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			736 lines
		
	
	
		
			31 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
		
		
			
		
	
	
			736 lines
		
	
	
		
			31 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
|  | //  (C) Copyright John Maddock 2008.
 | ||
|  | //  Use, modification and distribution are subject to the
 | ||
|  | //  Boost Software License, Version 1.0. (See accompanying file
 | ||
|  | //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 | ||
|  | 
 | ||
|  | #ifdef _MSC_VER
 | ||
|  | #  pragma warning (disable : 4127) // conditional expression is constant
 | ||
|  | #  pragma warning (disable : 4180) // qualifier applied to function type has no meaning; ignored
 | ||
|  | #  pragma warning (disable : 4503) // decorated name length exceeded, name was truncated
 | ||
|  | #  pragma warning (disable : 4512) // assignment operator could not be generated
 | ||
|  | #  pragma warning (disable : 4224) // nonstandard extension used : formal parameter 'function_ptr' was previously defined as a type
 | ||
|  | #endif
 | ||
|  | 
 | ||
|  | #include <boost/math/special_functions.hpp>
 | ||
|  | #include <boost/math/tools/roots.hpp>
 | ||
|  | #include <boost/function.hpp>
 | ||
|  | #include <boost/bind.hpp>
 | ||
|  | 
 | ||
|  | #include <list>
 | ||
|  | #include <map>
 | ||
|  | #include <string>
 | ||
|  | #include <boost/svg_plot/svg_2d_plot.hpp>
 | ||
|  | #include <boost/svg_plot/show_2d_settings.hpp>
 | ||
|  | 
 | ||
|  | class function_arity1_plotter | ||
|  | { | ||
|  | public: | ||
|  |    function_arity1_plotter() : m_min_x(0), m_max_x(0), m_min_y(0), m_max_y(0), m_has_legend(false) {} | ||
|  | 
 | ||
|  |    void add(boost::function<double(double)> f, double a, double b, const std::string& name) | ||
|  |    { | ||
|  |       if(name.size()) | ||
|  |          m_has_legend = true; | ||
|  |       //
 | ||
|  |       // Now set our x-axis limits:
 | ||
|  |       //
 | ||
|  |       if(m_max_x == m_min_x) | ||
|  |       { | ||
|  |          m_max_x = b; | ||
|  |          m_min_x = a; | ||
|  |       } | ||
|  |       else | ||
|  |       { | ||
|  |          if(a < m_min_x)  | ||
|  |             m_min_x = a; | ||
|  |          if(b > m_max_x) | ||
|  |             m_max_x = b; | ||
|  |       } | ||
|  |       m_points.push_back(std::pair<std::string, std::map<double,double> >(name, std::map<double,double>())); | ||
|  |       std::map<double,double>& points = m_points.rbegin()->second; | ||
|  |       double interval = (b - a) / 200; | ||
|  |       for(double x = a; x <= b; x += interval) | ||
|  |       { | ||
|  |          //
 | ||
|  |          // Evaluate the function, set the Y axis limits 
 | ||
|  |          // if needed and then store the pair of points:
 | ||
|  |          //
 | ||
|  |          double y = f(x); | ||
|  |          if((m_min_y == m_max_y) && (m_min_y == 0)) | ||
|  |             m_min_y = m_max_y = y; | ||
|  |          if(m_min_y > y) | ||
|  |             m_min_y = y; | ||
|  |          if(m_max_y < y) | ||
|  |             m_max_y = y; | ||
|  |          points[x] = y; | ||
|  |       } | ||
|  |    } | ||
|  | 
 | ||
|  |    void add(const std::map<double, double>& m, const std::string& name) | ||
|  |    { | ||
|  |       if(name.size()) | ||
|  |          m_has_legend = true; | ||
|  |       m_points.push_back(std::pair<std::string, std::map<double,double> >(name, m)); | ||
|  |       std::map<double, double>::const_iterator i = m.begin(); | ||
|  | 
 | ||
|  |       while(i != m.end()) | ||
|  |       { | ||
|  |          if((m_min_x == m_min_y) && (m_min_y == 0)) | ||
|  |          { | ||
|  |             m_min_x = m_max_x = i->first; | ||
|  |          } | ||
|  |          if(i->first < m_min_x) | ||
|  |          { | ||
|  |             m_min_x = i->first; | ||
|  |          } | ||
|  |          if(i->first > m_max_x) | ||
|  |          { | ||
|  |             m_max_x = i->first; | ||
|  |          } | ||
|  | 
 | ||
|  |          if((m_min_y == m_max_y) && (m_min_y == 0)) | ||
|  |          { | ||
|  |             m_min_y = m_max_y = i->second; | ||
|  |          } | ||
|  |          if(i->second < m_min_y) | ||
|  |          { | ||
|  |             m_min_y = i->second; | ||
|  |          } | ||
|  |          if(i->second > m_max_y) | ||
|  |          { | ||
|  |             m_max_y = i->second; | ||
|  |          } | ||
|  | 
 | ||
|  |          ++i; | ||
|  |       } | ||
|  |    } | ||
|  | 
 | ||
|  |    void plot(const std::string& title, const std::string& file, | ||
|  |       const std::string& x_lable = std::string(), | ||
|  |       const std::string& y_lable = std::string()) | ||
|  |    { | ||
|  |       using namespace boost::svg; | ||
|  | 
 | ||
|  |       static const svg_color colors[5] =  | ||
|  |       { | ||
|  |          darkblue, | ||
|  |          darkred, | ||
|  |          darkgreen, | ||
|  |          darkorange, | ||
|  |          chartreuse | ||
|  |       }; | ||
|  | 
 | ||
|  |       svg_2d_plot plot; | ||
|  |       plot.image_x_size(600); | ||
|  |       plot.image_y_size(400); | ||
|  |       plot.copyright_holder("John Maddock").copyright_date("2008").boost_license_on(true); | ||
|  |       plot.coord_precision(4); // Could be 3 for smaller plots?
 | ||
|  |       plot.title(title).title_font_size(20).title_on(true); | ||
|  |       plot.legend_on(m_has_legend); | ||
|  | 
 | ||
|  |       double x_delta = (m_max_x - m_min_x) / 50; | ||
|  |       double y_delta = (m_max_y - m_min_y) / 50; | ||
|  |       plot.x_range(m_min_x, m_max_x + x_delta) | ||
|  |          .y_range(m_min_y, m_max_y + y_delta); | ||
|  |       plot.x_label_on(true).x_label(x_lable); | ||
|  |       plot.y_label_on(true).y_label(y_lable); | ||
|  |       plot.y_major_grid_on(false).x_major_grid_on(false); | ||
|  |       plot.x_num_minor_ticks(3); | ||
|  |       plot.y_num_minor_ticks(3); | ||
|  |       //
 | ||
|  |       // Work out axis tick intervals:
 | ||
|  |       //
 | ||
|  |       double l = std::floor(std::log10((m_max_x - m_min_x) / 10) + 0.5); | ||
|  |       double interval = std::pow(10.0, (int)l); | ||
|  |       if(((m_max_x - m_min_x) / interval) > 10) | ||
|  |          interval *= 5; | ||
|  |       plot.x_major_interval(interval); | ||
|  |       l = std::floor(std::log10((m_max_y - m_min_y) / 10) + 0.5); | ||
|  |       interval = std::pow(10.0, (int)l); | ||
|  |       if(((m_max_y - m_min_y) / interval) > 10) | ||
|  |          interval *= 5; | ||
|  |       plot.y_major_interval(interval); | ||
|  |       plot.plot_window_on(true); | ||
|  |       plot.plot_border_color(lightslategray) | ||
|  |           .background_border_color(lightslategray) | ||
|  |           .legend_border_color(lightslategray) | ||
|  |           .legend_background_color(white); | ||
|  | 
 | ||
|  |       int color_index = 0; | ||
|  | 
 | ||
|  |       for(std::list<std::pair<std::string, std::map<double,double> > >::const_iterator i = m_points.begin(); | ||
|  |          i != m_points.end(); ++i) | ||
|  |       { | ||
|  |          plot.plot(i->second, i->first) | ||
|  |             .line_on(true) | ||
|  |             .line_color(colors[color_index]) | ||
|  |             .line_width(1.) | ||
|  |             .shape(none); | ||
|  |          if(i->first.size()) | ||
|  |             ++color_index; | ||
|  |          color_index = color_index % (sizeof(colors)/sizeof(colors[0])); | ||
|  |       } | ||
|  |       plot.write(file); | ||
|  |    } | ||
|  | 
 | ||
|  |    void clear() | ||
|  |    { | ||
|  |       m_points.clear(); | ||
|  |       m_min_x = m_min_y = m_max_x = m_max_y = 0; | ||
|  |       m_has_legend = false; | ||
|  |    } | ||
|  | 
 | ||
|  | private: | ||
|  |    std::list<std::pair<std::string, std::map<double, double> > > m_points; | ||
|  |    double m_min_x, m_max_x, m_min_y, m_max_y; | ||
|  |    bool m_has_legend; | ||
|  | }; | ||
|  | 
 | ||
|  | template <class F> | ||
|  | struct location_finder | ||
|  | { | ||
|  |    location_finder(F _f, double t, double x0) : f(_f), target(t), x_off(x0){} | ||
|  | 
 | ||
|  |    double operator()(double x) | ||
|  |    { | ||
|  |       try | ||
|  |       { | ||
|  |          return f(x + x_off) - target; | ||
|  |       } | ||
|  |       catch(const std::overflow_error&) | ||
|  |       { | ||
|  |          return boost::math::tools::max_value<double>(); | ||
|  |       } | ||
|  |       catch(const std::domain_error&) | ||
|  |       { | ||
|  |          if(x + x_off == x_off) | ||
|  |             return f(x_off + boost::math::tools::epsilon<double>() * x_off); | ||
|  |          throw; | ||
|  |       } | ||
|  |    } | ||
|  | 
 | ||
|  | private: | ||
|  |    F f; | ||
|  |    double target; | ||
|  |    double x_off; | ||
|  | }; | ||
|  | 
 | ||
|  | template <class F> | ||
|  | double find_end_point(F f, double x0, double target, bool rising, double x_off = 0) | ||
|  | { | ||
|  |    boost::math::tools::eps_tolerance<double> tol(50); | ||
|  |    boost::uintmax_t max_iter = 1000; | ||
|  |    return x_off + boost::math::tools::bracket_and_solve_root( | ||
|  |       location_finder<F>(f, target, x_off),  | ||
|  |       x0,  | ||
|  |       1.5,  | ||
|  |       rising,  | ||
|  |       tol,  | ||
|  |       max_iter).first; | ||
|  | } | ||
|  | 
 | ||
|  | double sqrt1pm1(double x) | ||
|  | { | ||
|  |    return boost::math::sqrt1pm1(x); | ||
|  | } | ||
|  | 
 | ||
|  | double lbeta(double a, double b) | ||
|  | { | ||
|  |    return std::log(boost::math::beta(a, b)); | ||
|  | } | ||
|  | 
 | ||
|  | int main() | ||
|  | { | ||
|  |    function_arity1_plotter plot; | ||
|  |    double (*f)(double); | ||
|  |    double (*f2)(double, double); | ||
|  |    double (*f2u)(unsigned, double); | ||
|  |    double (*f2i)(int, double); | ||
|  |    double (*f3)(double, double, double); | ||
|  |    double (*f4)(double, double, double, double); | ||
|  |    double max_val; | ||
|  | 
 | ||
|  |    f = boost::math::zeta; | ||
|  |    plot.add(f, find_end_point(f, 0.1, 40.0, false, 1.0), 10, ""); | ||
|  |    plot.add(f, -20, find_end_point(f, -0.1, -40.0, false, 1.0), ""); | ||
|  |    plot.plot("Zeta Function Over [-20,10]", "zeta1.svg", "z", "zeta(z)"); | ||
|  | 
 | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -14, 0, ""); | ||
|  |    plot.plot("Zeta Function Over [-14,0]", "zeta2.svg", "z", "zeta(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::tgamma; | ||
|  |    max_val = f(6); | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false), 6, ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true, -1), find_end_point(f, -0.1, -max_val, false), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -2), find_end_point(f, -0.1, max_val, true, -1), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true, -3), find_end_point(f, -0.1, -max_val, false, -2), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -4), find_end_point(f, -0.1, max_val, true, -3), ""); | ||
|  |    plot.plot("tgamma", "tgamma.svg", "z", "tgamma(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::lgamma; | ||
|  |    max_val = f(10); | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false), 10, ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -1), find_end_point(f, -0.1, max_val, true), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -2), find_end_point(f, -0.1, max_val, true, -1), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -3), find_end_point(f, -0.1, max_val, true, -2), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -4), find_end_point(f, -0.1, max_val, true, -3), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -5), find_end_point(f, -0.1, max_val, true, -4), ""); | ||
|  |    plot.plot("lgamma", "lgamma.svg", "z", "lgamma(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::digamma; | ||
|  |    max_val = 10; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true), 10, ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true, -1), find_end_point(f, -0.1, max_val, true), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true, -2), find_end_point(f, -0.1, max_val, true, -1), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true, -3), find_end_point(f, -0.1, max_val, true, -2), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true, -4), find_end_point(f, -0.1, max_val, true, -3), ""); | ||
|  |    plot.plot("digamma", "digamma.svg", "z", "digamma(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::erf; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -3, 3, ""); | ||
|  |    plot.plot("erf", "erf.svg", "z", "erf(z)"); | ||
|  |    f = boost::math::erfc; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -3, 3, ""); | ||
|  |    plot.plot("erfc", "erfc.svg", "z", "erfc(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::erf_inv; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -3, true, -1), find_end_point(f, -0.1, 3, true, 1), ""); | ||
|  |    plot.plot("erf_inv", "erf_inv.svg", "z", "erf_inv(z)"); | ||
|  |    f = boost::math::erfc_inv; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, 3, false), find_end_point(f, -0.1, -3, false, 2), ""); | ||
|  |    plot.plot("erfc_inv", "erfc_inv.svg", "z", "erfc_inv(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::log1p; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -10, true, -1), 10, ""); | ||
|  |    plot.plot("log1p", "log1p.svg", "z", "log1p(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::expm1; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -4, 2, ""); | ||
|  |    plot.plot("expm1", "expm1.svg", "z", "expm1(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::cbrt; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -10, 10, ""); | ||
|  |    plot.plot("cbrt", "cbrt.svg", "z", "cbrt(z)"); | ||
|  | 
 | ||
|  |    f = sqrt1pm1; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -10, true, -1), 5, ""); | ||
|  |    plot.plot("sqrt1pm1", "sqrt1pm1.svg", "z", "sqrt1pm1(z)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::powm1; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0.0001, _1), find_end_point(boost::bind(f2, 0.0001, _1), -1, 10, false), 5, "a=0.0001"); | ||
|  |    plot.add(boost::bind(f2, 0.001, _1), find_end_point(boost::bind(f2, 0.001, _1), -1, 10, false), 5, "a=0.001"); | ||
|  |    plot.add(boost::bind(f2, 0.01, _1), find_end_point(boost::bind(f2, 0.01, _1), -1, 10, false), 5, "a=0.01"); | ||
|  |    plot.add(boost::bind(f2, 0.1, _1), find_end_point(boost::bind(f2, 0.1, _1), -1, 10, false), 5, "a=0.1"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -5, 5, "a=0.75"); | ||
|  |    plot.add(boost::bind(f2, 1.25, _1), -5, 5, "a=1.25"); | ||
|  |    plot.plot("powm1", "powm1.svg", "z", "powm1(a, z)"); | ||
|  | 
 | ||
|  |    f = boost::math::sinc_pi; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -10, 10, ""); | ||
|  |    plot.plot("sinc_pi", "sinc_pi.svg", "z", "sinc_pi(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::sinhc_pi; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -5, 5, ""); | ||
|  |    plot.plot("sinhc_pi", "sinhc_pi.svg", "z", "sinhc_pi(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::acosh; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, 1, 10, ""); | ||
|  |    plot.plot("acosh", "acosh.svg", "z", "acosh(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::asinh; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -10, 10, ""); | ||
|  |    plot.plot("asinh", "asinh.svg", "z", "asinh(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::atanh; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -5, true, -1), find_end_point(f, -0.1, 5, true, 1), ""); | ||
|  |    plot.plot("atanh", "atanh.svg", "z", "atanh(z)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::tgamma_delta_ratio; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, _1, -0.5), 1, 40, "delta = -0.5"); | ||
|  |    plot.add(boost::bind(f2, _1, -0.2), 1, 40, "delta = -0.2"); | ||
|  |    plot.add(boost::bind(f2, _1, -0.1), 1, 40, "delta = -0.1"); | ||
|  |    plot.add(boost::bind(f2, _1, 0.1), 1, 40, "delta = 0.1"); | ||
|  |    plot.add(boost::bind(f2, _1, 0.2), 1, 40, "delta = 0.2"); | ||
|  |    plot.add(boost::bind(f2, _1, 0.5), 1, 40, "delta = 0.5"); | ||
|  |    plot.add(boost::bind(f2, _1, 1.0), 1, 40, "delta = 1.0"); | ||
|  |    plot.plot("tgamma_delta_ratio", "tgamma_delta_ratio.svg", "z", "tgamma_delta_ratio(delta, z)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::gamma_p; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), 0, 20, "a = 0.5"); | ||
|  |    plot.add(boost::bind(f2, 1.0, _1), 0, 20, "a = 1.0"); | ||
|  |    plot.add(boost::bind(f2, 5.0, _1), 0, 20, "a = 5.0"); | ||
|  |    plot.add(boost::bind(f2, 10.0, _1), 0, 20, "a = 10.0"); | ||
|  |    plot.plot("gamma_p", "gamma_p.svg", "z", "gamma_p(a, z)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::gamma_q; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), 0, 20, "a = 0.5"); | ||
|  |    plot.add(boost::bind(f2, 1.0, _1), 0, 20, "a = 1.0"); | ||
|  |    plot.add(boost::bind(f2, 5.0, _1), 0, 20, "a = 5.0"); | ||
|  |    plot.add(boost::bind(f2, 10.0, _1), 0, 20, "a = 10.0"); | ||
|  |    plot.plot("gamma_q", "gamma_q.svg", "z", "gamma_q(a, z)"); | ||
|  | 
 | ||
|  |    f2 = lbeta; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), 0.00001, 5, "a = 0.5"); | ||
|  |    plot.add(boost::bind(f2, 1.0, _1), 0.00001, 5, "a = 1.0"); | ||
|  |    plot.add(boost::bind(f2, 5.0, _1), 0.00001, 5, "a = 5.0"); | ||
|  |    plot.add(boost::bind(f2, 10.0, _1), 0.00001, 5, "a = 10.0"); | ||
|  |    plot.plot("beta", "beta.svg", "z", "log(beta(a, z))"); | ||
|  | 
 | ||
|  |    f = boost::math::expint; | ||
|  |    max_val = f(4); | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, -max_val, true), 4, ""); | ||
|  |    plot.add(f, -3, find_end_point(f, -0.1, -max_val, false), ""); | ||
|  |    plot.plot("Exponential Integral Ei", "expint_i.svg", "z", "expint(z)"); | ||
|  | 
 | ||
|  |    f2u = boost::math::expint; | ||
|  |    max_val = 1; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2u, 1, _1), find_end_point(boost::bind(f2u, 1, _1), 0.1, max_val, false), 2, "n = 1 "); | ||
|  |    plot.add(boost::bind(f2u, 2, _1), find_end_point(boost::bind(f2u, 2, _1), 0.1, max_val, false), 2, "n = 2 "); | ||
|  |    plot.add(boost::bind(f2u, 3, _1), 0, 2, "n = 3 "); | ||
|  |    plot.add(boost::bind(f2u, 4, _1), 0, 2, "n = 4 "); | ||
|  |    plot.plot("Exponential Integral En", "expint2.svg", "z", "expint(n, z)"); | ||
|  | 
 | ||
|  |    f3 = boost::math::ibeta; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f3, 9, 1, _1), 0, 1, "a = 9, b = 1"); | ||
|  |    plot.add(boost::bind(f3, 7, 2, _1), 0, 1, "a = 7, b = 2"); | ||
|  |    plot.add(boost::bind(f3, 5, 5, _1), 0, 1, "a = 5, b = 5"); | ||
|  |    plot.add(boost::bind(f3, 2, 7, _1), 0, 1, "a = 2, b = 7"); | ||
|  |    plot.add(boost::bind(f3, 1, 9, _1), 0, 1, "a = 1, b = 9"); | ||
|  |    plot.plot("ibeta", "ibeta.svg", "z", "ibeta(a, b, z)"); | ||
|  | 
 | ||
|  |    f2i = boost::math::legendre_p; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2i, 1, _1), -1, 1, "l = 1"); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), -1, 1, "l = 2"); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), -1, 1, "l = 3"); | ||
|  |    plot.add(boost::bind(f2i, 4, _1), -1, 1, "l = 4"); | ||
|  |    plot.add(boost::bind(f2i, 5, _1), -1, 1, "l = 5"); | ||
|  |    plot.plot("Legendre Polynomials", "legendre_p.svg", "x", "legendre_p(l, x)"); | ||
|  | 
 | ||
|  |    f2u = boost::math::legendre_q; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2u, 1, _1), -0.95, 0.95, "l = 1"); | ||
|  |    plot.add(boost::bind(f2u, 2, _1), -0.95, 0.95, "l = 2"); | ||
|  |    plot.add(boost::bind(f2u, 3, _1), -0.95, 0.95, "l = 3"); | ||
|  |    plot.add(boost::bind(f2u, 4, _1), -0.95, 0.95, "l = 4"); | ||
|  |    plot.add(boost::bind(f2u, 5, _1), -0.95, 0.95, "l = 5"); | ||
|  |    plot.plot("Legendre Polynomials of the Second Kind", "legendre_q.svg", "x", "legendre_q(l, x)"); | ||
|  | 
 | ||
|  |    f2u = boost::math::laguerre; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2u, 0, _1), -5, 10, "n = 0"); | ||
|  |    plot.add(boost::bind(f2u, 1, _1), -5, 10, "n = 1"); | ||
|  |    plot.add(boost::bind(f2u, 2, _1),  | ||
|  |       find_end_point(boost::bind(f2u, 2, _1), -2, 20, false),  | ||
|  |       find_end_point(boost::bind(f2u, 2, _1), 4, 20, true),  | ||
|  |       "n = 2"); | ||
|  |    plot.add(boost::bind(f2u, 3, _1),  | ||
|  |       find_end_point(boost::bind(f2u, 3, _1), -2, 20, false),  | ||
|  |       find_end_point(boost::bind(f2u, 3, _1), 1, 20, false, 8),  | ||
|  |       "n = 3"); | ||
|  |    plot.add(boost::bind(f2u, 4, _1),  | ||
|  |       find_end_point(boost::bind(f2u, 4, _1), -2, 20, false),  | ||
|  |       find_end_point(boost::bind(f2u, 4, _1), 1, 20, true, 8),  | ||
|  |       "n = 4"); | ||
|  |    plot.add(boost::bind(f2u, 5, _1),  | ||
|  |       find_end_point(boost::bind(f2u, 5, _1), -2, 20, false),  | ||
|  |       find_end_point(boost::bind(f2u, 5, _1), 1, 20, true, 8),  | ||
|  |       "n = 5"); | ||
|  |    plot.plot("Laguerre Polynomials", "laguerre.svg", "x", "laguerre(n, x)"); | ||
|  | 
 | ||
|  |    f2u = boost::math::hermite; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2u, 0, _1), -1.8, 1.8, "n = 0"); | ||
|  |    plot.add(boost::bind(f2u, 1, _1), -1.8, 1.8, "n = 1"); | ||
|  |    plot.add(boost::bind(f2u, 2, _1), -1.8, 1.8, "n = 2"); | ||
|  |    plot.add(boost::bind(f2u, 3, _1), -1.8, 1.8, "n = 3"); | ||
|  |    plot.add(boost::bind(f2u, 4, _1), -1.8, 1.8, "n = 4"); | ||
|  |    plot.plot("Hermite Polynomials", "hermite.svg", "x", "hermite(n, x)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::cyl_bessel_j; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -20, 20, "v = 0"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -20, 20, "v = 1"); | ||
|  |    plot.add(boost::bind(f2, 2, _1), -20, 20, "v = 2"); | ||
|  |    plot.add(boost::bind(f2, 3, _1), -20, 20, "v = 3"); | ||
|  |    plot.add(boost::bind(f2, 4, _1), -20, 20, "v = 4"); | ||
|  |    plot.plot("Bessel J", "cyl_bessel_j.svg", "x", "cyl_bessel_j(v, x)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::cyl_neumann; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), find_end_point(boost::bind(f2, 0, _1), 0.1, -5, true), 20, "v = 0"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), find_end_point(boost::bind(f2, 1, _1), 0.1, -5, true), 20, "v = 1"); | ||
|  |    plot.add(boost::bind(f2, 2, _1), find_end_point(boost::bind(f2, 2, _1), 0.1, -5, true), 20, "v = 2"); | ||
|  |    plot.add(boost::bind(f2, 3, _1), find_end_point(boost::bind(f2, 3, _1), 0.1, -5, true), 20, "v = 3"); | ||
|  |    plot.add(boost::bind(f2, 4, _1), find_end_point(boost::bind(f2, 4, _1), 0.1, -5, true), 20, "v = 4"); | ||
|  |    plot.plot("Bessel Y", "cyl_neumann.svg", "x", "cyl_neumann(v, x)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::cyl_bessel_i; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), find_end_point(boost::bind(f2, 0, _1), -0.1, 20, false), find_end_point(boost::bind(f2, 0, _1), 0.1, 20, true), "v = 0"); | ||
|  |    plot.add(boost::bind(f2, 2, _1), find_end_point(boost::bind(f2, 2, _1), -0.1, 20, false), find_end_point(boost::bind(f2, 2, _1), 0.1, 20, true), "v = 2"); | ||
|  |    plot.add(boost::bind(f2, 5, _1), find_end_point(boost::bind(f2, 5, _1), -0.1, -20, true), find_end_point(boost::bind(f2, 5, _1), 0.1, 20, true), "v = 5"); | ||
|  |    plot.add(boost::bind(f2, 7, _1), find_end_point(boost::bind(f2, 7, _1), -0.1, -20, true), find_end_point(boost::bind(f2, 7, _1), 0.1, 20, true), "v = 7"); | ||
|  |    plot.add(boost::bind(f2, 10, _1), find_end_point(boost::bind(f2, 10, _1), -0.1, 20, false), find_end_point(boost::bind(f2, 10, _1), 0.1, 20, true), "v = 10"); | ||
|  |    plot.plot("Bessel I", "cyl_bessel_i.svg", "x", "cyl_bessel_i(v, x)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::cyl_bessel_k; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), find_end_point(boost::bind(f2, 0, _1), 0.1, 10, false), 10, "v = 0"); | ||
|  |    plot.add(boost::bind(f2, 2, _1), find_end_point(boost::bind(f2, 2, _1), 0.1, 10, false), 10, "v = 2"); | ||
|  |    plot.add(boost::bind(f2, 5, _1), find_end_point(boost::bind(f2, 5, _1), 0.1, 10, false), 10, "v = 5"); | ||
|  |    plot.add(boost::bind(f2, 7, _1), find_end_point(boost::bind(f2, 7, _1), 0.1, 10, false), 10, "v = 7"); | ||
|  |    plot.add(boost::bind(f2, 10, _1), find_end_point(boost::bind(f2, 10, _1), 0.1, 10, false), 10, "v = 10"); | ||
|  |    plot.plot("Bessel K", "cyl_bessel_k.svg", "x", "cyl_bessel_k(v, x)"); | ||
|  | 
 | ||
|  |    f2u = boost::math::sph_bessel; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2u, 0, _1), 0, 20, "v = 0"); | ||
|  |    plot.add(boost::bind(f2u, 2, _1), 0, 20, "v = 2"); | ||
|  |    plot.add(boost::bind(f2u, 5, _1), 0, 20, "v = 5"); | ||
|  |    plot.add(boost::bind(f2u, 7, _1), 0, 20, "v = 7"); | ||
|  |    plot.add(boost::bind(f2u, 10, _1), 0, 20, "v = 10"); | ||
|  |    plot.plot("Bessel j", "sph_bessel.svg", "x", "sph_bessel(v, x)"); | ||
|  | 
 | ||
|  |    f2u = boost::math::sph_neumann; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2u, 0, _1), find_end_point(boost::bind(f2u, 0, _1), 0.1, -5, true), 20, "v = 0"); | ||
|  |    plot.add(boost::bind(f2u, 2, _1), find_end_point(boost::bind(f2u, 2, _1), 0.1, -5, true), 20, "v = 2"); | ||
|  |    plot.add(boost::bind(f2u, 5, _1), find_end_point(boost::bind(f2u, 5, _1), 0.1, -5, true), 20, "v = 5"); | ||
|  |    plot.add(boost::bind(f2u, 7, _1), find_end_point(boost::bind(f2u, 7, _1), 0.1, -5, true), 20, "v = 7"); | ||
|  |    plot.add(boost::bind(f2u, 10, _1), find_end_point(boost::bind(f2u, 10, _1), 0.1, -5, true), 20, "v = 10"); | ||
|  |    plot.plot("Bessel y", "sph_neumann.svg", "x", "sph_neumann(v, x)"); | ||
|  | 
 | ||
|  |    f4 = boost::math::ellint_rj; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f4, _1, _1, _1, _1), find_end_point(boost::bind(f4, _1, _1, _1, _1), 0.1, 10, false), 4, "RJ"); | ||
|  |    f3 = boost::math::ellint_rf; | ||
|  |    plot.add(boost::bind(f3, _1, _1, _1), find_end_point(boost::bind(f3, _1, _1, _1), 0.1, 10, false), 4, "RF"); | ||
|  |    plot.plot("Elliptic Integrals", "ellint_carlson.svg", "x", ""); | ||
|  | 
 | ||
|  |    f2 = boost::math::ellint_1; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, _1, 0.5), -0.9, 0.9, "φ=0.5"); | ||
|  |    plot.add(boost::bind(f2, _1, 0.75), -0.9, 0.9, "φ=0.75"); | ||
|  |    plot.add(boost::bind(f2, _1, 1.25), -0.9, 0.9, "φ=1.25"); | ||
|  |    plot.add(boost::bind(f2, _1, boost::math::constants::pi<double>() / 2), -0.9, 0.9, "φ=π/2"); | ||
|  |    plot.plot("Elliptic Of the First Kind", "ellint_1.svg", "k", "ellint_1(k, phi)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::ellint_2; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, _1, 0.5), -1, 1, "φ=0.5"); | ||
|  |    plot.add(boost::bind(f2, _1, 0.75), -1, 1, "φ=0.75"); | ||
|  |    plot.add(boost::bind(f2, _1, 1.25), -1, 1, "φ=1.25"); | ||
|  |    plot.add(boost::bind(f2, _1, boost::math::constants::pi<double>() / 2), -1, 1, "φ=π/2"); | ||
|  |    plot.plot("Elliptic Of the Second Kind", "ellint_2.svg", "k", "ellint_2(k, phi)"); | ||
|  | 
 | ||
|  |    f3 = boost::math::ellint_3; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f3, _1, 0, 1.25), -1, 1, "n=0 φ=1.25"); | ||
|  |    plot.add(boost::bind(f3, _1, 0.5, 1.25), -1, 1, "n=0.5 φ=1.25"); | ||
|  |    plot.add(boost::bind(f3, _1, 0.25, boost::math::constants::pi<double>() / 2),  | ||
|  |       find_end_point( | ||
|  |          boost::bind(f3, _1, 0.25, boost::math::constants::pi<double>() / 2),  | ||
|  |          0.5, 4, false, -1),  | ||
|  |       find_end_point( | ||
|  |          boost::bind(f3, _1, 0.25, boost::math::constants::pi<double>() / 2),  | ||
|  |          -0.5, 4, true, 1), "n=0.25 φ=π/2"); | ||
|  |    plot.add(boost::bind(f3, _1, 0.75, boost::math::constants::pi<double>() / 2),  | ||
|  |       find_end_point( | ||
|  |          boost::bind(f3, _1, 0.75, boost::math::constants::pi<double>() / 2),  | ||
|  |          0.5, 4, false, -1),  | ||
|  |       find_end_point( | ||
|  |          boost::bind(f3, _1, 0.75, boost::math::constants::pi<double>() / 2),  | ||
|  |          -0.5, 4, true, 1), "n=0.75 φ=π/2"); | ||
|  |    plot.plot("Elliptic Of the Third Kind", "ellint_3.svg", "k", "ellint_3(k, n, phi)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_sn; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -10, 10, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -10, 10, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -10, 10, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -10, 10, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -10, 10, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic sn", "jacobi_sn.svg", "k", "jacobi_sn(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_cn; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -10, 10, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -10, 10, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -10, 10, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -10, 10, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -10, 10, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic cn", "jacobi_cn.svg", "k", "jacobi_cn(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_dn; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -10, 10, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -10, 10, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -10, 10, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -10, 10, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -10, 10, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic dn", "jacobi_dn.svg", "k", "jacobi_dn(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_cd; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -10, 10, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -10, 10, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -10, 10, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -10, 10, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -10, 10, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic cd", "jacobi_cd.svg", "k", "jacobi_cd(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_cs; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), 0.1, 3, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), 0.1, 3, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), 0.1, 3, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), 0.1, 3, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), 0.1, 3, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic cs", "jacobi_cs.svg", "k", "jacobi_cs(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_dc; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -10, 10, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -10, 10, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -10, 10, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -10, 10, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -10, 10, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic dc", "jacobi_dc.svg", "k", "jacobi_dc(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_ds; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), 0.1, 3, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), 0.1, 3, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), 0.1, 3, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), 0.1, 3, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), 0.1, 3, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic ds", "jacobi_ds.svg", "k", "jacobi_ds(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_nc; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -5, 5, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -5, 5, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -5, 5, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -5, 5, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -5, 5, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic nc", "jacobi_nc.svg", "k", "jacobi_nc(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_ns; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), 0.1, 4, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), 0.1, 4, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), 0.1, 4, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), 0.1, 4, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), 0.1, 4, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic ns", "jacobi_ns.svg", "k", "jacobi_ns(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_nd; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -2, 2, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -2, 2, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -2, 2, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -2, 2, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -2, 2, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic nd", "jacobi_nd.svg", "k", "jacobi_nd(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_sc; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -5, 5, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -5, 5, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -5, 5, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -5, 5, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -5, 5, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic sc", "jacobi_sc.svg", "k", "jacobi_sc(k, u)"); | ||
|  | 
 | ||
|  |    f2 = boost::math::jacobi_sd; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2, 0, _1), -2.5, 2.5, "k=0"); | ||
|  |    plot.add(boost::bind(f2, 0.5, _1), -2.5, 2.5, "k=0.5"); | ||
|  |    plot.add(boost::bind(f2, 0.75, _1), -2.5, 2.5, "k=0.75"); | ||
|  |    plot.add(boost::bind(f2, 0.95, _1), -2.5, 2.5, "k=0.95"); | ||
|  |    plot.add(boost::bind(f2, 1, _1), -2.5, 2.5, "k=1"); | ||
|  |    plot.plot("Jacobi Elliptic sd", "jacobi_sd.svg", "k", "jacobi_sd(k, u)"); | ||
|  | 
 | ||
|  |    f = boost::math::airy_ai; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -20, 20, ""); | ||
|  |    plot.plot("Ai", "airy_ai.svg", "z", "airy_ai(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::airy_bi; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -20, 3, ""); | ||
|  |    plot.plot("Bi", "airy_bi.svg", "z", "airy_bi(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::airy_ai_prime; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -20, 20, ""); | ||
|  |    plot.plot("Ai'", "airy_aip.svg", "z", "airy_ai_prime(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::airy_bi_prime; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, -20, 3, ""); | ||
|  |    plot.plot("Bi'", "airy_bip.svg", "z", "airy_bi_prime(z)"); | ||
|  | 
 | ||
|  |    f = boost::math::trigamma; | ||
|  |    max_val = 30; | ||
|  |    plot.clear(); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false), 5, ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -1), find_end_point(f, -0.1, max_val, true), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -2), find_end_point(f, -0.1, max_val, true, -1), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -3), find_end_point(f, -0.1, max_val, true, -2), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -4), find_end_point(f, -0.1, max_val, true, -3), ""); | ||
|  |    plot.add(f, find_end_point(f, 0.1, max_val, false, -5), find_end_point(f, -0.1, max_val, true, -4), ""); | ||
|  |    plot.plot("Trigamma", "trigamma.svg", "x", "trigamma(x)"); | ||
|  | 
 | ||
|  |    f2i = boost::math::polygamma; | ||
|  |    max_val = -50; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true), 5, ""); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true, -1), find_end_point(boost::bind(f2i, 2, _1), -0.1, -max_val, true), ""); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true, -2), find_end_point(boost::bind(f2i, 2, _1), -0.1, -max_val, true, -1), ""); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true, -3), find_end_point(boost::bind(f2i, 2, _1), -0.1, -max_val, true, -2), ""); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true, -4), find_end_point(boost::bind(f2i, 2, _1), -0.1, -max_val, true, -3), ""); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true, -5), find_end_point(boost::bind(f2i, 2, _1), -0.1, -max_val, true, -4), ""); | ||
|  |    plot.add(boost::bind(f2i, 2, _1), find_end_point(boost::bind(f2i, 2, _1), 0.1, max_val, true, -6), find_end_point(boost::bind(f2i, 2, _1), -0.1, -max_val, true, -5), ""); | ||
|  |    plot.plot("Polygamma", "polygamma2.svg", "x", "polygamma(2, x)"); | ||
|  | 
 | ||
|  |    max_val = 800; | ||
|  |    plot.clear(); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false), 5, ""); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false, -1), find_end_point(boost::bind(f2i, 3, _1), -0.1, max_val, true), ""); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false, -2), find_end_point(boost::bind(f2i, 3, _1), -0.1, max_val, true, -1), ""); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false, -3), find_end_point(boost::bind(f2i, 3, _1), -0.1, max_val, true, -2), ""); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false, -4), find_end_point(boost::bind(f2i, 3, _1), -0.1, max_val, true, -3), ""); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false, -5), find_end_point(boost::bind(f2i, 3, _1), -0.1, max_val, true, -4), ""); | ||
|  |    plot.add(boost::bind(f2i, 3, _1), find_end_point(boost::bind(f2i, 3, _1), 0.1, max_val, false, -6), find_end_point(boost::bind(f2i, 3, _1), -0.1, max_val, true, -5), ""); | ||
|  |    plot.plot("Polygamma", "polygamma3.svg", "x", "polygamma(3, x)"); | ||
|  |    return 0; | ||
|  | } | ||
|  | 
 |