sampler.h

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#ifndef SAMPLER_H 
#define SAMPLER_H 


#include <config.h>

#include <stdlib.h>
#include <stdio.h>
#include <inttypes.h>
#include <math.h>

#include <jwsc/base/error.h>
#include <jwsc/base/limits.h>
#include <jwsc/vector/vector.h>
#include <jwsc/prob/pdf.h>

#include "potential.h"
#include "sampler.h"


#ifdef __cplusplus
namespace jwsc {
extern "C" {
#endif


Error* metropolis_hastings
(
    uint32_t iterations,
    double   start_x,
    double   start_y,
    double   x_sigma,
    double   x_min,
    double   x_max,
    double   y_sigma,
    double   y_min,
    double   y_max
);


typedef struct
{
    double x;
    double y;
}
Params;


void   get_pt_from_params(Vector_d** p_out, const void* params);
Error* set_params_from_pt(const Vector_d* p, void* params);
Error* energy_func(double* energy_out, void* params);
Error* grad_energy_func(Vector_d** grad_out, void* params);
Error* langevin_accept_sample(const Vector_d* sample, void* params);
Error* hyper_accept_sample(const Vector_d* sample, void* params, double Vb);
Error* stochastic_dynamics_accept_sample(const Vector_d* sample, const Vector_d* momenta, void* params);
Error* hybrid_mc_accept_sample(const Vector_d* sample, const Vector_d* momenta, void* params);


#ifdef __cplusplus
}
}
#endif


#endif