_c = c2 - c1 + 1; FloatRowVector result (new_c); for (octave_idx_type i = 0; i < new_c; i++) result.xelem (i) = elem (c1+i); return result; } FloatRowVector FloatRowVector::extract_n (octave_idx_type r1, octave_idx_type n) const { FloatRowVector result (n); for (octave_idx_type i = 0; i < n; i++) result.xelem (i) = elem (r1+i); return result; } // row vector by matrix -> row vector FloatRowVector operator * (const FloatRowVector& v, const FloatMatrix& a) { FloatRowVector retval; F77_INT len = octave::to_f77_int (v.numel ()); F77_INT a_nr = octave::to_f77_int (a.rows ()); F77_INT a_nc = octave::to_f77_int (a.cols ()); if (a_nr != len) octave::err_nonconformant ("operator *", 1, len, a_nr, a_nc); if (len == 0) retval.resize (a_nc, 0.0); else { // Transpose A to form A'*x == (x'*A)' F77_INT ld = a_nr; retval.resize (a_nc); float *y = retval.fortran_vec (); F77_XFCN (sgemv, SGEMV, (F77_CONST_CHAR_ARG2 ("T", 1), a_nr, a_nc, 1.0, a.data (), ld, v.data (), 1, 0.0, y, 1 F77_CHAR_ARG_LEN (1))); } return retval; } // other operations float FloatRowVector::min (void) const { octave_idx_type len = numel (); if (len == 0) return 0; float res = elem (0); for (octave_idx_type i = 1; i < len; i++) if (elem (i) < res) res = elem (i); return res; } float FloatRowVector::max (void) const { octave_idx_type len = numel (); if (len == 0) return 0; float res = elem (0); for (octave_idx_type i = 1; i < len; i++) if (elem (i) > res) res = elem (i); return res; } std::ostream& operator << (std::ostream& os, const FloatRowVector& a) { // int field_width = os.precision () + 7; for (octave_idx_type i = 0; i < a.numel (); i++) os << ' ' /* setw (field_width) */ << a.elem (i); return os; } std::istream& operator >> (std::istream& is, FloatRowVector& a) { octave_idx_type len = a.numel (); if (len > 0) { float tmp; for (octave_idx_type i = 0; i < len; i++) { is >> tmp; if (is) a.elem (i) = tmp; else break; } } return is; } // other operations FloatRowVector linspace (float x1, float x2, octave_idx_type n_in) { FloatRowVector retval; if (n_in < 1) return retval; else if (n_in == 1) { retval.resize (1, x2); return retval; } // Use unsigned type (guaranteed n_in > 1 at this point) so that divisions // by 2 can be replaced by compiler with shift right instructions. typedef std::make_unsigned<octave_idx_type>::type unsigned_octave_idx_type; unsigned_octave_idx_type n = n_in; // Set endpoints, rather than calculate, for maximum accuracy. retval.clear (n); retval.xelem (0) = x1; retval.xelem (n-1) = x2; // Construct linspace symmetrically from both ends. float delta = (x2 - x1) / (n - 1); unsigned_octave_idx_type n2 = n/2; for (unsigned_octave_idx_type i = 1; i < n2; i++) { retval.xelem (i) = x1 + i*delta; retval.xelem (n-1-i) = x2 - i*delta; } if (n % 2 == 1) // Middle element if number of elements is odd. retval.xelem (n2) = (x1 == -x2 ? 0 : (x1 + x2) / 2); return retval; } // row vector by column vector -> scalar float operator * (const FloatRowVector& v, const FloatColumnVector& a) { float retval = 0.0; F77_INT len = octave::to_f77_int (v.numel ()); F77_INT a_len = octave::to_f77_int (a.numel ()); if (len != a_len) octave::err_nonconformant ("operator *", len, a_len); if (len != 0) F77_FUNC (xsdot, XSDOT) (len, v.data (), 1, a.data (), 1, retval); return retval; } FloatComplex operator * (const FloatRowVector& v, const FloatComplexColumnVector& a) { FloatComplexRowVector tmp (v); return tmp * a; }