--> variables globales embetantes <--
  Toutes les variables relatives au lexer/parser -> on ne peut pas parser en 
  parallele dans des threads
  // gausspol.cc
    bool ingcd=false;
  Relatif a l'affichage pendant le pgcd de polynomes, pas grave
  // identificateur.cc
    bool local_eval;
  Cf. class unary_function_eval, modifs a faire dans l'evaluation pour 
  tenir compte du contexte
  // vecteur.cc
    int printcell_current_row=0,printcell_current_col=0;
    int spread_Row=0,spread_Col=0;
  Relatif a l'evaluation du tableur
  ---> Liste des var globales exceptes unary_function_ptr et const string <---
  // File Eqw.cc
    vector<string> completion_tab;
  // File alg_ext.cc
    rootmap symbolic_rootof_list(ptr_fun(islesscomplex));
  // File derive.cc
  // File desolve.cc
    identificateur laplace_var(" s");
  // File eqw.cc
  // File ezgcd.cc
  // File first.cc
  // File gauss.cc
  // File gausspol.cc
    bool ingcd=false;
    int inspectdim=12;
  // File gen.cc
    bool expand_re_im=true;
    // bool is_inevalf=false;
    //  throw(std::runtime_error("Parse error"));
    int decimal_digits=12;
    gen zero(0);
    gen minus_one(-1);
    gen plus_one(1);
    gen plus_two(2);
    gen plus_three(3);
    gen cst_i(0,1);
    double rad2deg_d(180/M_PI);
    double deg2rad_d(M_PI/180);
    gen rad2deg_g(rad2deg_d);
    gen deg2rad_g(deg2rad_d);
    const vecteur null_vector;
    list<__mpz_struct> zint_list;
  // File global.cc
    bool secure_run=true;
    bool center_history=false;
    bool in_texmacs=false;
    bool block_signal=false;
    int history_begin_level=0; 
    int first_error_line=-1;
    string error_token_name;
    int debug_infolevel=0;
    double epsilon=100*numeric_limits<double>::epsilon();
    double epsilon=1e-10;
    int threads=1;
    bool increasing_power=false;
    string cas_suffixe(".cas");
    int TEST_PROBAB_PRIME=25;
    int GCDHEU_MAXTRY=5;
    int GCDHEU_DEGREE=100;
    int MODFACTOR_PRIMES =5;
    int HENSEL_QUADRATIC_POWER=25;
    int KARAMUL_SIZE=17;
    int INT_KARAMUL_SIZE=300;
    int MAX_ALG_EXT_ORDER_SIZE = 5;
    int TRY_FU_UPRIME=5;
    int SOLVER_MAX_ITERATE=25;
    const int BUFFER_SIZE=16384;
    pid_t parent_id=getpid();
    volatile bool signal_plot_parent=false; 
    volatile bool child_busy=false,data_ready=false;
    volatile bool ctrl_c=false;
    char buf[BUFFER_SIZE];
    bool running_file=false;
    string xcasrc("xcas.rc");
    string xcasrc(".xcasrc");
    bool synchronize_history=true;
  // File help.cc
    multimap<string,string> html_mtt,html_mall;
    std::vector<std::string> html_vtt,html_vall;
    int language=1;
    const int BUFFER_SIZE=16383;
    string subdir_strings[]={"casflan","casgeo","casrouge","cassim","tutoriel"};
    int subdir_taille=5;
  // File identificateur.cc
    bool variables_are_files=false;
    string string_pi("pi");
    identificateur _IDNT_pi(string_pi,(double) M_PI);
    gen cst_pi(_IDNT_pi);
    string string_infinity("infinity");
    identificateur _IDNT_infinity(string_infinity);
    gen unsigned_inf(_IDNT_infinity);
    gen cst_two_pi(symbolic(at_prod,makevecteur(2,cst_pi)));
    gen cst_pi_over_2(_FRAC2_SYMB(cst_pi,2));
    gen plus_inf(symbolic(at_plus,_IDNT_infinity));
    gen minus_inf(symbolic(at_neg,_IDNT_infinity));
    string string_undef("undef");
    identificateur _IDNT_undef(string_undef);
    gen undef(_IDNT_undef);
    identificateur a__IDNT("a");
    gen a__IDNT_e(a__IDNT);
    identificateur b__IDNT("b");
    gen b__IDNT_e(b__IDNT);
    identificateur c__IDNT("c");
    gen c__IDNT_e(c__IDNT);
    identificateur d__IDNT("d");
    gen d__IDNT_e(d__IDNT);
    identificateur e__IDNT("e",(double) M_E);
    gen e__IDNT_e(e__IDNT);
    identificateur e__IDNT_("maple_e");
    gen e__IDNT_e_(e__IDNT_);
    identificateur f__IDNT("f");
    gen f__IDNT_e(f__IDNT);
    identificateur g__IDNT("g");
    gen g__IDNT_e(g__IDNT);
    identificateur h__IDNT("h");
    gen h__IDNT_e(h__IDNT);
    identificateur i__IDNT("i");
    gen i__IDNT_e(i__IDNT);
    identificateur I__IDNT("I");
    gen I__IDNT_e(I__IDNT);
    identificateur j__IDNT("j");
    gen j__IDNT_e(j__IDNT);
    identificateur k__IDNT("k");
    gen k__IDNT_e(k__IDNT);
    identificateur l__IDNT("l");
    gen l__IDNT_e(l__IDNT);
    identificateur m__IDNT("m");
    gen m__IDNT_e(m__IDNT);
    identificateur n__IDNT("n");
    gen n__IDNT_e(n__IDNT);
    identificateur o__IDNT("o");
    gen o__IDNT_e(o__IDNT);
    identificateur p__IDNT("p");
    gen p__IDNT_e(p__IDNT);
    identificateur q__IDNT("q");
    gen q__IDNT_e(q__IDNT);
    identificateur r__IDNT("r");
    gen r__IDNT_e(r__IDNT);
    identificateur s__IDNT("s");
    gen s__IDNT_e(s__IDNT);
    identificateur t__IDNT("t");
    gen t__IDNT_e(t__IDNT);
    identificateur u__IDNT("u");
    gen u__IDNT_e(u__IDNT);
    identificateur v__IDNT("v");
    gen v__IDNT_e(v__IDNT);
    identificateur w__IDNT("w");
    gen w__IDNT_e(w__IDNT);
    identificateur x__IDNT("x");
    gen x__IDNT_e(x__IDNT);
    gen vx_var(x__IDNT_e);
    identificateur y__IDNT("y");
    gen y__IDNT_e(y__IDNT);
    identificateur z__IDNT("z");
    gen z__IDNT_e(z__IDNT);
    identificateur CST__IDNT("CST");
    gen CST__IDNT_e(CST__IDNT);
    identificateur PICT__IDNT("PICT");
    gen PICT__IDNT_e(PICT__IDNT);
    gen tab_one_char__IDNT[]={a__IDNT_e,b__IDNT_e,c__IDNT_e,d__IDNT_e,e__IDNT_e,f__IDNT_e,g__IDNT_e,h__IDNT_e,i__IDNT_e,I__IDNT_e,j__IDNT_e,k__IDNT_e,l__IDNT_e,m__IDNT_e,n__IDNT_e,o__IDNT_e,p__IDNT_e,q__IDNT_e,r__IDNT_e,s__IDNT_e,t__IDNT_e,u__IDNT_e,v__IDNT_e,w__IDNT_e,x__IDNT_e,y__IDNT_e,z__IDNT_e,CST__IDNT_e,PICT__IDNT_e,zero};
    vecteur list_one_letter__IDNT(tab2vecteur(tab_one_char__IDNT));
    string string_break("break");
    identificateur _IDNT_break(string_break);
    string string_continue("continue");
    identificateur _IDNT_continue(string_continue);
    bool local_eval=true;
  // File ifactor.cc
  // File index.cc
  // File intg.cc
    bool do_lnabs=true;
    extern unary_function_ptr primitive_tab_op[];
    extern unary_function_ptr inverse_tab_op[];
    gen_op primitive_tab_primitive[]={giac::int_sin,giac::int_cos,giac::int_tan,giac::exp,giac::cosh,giac::sinh,giac::int_tanh,giac::int_asin,giac::int_acos,giac::int_atan,giac::xln_x};
  // File isom.cc
  // File lin.cc
  // File maple.cc
    extern unary_function_ptr at_count;
  // File mathml.cc
    using namespace giac;
    double horiz_mathml=12.;
    double vert_mathml=12.;
    string mathml_preamble("<?xml version=\"1.0\" encoding=\"iso-8859-1\"?>\n<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN\"\n\"http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd\" [\n<!ENTITY mathml \"http://www.w3.org/1998/Math/MathML\">\n]>\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<body>\n");
    string mathml_end("\n</body>\n</html>");
    string math_begin("<math mode=\"display\" xmlns=\"http://www.w3.org/1998/Math/MathML\">\n");
    string math_end("</math>");
    string provisoire_mbox_begin("<mi>");
    string provisoire_mbox_end("</mi>");
    //   return "\\overline{"+gen2tex(g)+"}";
  // File misc.cc
  // File modfactor.cc
  // File modpoly.cc
    int debuglevel=0;
    clock_t debut_time,fin_time;
  // File moyal.cc
  // File pari.cc
    long pari_maxprime=100000;
  // File permu.cc
  // File plot.cc
    int LEGENDE_SIZE=36;
    int COORD_SIZE=26;
    int PARAM_STEP=18;
    int LEGENDE_SIZE=44;
    int COORD_SIZE=30;
    int PARAM_STEP=20;
    vecteur plot_instructions,graph_instructions;
    int plot_instructionsh=300,plot_instructionsw=300;
    bool shift_on=false;
    bool run_modif=false;
    bool win9x=false;
    int run_modif_pos;
    pid_t gnuplot_pid=0;
    string gnuplot_name(giac_gnuplot_location);
    int gnuplot_fileno=0;
    int gnuplot_pipe[2];
    string gnuplot_filename("graph3d");
    int _GROUP__VECT_subtype[]={_GROUP__VECT,_LINE__VECT,_VECTOR__VECT,0};
    double gnuplot_xmin=-4,gnuplot_xmax=4,gnuplot_ymin=-5,gnuplot_ymax=2,gnuplot_zmin=-10,gnuplot_zmax=10,gnuplot_tmin=-1,gnuplot_tmax=6,gnuplot_tstep=0.07;
    double gnuplot_xmin=-5,gnuplot_xmax=5,gnuplot_ymin=-5,gnuplot_ymax=2,gnuplot_zmin=-10,gnuplot_zmax=10,gnuplot_tmin=-1,gnuplot_tmax=6,gnuplot_tstep=0.07;
    double window_xmin(gnuplot_xmin),window_xmax(gnuplot_xmax),window_ymin(-2),window_ymax(gnuplot_ymax);
    double x_tick(1.0),y_tick(1.0);
    double class_minimum(0.0),class_size(1.0);
    int gnuplot_pixels_per_eval=2;
    bool autoscale=true;
    bool show_axes=true;
    bool has_gnuplot=true;
    bool as_function_of_mode=false;
    bool redraw_mouse_position_only=false;
    bool fastcurveprint=false;
    string PICTautoname("A");
  // File prog.cc
    modules_tab giac_modules_tab;
    int indent_spaces=0;
    bool complex_mode=false,angle_radian=true,complex_variables=false,approx_mode=false;
    vecteur args_stack;
    bool debug_mode=false;
    bool debug_allowed=true;
    vector<int> current_instruction_stack;
    int current_instruction;
    vector< vector<int> > sst_at_stack;
    vector<int> sst_at;
    gen debug_info,fast_debug_info;
    bool debug_refresh=false;
    gen sorting_function;
    bool user_screen=false;
    int user_screen_io_x=0,user_screen_io_y=0;
    int user_screen_fontsize=14;
    gen current_folder_name;
  // File quater.cc
  // File rpn.cc
    vecteur history_in,history_out;
    bool rpn_mode=false;
  // File series.cc
    bool inside_limit=false;
    vecteur sincosinf; 
    gen default_ordre=20;
  // File solve.cc
    int NEWTON_DEFAULT_ITERATION=20;
    int intvar_counter=0;
    int realvar_counter=0;
    gen (* isolate_fcns[] ) (const gen &,int) = { isolate_exp,isolate_ln,isolate_sin,isolate_cos,isolate_tan,isolate_asin,isolate_acos,isolate_atan};
  // File subst.cc
    bool quote_subst=false;
  // File sym2poly.cc
  // File symbolic.cc
    string last_evaled_function_name;
  // File tex.cc
    double horiz_latex=12.;
    double vert_latex=12.;
    string tex_preamble("\\documentclass{article} \n \\usepackage{pstricks} \n \\begin{document} \n");
    string tex_end("\n\\end{document}");
    string mbox_begin("\\mbox{");
    string mbox_end("}");
  // File ti89.cc
    vecteur zoom_save;
  // File unary.cc
  // File usual.cc
    string messages_to_print ;
    bool signal_store=true;
    vector<unary_function_ptr > solve_fcns_v(solve_fcns,solve_fcns+8);
    gen cst_two_pi(symbolic(at_prod,makevecteur(2,cst_pi)));
    gen cst_pi_over_2(_FRAC2_SYMB(cst_pi,2));
    gen plus_inf(symbolic(at_plus,_IDNT_infinity));
    gen minus_inf(symbolic(at_neg,_IDNT_infinity));
    gen plus_one_half(fraction(1,2));
    gen minus_one_half(-symb_inv(2));
    gen plus_sqrt3(sqrt(3));
    gen plus_sqrt2(sqrt(2));
    gen minus_sqrt3_2(-_FRAC2_SYMB(plus_sqrt3,2));
    gen minus_sqrt2_2(-_FRAC2_SYMB(plus_sqrt2,2));
    gen minus_sqrt3_3(-_FRAC2_SYMB(plus_sqrt3,3));
    gen minus_sqrt3(-plus_sqrt3);
    gen minus_sqrt2(-plus_sqrt2);
    gen plus_sqrt3_2(_FRAC2_SYMB(plus_sqrt3,2));
    gen plus_sqrt2_2(_FRAC2_SYMB(plus_sqrt2,2));
    gen plus_sqrt3_3(_FRAC2_SYMB(plus_sqrt3,3));
    gen rad2deg_e(_FRAC2_SYMB(180,cst_pi));
    gen deg2rad_e(_FRAC2_SYMB(cst_pi,180));
    vector<unary_function_ptr> sincostan_v(sincostan_tab,sincostan_tab+3);
    vector<unary_function_ptr> asinacosatan_v(asinacosatan_tab,asinacosatan_tab+3);
    vector<unary_function_ptr> sinhcoshtanh_v(sinhcoshtanh_tab,sinhcoshtanh_tab+3);
    vector <unary_function_ptr> sincostansinhcoshtanh_v(merge(sincostan_v,sinhcoshtanh_v));
    vector<unary_function_ptr> exp_v(1,at_exp);
    vector<unary_function_ptr> tan_v(1,at_tan);
    vector<unary_function_ptr> asin_v(1,at_asin);
    vector<unary_function_ptr> acos_v(1,at_acos);
    vector<unary_function_ptr> atan_v(1,at_atan);
    vector<unary_function_ptr> pow_v(1,at_pow);
    gen_op halftan_tab[]={sin2tan2,cos2tan2,tan2tan2};
    gen_op hyp2exp_tab[]={sinh2exp,cosh2exp,tanh2exp};
    gen_op trig2exp_tab[]={sin2exp,cos2exp,tan2exp};
    gen_op atrig2ln_tab[]={asin2ln,acos2ln,atan2ln};
    vector< gen_op > halftan_v(halftan_tab,halftan_tab+3);
    vector< gen_op > hyp2exp_v(hyp2exp_tab,hyp2exp_tab+3);
    vector< gen_op > trig2exp_v(trig2exp_tab,trig2exp_tab+3);
    vector< gen_op > halftan_hyp2exp_v(merge(halftan_v,hyp2exp_v));
    vector< gen_op > exp2sincos_v(1,exp2sincos);
    vector< gen_op > tan2sincos_v(1,tantosincos);
    vector< gen_op > tan2sincos2_v(1,tantosincos2);
    vector< gen_op > tan2cossin2_v(1,tantocossin2);
    vector< gen_op > asin2acos_v(1,asintoacos);
    vector< gen_op > asin2atan_v(1,asintoatan);
    vector< gen_op > acos2asin_v(1,acostoasin);
    vector< gen_op > acos2atan_v(1,acostoatan);
    vector< gen_op > atan2asin_v(1,atantoasin);
    vector< gen_op > atan2acos_v(1,atantoacos);
    vector< gen_op > atrig2ln_v(atrig2ln_tab,atrig2ln_tab+3);
    vector< gen_op > trigcos_v(1,trigcospow);
    vector< gen_op > trigsin_v(1,trigsinpow);
    vector< gen_op > trigtan_v(1,trigtanpow);
    vector< gen_op > powexpand_v(1,powtopowexpand);
    vector< gen_op > exp2power_v(1,exptopower);
    vector< unary_function_ptr > gamma_v(1,at_gamma);
    vector< gen_op > gamma2factorial_v(1,gammatofactorial);
    vector<unary_function_ptr> inequality_sommets(inequality_tab,inequality_tab+sizeof(inequality_tab)/sizeof(unary_function_ptr));
  // File vecteur.cc
    int printcell_current_row=0,printcell_current_col=0;
    int spread_Row=0,spread_Col=0;