/* -*- mode:C++ ; compile-command: "g++ -I.. -g -c misc.cc" -*-
 *
 *  Copyright (C) 2000,2014 B. Parisse, Institut Fourier, 38402 St Martin d'Heres
 *
 *  This program 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.
 *
 *  This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _GIAC_MISC_H_
#define _GIAC_MISC_H_
#include "first.h"
#include "global.h"
#include "gen.h"
#include "unary.h"
#include "symbolic.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

#ifdef __MINGW_H
inline int setenv(const char *name, const char *value, int overwrite){ return 0;}
inline int unsetenv(const char *name){return 0;}
#endif

#ifndef NO_NAMESPACE_GIAC
namespace giac {
#endif // ndef NO_NAMESPACE_GIAC
  gen _evalfa(const gen & args,GIAC_CONTEXT);
  gen _scalar_product(const gen & args,GIAC_CONTEXT);
  gen _compare(const gen & args,GIAC_CONTEXT);
  gen _preval(const gen & args,GIAC_CONTEXT);
  bool interpolable_resultant(const polynome & P,int d1,gen &coefft,bool extend,GIAC_CONTEXT);
  bool interpolable(int d1,gen & coefft,bool extend,GIAC_CONTEXT);
  // if possible return j, if j is too large, return a GF element
  gen interpolate_xi(int j,const gen &coeff);
  vecteur divided_differences(const vecteur & x,const vecteur & y);
  gen _lagrange(const gen & args,GIAC_CONTEXT);
  gen _reorder(const gen & args,GIAC_CONTEXT);
  gen _adjoint_matrix(const gen & args,GIAC_CONTEXT);
  gen _equal2diff(const gen & args,GIAC_CONTEXT);
  gen _equal2list(const gen & args,GIAC_CONTEXT);
  gen _rank(const gen & args,GIAC_CONTEXT);
  gen _csc(const gen & args,GIAC_CONTEXT);
  gen _cot(const gen & args,GIAC_CONTEXT);
  gen _acsc(const gen & args,GIAC_CONTEXT);
  gen _ibpu(const gen & args,GIAC_CONTEXT) ;
  gen _changebase(const gen & args,GIAC_CONTEXT);
  gen _epsilon2zero(const gen & args,GIAC_CONTEXT);
  gen _suppress(const gen & args,GIAC_CONTEXT);
  gen _valuation(const gen & args,GIAC_CONTEXT);
  gen _degree(const gen & args,GIAC_CONTEXT);
  gen _total_degree(const gen & args,GIAC_CONTEXT);
  gen _lcoeff(const gen & args,GIAC_CONTEXT);
  extern const unary_function_ptr * const  at_lcoeff ;
  extern const unary_function_ptr * const  at_set_language ;
  extern const unary_function_ptr * const  at_float ;
  gen _build_complex(const gen & args,GIAC_CONTEXT);
  extern const unary_function_ptr * const  at_complex ;

  gen _tcoeff(const gen & args,GIAC_CONTEXT);
  gen _sqrfree(const gen & args,GIAC_CONTEXT);
  gen _truncate(const gen & args,GIAC_CONTEXT);
  gen _canonical_form(const gen & args,GIAC_CONTEXT);
  gen _fcoeff(const gen & args,GIAC_CONTEXT);
  gen _froot(const gen & args,GIAC_CONTEXT);
  gen _roots(const gen & g,GIAC_CONTEXT);
  gen _divpc(const gen & args,GIAC_CONTEXT);
  gen _ptayl(const gen & args,GIAC_CONTEXT);
  gen _dfc(const gen & g_orig,GIAC_CONTEXT);
  gen _dfc2f(const gen & g,GIAC_CONTEXT);
  gen _float2rational(const gen & g,GIAC_CONTEXT);
  gen _gramschmidt(const gen & g,GIAC_CONTEXT);
  gen _fmod(const gen & g,GIAC_CONTEXT);
  gen _pmin(const gen & g,GIAC_CONTEXT);
  gen _potential(const gen & g,GIAC_CONTEXT);
  gen _vpotential(const gen & g,GIAC_CONTEXT);
  gen _poly2symb(const gen & g,GIAC_CONTEXT);
  gen _symb2poly(const gen & g,GIAC_CONTEXT);
  gen _exp2trig(const gen & g,GIAC_CONTEXT);
  gen _nrows(const gen & g,GIAC_CONTEXT);
  gen _ncols(const gen & g,GIAC_CONTEXT);
  gen _l2norm(const gen & g0,GIAC_CONTEXT);
  gen _normalize(const gen & a,GIAC_CONTEXT);
  gen _lgcd(const gen & g,GIAC_CONTEXT);
  gen _float(const gen & g,GIAC_CONTEXT);
  gen _hold(const gen & g,GIAC_CONTEXT);
  gen _eigenvals(const gen & g,GIAC_CONTEXT);
  gen _Gcd(const gen & g,GIAC_CONTEXT);
  gen _Gcdex(const gen & g,GIAC_CONTEXT);
  gen _Factor(const gen & g,GIAC_CONTEXT);
  gen _Rref(const gen & g,GIAC_CONTEXT);
  gen _Rank(const gen & g,GIAC_CONTEXT);
  gen _Det(const gen & g,GIAC_CONTEXT);
  gen _Quo(const gen & g,GIAC_CONTEXT);
  gen _Rem(const gen & g,GIAC_CONTEXT);
  gen _Int(const gen & g,GIAC_CONTEXT);
  gen _divisors(const gen & g,GIAC_CONTEXT);
  gen _maxnorm(const gen & g0,GIAC_CONTEXT);
  gen _l1norm(const gen & g0,GIAC_CONTEXT);
  gen _dotprod(const gen & g,GIAC_CONTEXT);
  gen _diag(const gen & g,GIAC_CONTEXT);
  gen _input(const gen & args,GIAC_CONTEXT);
  gen _textinput(const gen & args,GIAC_CONTEXT);
  gen _primpart(const gen & g,GIAC_CONTEXT);
  gen _content(const gen & g,GIAC_CONTEXT);
  gen _icontent(const gen & g,GIAC_CONTEXT);
  gen _coeff(const gen & g,GIAC_CONTEXT);
  gen _chrem(const gen & g,GIAC_CONTEXT);
  gen _genpoly(const gen & g,GIAC_CONTEXT);
  gen _median(const gen & g,GIAC_CONTEXT);
  gen _quartile1(const gen & g,GIAC_CONTEXT);
  gen _quartile3(const gen & g,GIAC_CONTEXT);
  gen _quantile(const gen & g,GIAC_CONTEXT);
  gen _quartiles(const gen & g,GIAC_CONTEXT);
  gen _moustache(const gen & g_orig,GIAC_CONTEXT);
  gen _mean(const gen & g,GIAC_CONTEXT);
  gen _stdDev(const gen & g,GIAC_CONTEXT);
  gen _stddev(const gen & g,GIAC_CONTEXT);
  gen _variance(const gen & g,GIAC_CONTEXT);
  gen _covariance_correlation(const gen & g,GIAC_CONTEXT);
  gen _covariance(const gen & g,GIAC_CONTEXT);
  gen _correlation(const gen & g,GIAC_CONTEXT);
  gen _interval2center(const gen & g,GIAC_CONTEXT);
  gen function_regression(const gen & g,const gen & u1,const gen & u2,gen & a,gen &b,double & xmin,double & xmax,gen & correl2,GIAC_CONTEXT);
  gen _linear_regression(const gen & g,GIAC_CONTEXT);
  gen _exponential_regression(const gen & g,GIAC_CONTEXT);
  gen _power_regression(const gen & g,GIAC_CONTEXT);
  gen regression_plot_attributs(const gen & g,vecteur & attributs,bool & eq,bool & r,GIAC_CONTEXT);
  gen _linear_regression_plot(const gen & g,GIAC_CONTEXT);
  gen _exponential_regression_plot(const gen & g,GIAC_CONTEXT);
  gen _logarithmic_regression_plot(const gen & g,GIAC_CONTEXT);
  gen _power_regression_plot(const gen & g,GIAC_CONTEXT);
  gen _polynomial_regression(const gen & g,GIAC_CONTEXT);
  gen _polynomial_regression_plot(const gen & g,GIAC_CONTEXT);
  gen _logistic_regression(const gen & g,GIAC_CONTEXT);
  gen _logistic_regression_plot(const gen & g,GIAC_CONTEXT);
  gen _linear_interpolate(const gen & g,GIAC_CONTEXT);
  gen _parabolic_interpolate(const gen & g,GIAC_CONTEXT);
  gen _center2interval(const gen & g,GIAC_CONTEXT);
  gen _histogram(const gen & g,GIAC_CONTEXT);
  gen _cumulated_frequencies(const gen & g,GIAC_CONTEXT);
  gen _classes(const gen & g,GIAC_CONTEXT);
  extern const unary_function_ptr * const  at_classes ;
  gen _listplot(const gen & g,GIAC_CONTEXT);
  gen _scatterplot(const gen & g,GIAC_CONTEXT);
  gen _polygonplot(const gen & g,GIAC_CONTEXT);
  gen _polygonscatterplot(const gen & g,GIAC_CONTEXT);
  gen _diagramme_batons(const gen & g,GIAC_CONTEXT);
  gen _camembert(const gen & g,GIAC_CONTEXT);
  gen _axis(const gen & g,GIAC_CONTEXT);
  extern const unary_function_ptr * const  at_axis;
  gen cross_prod(const gen & a,const gen & b,const gen & c,GIAC_CONTEXT);
  gen _convexhull(const gen & g,GIAC_CONTEXT);
  matrice simplex_reduce(const matrice & m_orig,vecteur & bfs,gen & optimum,bool max_pb,bool choose_first,GIAC_CONTEXT);
  gen _simplex_reduce(const gen & g,GIAC_CONTEXT);
  gen _spline(const gen & g,GIAC_CONTEXT);
  gen giac_bitand(const gen & a,const gen & b);
  gen giac_bitor(const gen & a,const gen & b);
  gen giac_bitxor(const gen & a,const gen & b);
  gen giac_hamdist(const gen & a,const gen & b);
  gen _bitand(const gen & g,GIAC_CONTEXT);
  gen _bitor(const gen & g,GIAC_CONTEXT);
  gen _bitxor(const gen & g,GIAC_CONTEXT);
  gen _hamdist(const gen & g,GIAC_CONTEXT);
  gen _plotarea(const gen & g,GIAC_CONTEXT);
  gen _add_language(const gen & args,GIAC_CONTEXT);
  gen _remove_language(const gen & args,GIAC_CONTEXT);
  gen _show_language(const gen & args,GIAC_CONTEXT);
  gen _os_version(const gen & args,GIAC_CONTEXT);

  extern const unary_function_ptr * const  at_normalize;
  void aplatir(const matrice & m,vecteur & v,bool full=false);

  vecteur gen2continued_fraction(const gen & g,int n,GIAC_CONTEXT);
  gen float2rational(double d_orig,double eps,GIAC_CONTEXT);

  extern const unary_function_ptr * const  at_ggbalt;
  extern const unary_function_ptr * const  at_preval;
  extern const unary_function_ptr * const  at_dotprod;
  extern const unary_function_ptr * const  at_dot;
  extern const unary_function_ptr * const  at_scatterplot;
  extern const unary_function_ptr * const  at_mean;
  extern const unary_function_ptr * const  at_median;
  extern const unary_function_ptr * const  at_stddev;
  extern const unary_function_ptr * const  at_variance;
  extern const unary_function_ptr * const  at_lagrange;
  extern const unary_function_ptr * const  at_interp;
  extern const unary_function_ptr * const  at_reorder;
  extern const unary_function_ptr * const  at_adjoint_matrix;
  extern const unary_function_ptr * const  at_equal2diff;
  extern const unary_function_ptr * const  at_rank;
  extern const unary_function_ptr * const  at_diag;
  extern const unary_function_ptr * const  at_sec;
  extern const unary_function_ptr * const  at_csc;
  extern const unary_function_ptr * const  at_cot;
  extern const unary_function_ptr * const  at_asec;
  extern const unary_function_ptr * const  at_acsc;
  extern const unary_function_ptr * const  at_acot;
  extern const unary_function_ptr * const  at_frobenius_norm;
  extern const unary_function_ptr * const  at_linfnorm;
  extern const unary_function_ptr * const  at_matrixnorm;
  extern const unary_function_ptr * const  at_insert;

  gen _sec(const gen & args,GIAC_CONTEXT);
  gen _asec(const gen & args,GIAC_CONTEXT);
  gen _acsc(const gen & args,GIAC_CONTEXT);
  gen _csc(const gen & args,GIAC_CONTEXT);
  gen _acot(const gen & args,GIAC_CONTEXT);
  gen _cot(const gen & args,GIAC_CONTEXT);

  extern const unary_function_ptr * const  at_ibpu;
  extern const unary_function_ptr * const  at_changebase;
  extern const unary_function_ptr * const  at_epsilon2zero;
  extern const unary_function_ptr * const  at_suppress;
  extern const unary_function_ptr * const  at_clear;
  extern const unary_function_ptr * const  at_froot;
  extern const unary_function_ptr * const  at_fcoeff;
  extern const unary_function_ptr * const  at_truncate;
  extern const unary_function_ptr * const  at_divpc;
  extern const unary_function_ptr * const  at_ptayl;
  extern const unary_function_ptr * const  at_float2rational;
  extern const unary_function_ptr * const  at_gramschmidt;
  extern const unary_function_ptr * const  at_pmin;
  extern const unary_function_ptr * const  at_potential;
  extern const unary_function_ptr * const  at_vpotential;
  extern const unary_function_ptr * const  at_symb2poly1;
  extern const unary_function_ptr * const  at_poly12symb;
  extern const unary_function_ptr * const  at_exp2trig;
  extern const unary_function_ptr * const  at_nrows;
  extern const unary_function_ptr * const  at_ncols;
  extern const unary_function_ptr * const  at_l2norm;
  extern const unary_function_ptr * const  at_input;
#ifdef RTOS_THREADX
  // extern const unary_function_eval __input;
  extern const alias_unary_function_eval __input;
#else
  extern unary_function_eval __input;
#endif
  extern const unary_function_ptr * const  at_histogram;
  extern const unary_function_ptr * const  at_bitand;
  extern const unary_function_ptr * const  at_bitor;
  extern const unary_function_ptr * const  at_bitnot;
  extern const unary_function_ptr * const  at_bitxor;
  extern const unary_function_ptr * const  at_hamdist;
  matrice effectifs(const vecteur & v,double class_minimum,double class_size,GIAC_CONTEXT);
  // scalar product <a|b> (unlike dotproduct, takes the conjugate of coordinates of a)
  gen scalarproduct(const vecteur & a,const vecteur & b,GIAC_CONTEXT);
  // solution of A*x=b_orig with initial guess x0 up to precision eps
  // A must be hermitian or real symmetric
  // This function could be optimized if A, b_orig, x0 has double/complex<double> coefficients
  gen conjugate_gradient(const matrice & A,const vecteur & b_orig,const vecteur & x0,double eps,GIAC_CONTEXT);

  bool has_undef_stringerr(const gen & g,std::string & err);
  gen _is_polynomial(const gen & args,GIAC_CONTEXT);
  bool is_periodic(const gen & f,const gen & x,gen & periode,GIAC_CONTEXT);

  // step by step utilities
  // poi=point of interest, tvi=table of variation
  // asym=list of asymptotes, crit=critical points, inflex=inflection points
  // bit 0 of do_inflex_tabsign = set to 1 for inflexion (valid for tabvar)
  // bit 1 of do_inflex_tabsign = set to 1 for tabsign, 0 for tabvar
  int step_func(const gen & f,const gen & x,gen & xmin,gen&xmax,vecteur & poig,vecteur & tvi,gen & periode,vecteur & asym,vecteur & parab,vecteur & crit,vecteur & inflex,bool printtvi,bool exactlegende,GIAC_CONTEXT,int do_inflex_tabsign=1);
  extern const unary_function_ptr * const  at_tabvar;
  int step_param(const gen & f,const gen & g,const gen & t,gen & tmin,gen&tmax,vecteur & poi,vecteur & tvi,bool printtvi,bool exactlegende,GIAC_CONTEXT);
  // translate HTML Xcas for Firefox link to a giac list of commands
  std::string link2giac(const std::string & s,GIAC_CONTEXT);
  // parse %ab to char from html link, e.g. %20 to space
  std::string html_filter(const std::string & s);

  extern const unary_function_ptr * const  at_range ;
  gen _range(const gen & args,GIAC_CONTEXT);

  extern const unary_function_ptr * const  at_find ;
  gen _find(const gen & args,GIAC_CONTEXT);
  extern const unary_function_ptr * const  at_add_autosimplify;
  extern const unary_function_ptr * const  at_python_list;
  extern const unary_function_ptr * const  at_show;
  extern const unary_function_ptr * const  at_diagrammebatons ;
  extern const unary_function_ptr * const  at_pop;
  extern const unary_function_ptr * const  at_coth ;
  extern const unary_function_ptr * const  at_atan2 ;
  vecteur get_pixel_v();
  void adjust_pixels_dim(const vecteur & V,int & I,int &J);
  extern const unary_function_ptr * const  at_get_pixel ;
  extern int screen_w,screen_h;
  gen _set_pixel(const gen & args,GIAC_CONTEXT);
  gen _get_pixel(const gen & args,GIAC_CONTEXT);
  gen _draw_string(const gen & a_,GIAC_CONTEXT);
  extern const unary_function_ptr * const  at_set_pixel ;
  extern const unary_function_ptr * const  at_strip ;
  extern const unary_function_ptr * const  at_lower ;
  extern const unary_function_ptr * const  at_upper ;
  extern const unary_function_ptr * const  at_isinf ;
  extern const unary_function_ptr * const  at_isfinite ;
  extern const unary_function_ptr * const  at_isnan ;
  extern const unary_function_ptr * const  at_fmod ;
  extern const unary_function_ptr * const  at_draw_string ;
  extern const unary_function_ptr * const  at_draw_filled_circle ;
  extern const unary_function_ptr * const  at_draw_filled_arc ;
  extern const unary_function_ptr * const  at_draw_circle ;
  extern const unary_function_ptr * const  at_draw_arc ;
  extern const unary_function_ptr * const  at_draw_line ;
  extern const unary_function_ptr * const  at_draw_polygon ;
  extern const unary_function_ptr * const  at_fill_rect ;
  extern const unary_function_ptr * const  at_draw_rectangle ;
  extern const unary_function_ptr * const  at_dtype ;
  extern const unary_function_ptr * const  at_rgb ;
  extern const unary_function_ptr * const  at_prediction;
  extern const unary_function_ptr * const  at_prediction95;
  extern const unary_function_ptr * const  at_confidence;
  extern const unary_function_ptr * const  at_sin_regression;
  extern const unary_function_ptr * const  at_sin_regression_plot;
  extern const unary_function_ptr * const  at_locate ;
  extern const unary_function_ptr * const  at_ls ;
  extern const unary_function_ptr * const  at_more ;
  extern const unary_function_ptr * const  at_cp ;
  extern const unary_function_ptr * const  at_mkdir ;
  extern const unary_function_ptr * const  at_rm ;
  int rgb888to565(int c);
  int rgb565to888(int c);
#if defined HAVE_UNISTD_H && !defined NUMWORKS
  int cp(const char * sourcename,const char * targetname);
  int rm(const char * filename);
#endif

  gen _show_pixels(const gen & args,GIAC_CONTEXT);
  gen _rgb(const gen & args,GIAC_CONTEXT);
  gen _charpoly(const gen & args,GIAC_CONTEXT);
  extern bool freeze;
  extern "C" void console_freeze();
  extern "C" void sync_screen();
  void draw_rectangle(int x, int y, int width, int height, unsigned short color,GIAC_CONTEXT);
  void draw_polygon(std::vector< std::vector<int> > & v1,int color,GIAC_CONTEXT);
  void draw_filled_polygon(std::vector< std::vector<int> > &L,int xmin,int xmax,int ymin,int ymax,int color,GIAC_CONTEXT);
  void draw_line(int x1, int y1, int x2, int y2, int color,GIAC_CONTEXT);
  void set_pixel(int x,int y,int c,GIAC_CONTEXT);
  extern "C" void set_pixel(int x,int y,int c);
  void draw_circle(int xc,int yc,int r,int color,bool q1,bool q2,bool q3,bool q4,GIAC_CONTEXT);
  void draw_filled_circle(int xc,int yc,int r,int color,bool left,bool right,GIAC_CONTEXT);
  void draw_arc(int xc,int yc,int rx,int ry,int color,double t1, double t2,bool q1,bool q2,bool q3,bool q4,GIAC_CONTEXT);
  void draw_arc(int xc,int yc,int rx,int ry,int color,double theta1, double theta2,GIAC_CONTEXT);
  void draw_filled_arc(int x,int y,int rx,int ry,int theta1_deg,int theta2_deg,int color,int xmin,int xmax,int ymin,int ymax,bool segment,GIAC_CONTEXT);

  std::string fetch(const std::string & url);

  // 4x4 matrix utilities on double, for trig regression
  void Tran4(double * colmat);
  void Mult4(double * colmat,double * vect,double * res);
  void Mult4(double * c,double k,double * res);
  double Det4(double * c);
  void Inv4(double * c,double * res);

#ifndef NO_NAMESPACE_GIAC
} // namespace giac
#endif // NO_NAMESPACE_GIAC

#endif // _GIAC_MISC_H
