Mercurial > octave
view liboctave/numeric/lo-mappers.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 | 014030798d5e |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 1996-2022 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 "lo-mappers.h" #include "lo-specfun.h" #include "math-wrappers.h" // FIXME: We used to have this situation: // // Functions that forward to gnulib belong here so we can keep // gnulib:: out of lo-mappers.h. // // but now we just use std:: and explicit wrappers in C++ code so maybe // some of the forwarding functions can be defined inline here. namespace octave { namespace math { bool isna (double x) { return lo_ieee_is_NA (x); } bool isna (const Complex& x) { return (isna (std::real (x)) || isna (std::imag (x))); } bool isna (float x) { return lo_ieee_is_NA (x); } bool isna (const FloatComplex& x) { return (isna (std::real (x)) || isna (std::imag (x))); } bool is_NaN_or_NA (const Complex& x) { return (isnan (std::real (x)) || isnan (std::imag (x))); } bool is_NaN_or_NA (const FloatComplex& x) { return (isnan (std::real (x)) || isnan (std::imag (x))); } // Matlab returns a different phase for acos, asin then std library // which requires a small function to remap the phase. Complex acos (const Complex& x) { Complex y = std::acos (x); if (std::imag (x) == 0.0 && std::real (x) > 1.0) return std::conj (y); else return y; } FloatComplex acos (const FloatComplex& x) { FloatComplex y = std::acos (x); if (std::imag (x) == 0.0f && std::real (x) > 1.0f) return std::conj (y); else return y; } Complex asin (const Complex& x) { Complex y = std::asin (x); if (std::imag (x) == 0.0 && std::real (x) > 1.0) return std::conj (y); else return y; } FloatComplex asin (const FloatComplex& x) { FloatComplex y = std::asin (x); if (std::imag (x) == 0.0f && std::real (x) > 1.0f) return std::conj (y); else return y; } double frexp (double x, int *expptr) { return octave_frexp_wrapper (x, expptr); } float frexp (float x, int *expptr) { return octave_frexpf_wrapper (x, expptr); } Complex log2 (const Complex& x) { return std::log (x) / M_LN2; } FloatComplex log2 (const FloatComplex& x) { return std::log (x) / static_cast<float> (M_LN2); } double log2 (double x, int& exp) { return frexp (x, &exp); } float log2 (float x, int& exp) { return frexp (x, &exp); } Complex log2 (const Complex& x, int& exp) { double ax = std::abs (x); double lax = log2 (ax, exp); return (ax != lax) ? (x / ax) * lax : x; } FloatComplex log2 (const FloatComplex& x, int& exp) { float ax = std::abs (x); float lax = log2 (ax, exp); return (ax != lax) ? (x / ax) * lax : x; } bool negative_sign (double x) { return __lo_ieee_signbit (x); } bool negative_sign (float x) { return __lo_ieee_float_signbit (x); } // Sometimes you need a large integer, but not always. octave_idx_type nint_big (double x) { if (x > std::numeric_limits<octave_idx_type>::max ()) return std::numeric_limits<octave_idx_type>::max (); else if (x < std::numeric_limits<octave_idx_type>::min ()) return std::numeric_limits<octave_idx_type>::min (); else return static_cast<octave_idx_type> ((x > 0.0) ? (x + 0.5) : (x - 0.5)); } octave_idx_type nint_big (float x) { if (x > std::numeric_limits<octave_idx_type>::max ()) return std::numeric_limits<octave_idx_type>::max (); else if (x < std::numeric_limits<octave_idx_type>::min ()) return std::numeric_limits<octave_idx_type>::min (); else return static_cast<octave_idx_type> ((x > 0.0f) ? (x + 0.5f) : (x - 0.5f)); } int nint (double x) { if (x > std::numeric_limits<int>::max ()) return std::numeric_limits<int>::max (); else if (x < std::numeric_limits<int>::min ()) return std::numeric_limits<int>::min (); else return static_cast<int> ((x > 0.0) ? (x + 0.5) : (x - 0.5)); } int nint (float x) { if (x > std::numeric_limits<int>::max ()) return std::numeric_limits<int>::max (); else if (x < std::numeric_limits<int>::min ()) return std::numeric_limits<int>::min (); else return static_cast<int> ((x > 0.0f) ? (x + 0.5f) : (x - 0.5f)); } Complex rc_acos (double x) { return fabs (x) > 1.0 ? acos (Complex (x)) : Complex (std::acos (x)); } FloatComplex rc_acos (float x) { return fabsf (x) > 1.0f ? acos (FloatComplex (x)) : FloatComplex (std::acos (x)); } Complex rc_acosh (double x) { return x < 1.0 ? acosh (Complex (x)) : Complex (acosh (x)); } FloatComplex rc_acosh (float x) { return x < 1.0f ? acosh (FloatComplex (x)) : FloatComplex (acosh (x)); } Complex rc_asin (double x) { return fabs (x) > 1.0 ? asin (Complex (x)) : Complex (std::asin (x)); } FloatComplex rc_asin (float x) { return fabsf (x) > 1.0f ? asin (FloatComplex (x)) : FloatComplex (::asinf (x)); } Complex rc_atanh (double x) { return fabs (x) > 1.0 ? atanh (Complex (x)) : Complex (atanh (x)); } FloatComplex rc_atanh (float x) { return fabsf (x) > 1.0f ? atanh (FloatComplex (x)) : FloatComplex (atanh (x)); } Complex rc_log (double x) { return x < 0.0 ? Complex (std::log (-x), M_PI) : Complex (std::log (x)); } FloatComplex rc_log (float x) { return x < 0.0f ? FloatComplex (std::log (-x), static_cast<float> (M_PI)) : FloatComplex (std::log (x)); } Complex rc_log2 (double x) { constexpr double PI_LN2 = 4.53236014182719380962; // = pi / log(2) return x < 0.0 ? Complex (log2 (-x), PI_LN2) : Complex (log2 (x)); } FloatComplex rc_log2 (float x) { constexpr float PI_LN2 = 4.53236014182719380962f; // = pi / log(2) return x < 0.0f ? FloatComplex (log2 (-x), PI_LN2) : FloatComplex (log2 (x)); } Complex rc_log10 (double x) { constexpr double PI_LN10 = 1.36437635384184134748; // = pi / log(10) return x < 0.0 ? Complex (log10 (-x), PI_LN10) : Complex (log10 (x)); } FloatComplex rc_log10 (float x) { constexpr float PI_LN10 = 1.36437635384184134748f; // = pi / log(10) return x < 0.0f ? FloatComplex (log10 (-x), PI_LN10) : FloatComplex (log10f (x)); } Complex rc_sqrt (double x) { return x < 0.0 ? Complex (0.0, std::sqrt (-x)) : Complex (std::sqrt (x)); } FloatComplex rc_sqrt (float x) { return x < 0.0f ? FloatComplex (0.0f, std::sqrt (-x)) : FloatComplex (std::sqrt (x)); } } }